Arch Linux

amadeuspaulussen

Member

Registered: 2025-09-14

Posts: 16

Website

[SOLVED] mt7921e Wi-Fi fails to initialize on kernel 6.16.7-arch1-1

Hello everyone

The Mediatek mt7921e Wi-Fi adapter in my AMD Z16 ThinkPad Gen1 fails to initialize on Arch Linux since I updated yesterday.

I am aware of the linux-firmware intervention situation and I did uninstall and reinstall linux-firmware in the hopes that this would solve my problem. Unfortunately, it didn't.

From all I have learned while researching this issue, I think the problem is quite simple: The driver loads, but the firmware doesn't because it is not available at `/lib/firmware/mediatek/`. I am not very experienced and might be wrong about that though.

Steps to Reproduce:

1. Boot with kernel 6.16.7-arch1-1.
2. Observe `dmesg | grep mt7921e`:

[    6.581954] mt7921e 0000:01:00.0: enabling device (0000 -> 0002)
[    6.587524] mt7921e 0000:01:00.0: ASIC revision: 79220010
[    6.663422] mt7921e 0000:01:00.0: HW/SW Version: 0x8a108a10, Build Time: 20250903123148a
[    7.032951] mt7921e 0000:01:00.0: WM Firmware Version: ____000000, Build Time: 20250903123243

Expected Behavior:
The mt7921e Wi-Fi adapter would load its firmware successfully and initialize, allowing network connectivity.

System Information:

- Kernel version: Linux 6.16.7-arch1-1
- DE: GNOME 48.5

Full system information can be accessed here: https://nextcloud.paulussen.id/index.ph … M3ZXo9qLLS

Additional Notes:

- `sudo modprobe -r mt7921e` stalls.
- `sudo modprobe mt7921e` completes without any effect.
- When shutting down the computer or trying to reboot, it hangs at `Failed to send WATCHDOG=1 notification message: Connection refused`.

`lspci -k | grep -iA3 network` returns:

01:00.0 Network controller: MEDIATEK Corp. MT7922 802.11ax PCI Express Wireless Network Adapter
	Subsystem: Lenovo Device e0c7
	Kernel driver in use: mt7921e
	Kernel modules: mt7921e

Should I try to find the missing firmware somewhere and put it in `/lib/firmware/mediatek/`, or what would be the best way to deal with this?

Update:
The problem was temporarily solved by downgrading the package with "sudo pacman -U https://archive.archlinux.org/packages/l/linux-firmware-mediatek/linux-firmware-mediatek-20250808-1-any.pkg.tar.zst" and adding "IgnorePkg = linux-firmware-mediatek" to "/etc/pacman.conf".

Last edited by amadeuspaulussen (2025-09-24 11:02:04)

Xephon

Member

Registered: 2024-12-22

Posts: 188

Re: [SOLVED] mt7921e Wi-Fi fails to initialize on kernel 6.16.7-arch1-1

Upstream issue
https://gitlab.archlinux.org/archlinux/ … /issues/29

You can use a downgrade as a temporary solution

sudo pacman -U https://archive.archlinux.org/packages/l/linux-firmware-mediatek/linux-firmware-mediatek-20250808-1-any.pkg.tar.zst

loqs

Member

Registered: 2014-03-06

Posts: 18,630

Re: [SOLVED] mt7921e Wi-Fi fails to initialize on kernel 6.16.7-arch1-1

Upstream issue
https://gitlab.archlinux.org/archlinux/ … /issues/29

Arch's gitlab is not upstream.  Which is why reporting it there will not solve it. https://gitlab.archlinux.org/archlinux/ … ote_322658.  Sadly multiple mediatek users would rather downgrade than report the issue upstream https://bbs.archlinux.org/viewtopic.php?id=305019.

Xephon

Member

Registered: 2024-12-22

Posts: 188

Re: [SOLVED] mt7921e Wi-Fi fails to initialize on kernel 6.16.7-arch1-1

Arch's gitlab is not upstream

I never said it was. I just provided a link containing a clarification about it being an upstream issue.

amadeuspaulussen

Member

Registered: 2025-09-14

Posts: 16

Website

Re: [SOLVED] mt7921e Wi-Fi fails to initialize on kernel 6.16.7-arch1-1

Upstream issue
https://gitlab.archlinux.org/archlinux/ … /issues/29

You can use a downgrade as a temporary solution

sudo pacman -U https://archive.archlinux.org/packages/l/linux-firmware-mediatek/linux-firmware-mediatek-20250808-1-any.pkg.tar.zst

I'm relieved to know what the issue is, and I'm grateful for your help! /\

Unfortunately, I must admit that I'm not very experienced with Linux yet.

What would be the procedure for reporting this issue upstream?

I report bugs regularly, and I think I know how to write a decent bug report.

I would be happy to help if you could guide me.

Xephon

Member

Registered: 2024-12-22

Posts: 188

Re: [SOLVED] mt7921e Wi-Fi fails to initialize on kernel 6.16.7-arch1-1

What would be the procedure for reporting this issue upstream?

According to https://gitlab.com/kernel-firmware/linu … quests/684 you need to send a report to the linux-mediatek mailing list linux-mediatek@lists.infradead.org

Last edited by Xephon (2025-09-20 08:18:50)

amadeuspaulussen

Member

Registered: 2025-09-14

Posts: 16

Website

Re: [SOLVED] mt7921e Wi-Fi fails to initialize on kernel 6.16.7-arch1-1

Thank you!

It looks like someone already notified the mailing list, see:
http://lists.infradead.org/pipermail/li … 98830.html

amadeuspaulussen

Member

Registered: 2025-09-14

Posts: 16

Website

Re: [SOLVED] mt7921e Wi-Fi fails to initialize on kernel 6.16.7-arch1-1

I downgraded and everything is back to normal. Should I add solved to the title of the thread or wait until it is really solved and not only temporarily?

Xephon

Member

Registered: 2024-12-22

Posts: 188

Re: [SOLVED] mt7921e Wi-Fi fails to initialize on kernel 6.16.7-arch1-1

There are no clear guidelines on whether to consider workarounds as solutions or not. It's up to you, I guess.

loqs

Member

Registered: 2014-03-06

Posts: 18,630

Re: [SOLVED] mt7921e Wi-Fi fails to initialize on kernel 6.16.7-arch1-1

Can you reproduce the issue if you revert ba41835  linux-firmware: update firmware for MT7922 WiFi device ?
diff of changes to current linux-firmware PKGBUILD:

@@ -51,6 +51,8 @@ _backports=(
 )
 
 _reverts=(
+  # https://gitlab.archlinux.org/archlinux/packaging/packages/linux-firmware/-/issues/29
+  ba41835c21ebbbba92fce71d30f747490313eaf6
 )
 
 prepare() {

Or prebuilt with pkgrel incremented to 1.1 linux-firmware-mediatek-20250917-1.1-any.pkg.tar.zst.

jimangel2001

Member

Registered: 2022-10-28

Posts: 14

Re: [SOLVED] mt7921e Wi-Fi fails to initialize on kernel 6.16.7-arch1-1

On my setup downgrading doesn't solve the problem.

Also, on 20250917-1.1 as loqs suggested I get timeouts.

sudo dmesg | grep -i mt79
[    6.763645] mt7921e 0000:62:00.0: enabling device (0000 -> 0002)
[    6.768345] mt7921e 0000:62:00.0: ASIC revision: 79220010
[    6.842371] mt7921e 0000:62:00.0: HW/SW Version: 0x8a108a10, Build Time: 20250903123148a
[    7.219593] mt7921e 0000:62:00.0: WM Firmware Version: ____000000, Build Time: 20250903123243
[   10.723613] mt7921e 0000:62:00.0: Message 0004005c (seq 13) timeout
[   10.791773] mt7921e 0000:62:00.0: HW/SW Version: 0x8a108a10, Build Time: 20250903123148a
[   10.806764] mt7921e 0000:62:00.0: WM Firmware Version: ____000000, Build Time: 20250903123243
[   46.116343] Modules linked in: rndis_host cdc_ether usbnet mii snd_seq_dummy snd_hrtimer snd_seq snd_seq_device bridge stp llc snd_acp70 snd_acp_i2s snd_acp_pdm snd_acp_pcm snd_sof_amd_acp70 snd_sof_amd_acp63 snd_sof_amd_vangogh snd_sof_amd_rembrandt snd_sof_amd_renoir snd_sof_amd_acp snd_sof_pci snd_sof_xtensa_dsp snd_sof snd_sof_utils snd_pci_ps intel_rapl_msr amd_atl snd_soc_acpi_amd_match mt7921e intel_rapl_common snd_amd_sdw_acpi soundwire_amd mt7921_common soundwire_generic_allocation mt792x_lib soundwire_bus snd_hda_codec_realtek mt76_connac_lib snd_soc_sdca mt76 snd_hda_codec_generic snd_soc_core snd_hda_scodec_component snd_hda_codec_hdmi snd_compress ac97_bus mac80211 snd_hda_intel snd_pcm_dmaengine snd_intel_dspcfg kvm_amd snd_rpl_pci_acp6x snd_intel_sdw_acpi snd_acp_pci snd_hda_codec libarc4 uvcvideo snd_amd_acpi_mach kvm snd_hda_core snd_acp_legacy_common videobuf2_vmalloc snd_hwdep snd_pci_acp6x snd_ctl_led irqbypass uvc snd_pcm videobuf2_memops polyval_clmulni ucsi_acpi cfg80211 snd_pci_acp5x btusb

and I also get 100% on a single core.

Last edited by jimangel2001 (2025-09-20 19:50:02)

loqs

Member

Registered: 2014-03-06

Posts: 18,630

Re: [SOLVED] mt7921e Wi-Fi fails to initialize on kernel 6.16.7-arch1-1

On my setup downgrading doesn't solve the problem.

and I also get 100% on a single core.

Which would indicate a different issue.

seth

Member

From: Don't DM me only for attention

Registered: 2012-09-03

Posts: 69,144

Re: [SOLVED] mt7921e Wi-Fi fails to initialize on kernel 6.16.7-arch1-1

[   46.116343] Modules linked in: rndis_host cdc_ether usbnet …

and some ooops or warning or …
If downgrading doesn't help, did upgrading actually cause this? Did you only downgrade the kernel, the firmware, both or did you completely roll back the update?

---

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amadeuspaulussen

Member

Registered: 2025-09-14

Posts: 16

Website

Re: [SOLVED] mt7921e Wi-Fi fails to initialize on kernel 6.16.7-arch1-1

Can you reproduce the issue if you revert ba41835  linux-firmware: update firmware for MT7922 WiFi device ?
diff of changes to current linux-firmware PKGBUILD:

@@ -51,6 +51,8 @@ _backports=(
 )
 
 _reverts=(
+  # https://gitlab.archlinux.org/archlinux/packaging/packages/linux-firmware/-/issues/29
+  ba41835c21ebbbba92fce71d30f747490313eaf6
 )
 
 prepare() {

Or prebuilt with pkgrel incremented to 1.1 linux-firmware-mediatek-20250917-1.1-any.pkg.tar.zst.

I'm a little overwhelmed with this to be honest. I guess I am still a Linux novice. But if you can help me with instructions on how to answer your question, I'm happy to try.

amadeuspaulussen

Member

Registered: 2025-09-14

Posts: 16

Website

Re: [SOLVED] mt7921e Wi-Fi fails to initialize on kernel 6.16.7-arch1-1

There are no clear guidelines on whether to consider workarounds as solutions or not. It's up to you, I guess.

My gut tells me not to mark it as solved just yet. Not until a patch for this has been issued. If I understand correctly, that is not yet the case.

seth

Member

From: Don't DM me only for attention

Registered: 2012-09-03

Posts: 69,144

Re: [SOLVED] mt7921e Wi-Fi fails to initialize on kernel 6.16.7-arch1-1

loqs is asking your to install the patched firmware, either by doing it manually or by downloading the linked package and running "pacman -U linux-firmware…" to install it.
If that firmware package works, you can probably mark this thread as solved since your immediate problem is gone and the general one is addressed elsewhere.

---

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amadeuspaulussen

Member

Registered: 2025-09-14

Posts: 16

Website

Re: [SOLVED] mt7921e Wi-Fi fails to initialize on kernel 6.16.7-arch1-1

loqs is asking your to install the patched firmware, either by doing it manually or by downloading the linked package and running "pacman -U linux-firmware…" to install it.
If that firmware package works, you can probably mark this thread as solved since your immediate problem is gone and the general one is addressed elsewhere.

Ok, I see. Thanks for explaining. And that would not be the same version as I already installed with the downgrade `sudo pacman -U https://archive.archlinux.org/packages/l/linux-firmware-mediatek/linux-firmware-mediatek-20250808-1-any.pkg.tar.zst`, right?

Last edited by amadeuspaulussen (2025-09-21 09:43:11)

seth

Member

From: Don't DM me only for attention

Registered: 2012-09-03

Posts: 69,144

Re: [SOLVED] mt7921e Wi-Fi fails to initialize on kernel 6.16.7-arch1-1

No, not the same. loqs' package is to confirm the suggested patch (in doubt that this is indeed the relevant firmware binary in your case)

---

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amadeuspaulussen

Member

Registered: 2025-09-14

Posts: 16

Website

Re: [SOLVED] mt7921e Wi-Fi fails to initialize on kernel 6.16.7-arch1-1

Can you reproduce the issue if you revert ba41835  linux-firmware: update firmware for MT7922 WiFi device ?
diff of changes to current linux-firmware PKGBUILD:

@@ -51,6 +51,8 @@ _backports=(
 )
 
 _reverts=(
+  # https://gitlab.archlinux.org/archlinux/packaging/packages/linux-firmware/-/issues/29
+  ba41835c21ebbbba92fce71d30f747490313eaf6
 )
 
 prepare() {

Or prebuilt with pkgrel incremented to 1.1 linux-firmware-mediatek-20250917-1.1-any.pkg.tar.zst.

I downloaded the file and installed it with `sudo pacman -U linux-firmware-mediatek-20250917-1.1-any.pkg.tar.zst` and rebooted my system with linux and linux-lts and in both cases the Wi-Fi adapter seems to work without any problems.

busterbie

Member

Registered: 2025-09-21

Posts: 1

Re: [SOLVED] mt7921e Wi-Fi fails to initialize on kernel 6.16.7-arch1-1

Also installed the patched module from @loqs, and my wifi now works seeminly without problems after rebooting.

jimangel2001

Member

Registered: 2022-10-28

Posts: 14

Re: [SOLVED] mt7921e Wi-Fi fails to initialize on kernel 6.16.7-arch1-1

I am sorry if this is not the appropriate thread or if I am spamming. After updating I can't seem to make my adapter work, even when downgrading. Here are some logs from various configs.

linux-firmware-mediatek: 20250708-1
6.16.7-arch1-1

Sep 21 10:31:13 mitsos-laptop kernel: ------------[ cut here ]------------
Sep 21 10:31:13 mitsos-laptop kernel: workqueue: cannot queue ucsi_poll_worker [typec_ucsi] on wq USBC000:00-con1
Sep 21 10:31:13 mitsos-laptop kernel: WARNING: CPU: 13 PID: 1089 at kernel/workqueue.c:2257 __queue_work+0x428/0x430
Sep 21 10:31:13 mitsos-laptop kernel: Modules linked in: snd_seq_dummy snd_hrtimer snd_seq snd_seq_device bridge stp llc snd_acp70 snd_acp_i2s snd_acp_pdm snd>
Sep 21 10:31:13 mitsos-laptop kernel:  snd_timer btintel ghash_clmulni_intel amd_pmf snd_pci_acp5x typec videodev sp5100_tco snd_rn_pci_acp3x asus_nb_wmi sha5>
Sep 21 10:31:13 mitsos-laptop kernel: CPU: 13 UID: 0 PID: 1089 Comm: kworker/13:2 Not tainted 6.16.7-arch1-1 #1 PREEMPT(full)  ca97e8d991f25900a7e86eaefaa601b>
Sep 21 10:31:13 mitsos-laptop kernel: Hardware name: ASUSTeK COMPUTER INC. ASUS Vivobook S 16 M5606WA_M5606WA/M5606WA, BIOS M5606WA.314 04/17/2025
Sep 21 10:31:13 mitsos-laptop kernel: Workqueue: events mt7921_init_work [mt7921_common]
Sep 21 10:31:13 mitsos-laptop kernel: RIP: 0010:__queue_work+0x428/0x430
Sep 21 10:31:13 mitsos-laptop kernel: Code: ee 70 fd ff 0f 0b e9 a8 fc ff ff 48 8b 73 18 49 8d 94 24 c0 00 00 00 48 c7 c7 e8 65 fb a3 c6 05 79 b7 50 02 01 e8 >
Sep 21 10:31:13 mitsos-laptop kernel: RSP: 0018:ffffd2da00544d98 EFLAGS: 00010046
Sep 21 10:31:13 mitsos-laptop kernel: RAX: 0000000000000000 RBX: ffff8a0f46cb5a40 RCX: 0000000000000027
Sep 21 10:31:13 mitsos-laptop kernel: RDX: ffff8a167e75cfc8 RSI: 0000000000000001 RDI: ffff8a167e75cfc0
Sep 21 10:31:13 mitsos-laptop kernel: RBP: ffffffffa2775c80 R08: 0000000000000000 R09: 00000000ffffdfff
Sep 21 10:31:13 mitsos-laptop kernel: R10: ffffffffa5788880 R11: ffffd2da00544c30 R12: ffff8a0f48f84400
Sep 21 10:31:13 mitsos-laptop kernel: R13: 0000000000002000 R14: ffffd2da00544e20 R15: ffff8a167e71ec00
Sep 21 10:31:13 mitsos-laptop kernel: FS:  0000000000000000(0000) GS:ffff8a16d905b000(0000) knlGS:0000000000000000
Sep 21 10:31:13 mitsos-laptop kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Sep 21 10:31:13 mitsos-laptop kernel: CR2: 0000565444578180 CR3: 0000000222c24000 CR4: 0000000000f50ef0
Sep 21 10:31:13 mitsos-laptop kernel: PKRU: 55555554
Sep 21 10:31:13 mitsos-laptop kernel: Call Trace:
Sep 21 10:31:13 mitsos-laptop kernel:  <IRQ>
Sep 21 10:31:13 mitsos-laptop kernel:  ? __pfx_delayed_work_timer_fn+0x10/0x10
Sep 21 10:31:13 mitsos-laptop kernel:  call_timer_fn+0x26/0x120
Sep 21 10:31:13 mitsos-laptop kernel:  ? __pfx_delayed_work_timer_fn+0x10/0x10
Sep 21 10:31:13 mitsos-laptop kernel:  __run_timers+0x18a/0x280
Sep 21 10:31:13 mitsos-laptop kernel:  timer_expire_remote+0x4a/0x70
Sep 21 10:31:13 mitsos-laptop kernel:  tmigr_handle_remote+0x3a8/0x450
Sep 21 10:31:13 mitsos-laptop kernel:  handle_softirqs+0xe3/0x2a0
Sep 21 10:31:13 mitsos-laptop kernel:  __irq_exit_rcu+0xcb/0xf0
Sep 21 10:31:13 mitsos-laptop kernel:  sysvec_apic_timer_interrupt+0x71/0x90
Sep 21 10:31:13 mitsos-laptop kernel:  </IRQ>
Sep 21 10:31:13 mitsos-laptop kernel:  <TASK>
Sep 21 10:31:13 mitsos-laptop kernel:  asm_sysvec_apic_timer_interrupt+0x1a/0x20
Sep 21 10:31:13 mitsos-laptop kernel: RIP: 0010:__mt7921_mcu_set_clc+0xdd/0x200 [mt7921_common]
Sep 21 10:31:13 mitsos-laptop kernel: Code: 85 c0 74 05 80 4c 24 1b 02 8b 45 00 44 8d 70 f0 41 83 fe 10 0f 86 19 01 00 00 c7 44 24 04 00 00 00 00 48 83 c5 10 >
Sep 21 10:31:13 mitsos-laptop kernel: RSP: 0018:ffffd2da00ac7ce0 EFLAGS: 00000282
Sep 21 10:31:13 mitsos-laptop kernel: RAX: 0000000000000000 RBX: 000000000000fffa RCX: 000000008020001a
Sep 21 10:31:13 mitsos-laptop kernel: RDX: 0000000000000000 RSI: fffff42d041a7880 RDI: ffff8a0f469e3500
Sep 21 10:31:13 mitsos-laptop kernel: RBP: ffff8a0f6c8498e3 R08: ffff8a0f469e3000 R09: 000000008020001a
Sep 21 10:31:13 mitsos-laptop kernel: R10: ffff8a0f469e3000 R11: fffff42d041a7880 R12: ffff8a0f667a2000
Sep 21 10:31:13 mitsos-laptop kernel: R13: ffff8a0f490efa00 R14: 00000000feb55147 R15: ffffffffc210f84f
Sep 21 10:31:13 mitsos-laptop kernel:  mt7921_mcu_set_clc+0x31/0x70 [mt7921_common a7ebc4579218453b5caa9184252ac9397290a0db]
Sep 21 10:31:13 mitsos-laptop kernel:  mt7921_run_firmware+0x468/0x490 [mt7921_common a7ebc4579218453b5caa9184252ac9397290a0db]
Sep 21 10:31:13 mitsos-laptop kernel:  mt7921e_mcu_init+0x4c/0x80 [mt7921e 431c4cda19b414898dbe8725402943a596414829]
Sep 21 10:31:13 mitsos-laptop kernel:  mt7921_init_work+0x4f/0x1c0 [mt7921_common a7ebc4579218453b5caa9184252ac9397290a0db]
Sep 21 10:31:13 mitsos-laptop kernel:  process_one_work+0x190/0x350
Sep 21 10:31:13 mitsos-laptop kernel:  worker_thread+0x2d7/0x410
Sep 21 10:31:13 mitsos-laptop kernel:  ? __pfx_worker_thread+0x10/0x10
Sep 21 10:31:13 mitsos-laptop kernel:  kthread+0xf9/0x240
Sep 21 10:31:13 mitsos-laptop kernel:  ? __pfx_kthread+0x10/0x10
Sep 21 10:31:13 mitsos-laptop kernel:  ? __pfx_kthread+0x10/0x10
Sep 21 10:31:13 mitsos-laptop kernel:  ret_from_fork+0x1c1/0x1f0
Sep 21 10:31:13 mitsos-laptop kernel:  ? __pfx_kthread+0x10/0x10
Sep 21 10:31:13 mitsos-laptop kernel:  ret_from_fork_asm+0x1a/0x30
Sep 21 10:31:13 mitsos-laptop kernel:  </TASK>
Sep 21 10:31:13 mitsos-laptop kernel: ---[ end trace 0000000000000000 ]---

sudo dmesg -w | grep -i workqueue

[   33.828328] workqueue: cannot queue ucsi_poll_worker [typec_ucsi] on wq USBC000:00-con1
[   33.828337] WARNING: CPU: 13 PID: 1089 at kernel/workqueue.c:2257 __queue_work+0x428/0x430
[   33.828400] Workqueue: events mt7921_init_work [mt7921_common]
[   89.124669] workqueue USBC000:00-con1: drain_workqueue() isn't complete after 10 tries

udo dmesg | grep mt7921
[    6.474400] mt7921e 0000:62:00.0: enabling device (0000 -> 0002)
[    6.479343] mt7921e 0000:62:00.0: ASIC revision: 79220010
[    6.554922] mt7921e 0000:62:00.0: HW/SW Version: 0x8a108a10, Build Time: 20250903123148a
[    6.931387] mt7921e 0000:62:00.0: WM Firmware Version: ____000000, Build Time: 20250903123243
[   33.828343] Modules linked in: snd_seq_dummy snd_hrtimer snd_seq snd_seq_device bridge stp llc snd_acp70 snd_acp_i2s snd_acp_pdm snd_acp_pcm snd_sof_amd_acp70 snd_sof_amd_acp63 snd_sof_amd_vangogh snd_sof_amd_rembrandt snd_sof_amd_renoir snd_sof_amd_acp snd_sof_pci amd_atl intel_rapl_msr snd_sof_xtensa_dsp intel_rapl_common snd_sof snd_sof_utils snd_pci_ps snd_soc_acpi_amd_match snd_amd_sdw_acpi soundwire_amd soundwire_generic_allocation soundwire_bus snd_hda_codec_realtek mt7921e snd_soc_sdca mt7921_common snd_hda_codec_generic snd_soc_core mt792x_lib snd_hda_scodec_component snd_hda_codec_hdmi snd_compress mt76_connac_lib ac97_bus snd_pcm_dmaengine mt76 snd_hda_intel snd_intel_dspcfg kvm_amd snd_intel_sdw_acpi uvcvideo snd_rpl_pci_acp6x mac80211 snd_hda_codec videobuf2_vmalloc snd_acp_pci kvm snd_hda_core snd_amd_acpi_mach libarc4 uvc snd_acp_legacy_common snd_hwdep videobuf2_memops snd_pci_acp6x videobuf2_v4l2 ucsi_acpi btusb irqbypass snd_ctl_led snd_pcm videobuf2_common typec_ucsi btrtl cfg80211 polyval_clmulni
[   33.828400] Workqueue: events mt7921_init_work [mt7921_common]
[   33.828439] RIP: 0010:__mt7921_mcu_set_clc+0xdd/0x200 [mt7921_common]
[   33.828447]  mt7921_mcu_set_clc+0x31/0x70 [mt7921_common a7ebc4579218453b5caa9184252ac9397290a0db]
[   33.828449]  mt7921_run_firmware+0x468/0x490 [mt7921_common a7ebc4579218453b5caa9184252ac9397290a0db]
[   33.828451]  mt7921e_mcu_init+0x4c/0x80 [mt7921e 431c4cda19b414898dbe8725402943a596414829]
[   33.828453]  mt7921_init_work+0x4f/0x1c0 [mt7921_common a7ebc4579218453b5caa9184252ac9397290a0db]

single kthread  at 100%, laptop wouldn't poweroff.

Same exact setup, on another restart

 sudo dmesg -w | grep -i workqueue
[   33.828333] workqueue: cannot queue ucsi_poll_worker [typec_ucsi] on wq USBC000:00-con1
[   33.828345] WARNING: CPU: 3 PID: 0 at kernel/workqueue.c:2257 __queue_work+0x428/0x430
[   89.123354] workqueue USBC000:00-con1: drain_workqueue() isn't complete after 10 tries

sudo dmesg | grep mt7921
[    6.548069] mt7921e 0000:62:00.0: enabling device (0000 -> 0002)
[    6.553343] mt7921e 0000:62:00.0: ASIC revision: 79220010
[    6.629262] mt7921e 0000:62:00.0: HW/SW Version: 0x8a108a10, Build Time: 20250903123148a
[    7.006467] mt7921e 0000:62:00.0: WM Firmware Version: ____000000, Build Time: 20250903123243
[    8.291090] mt7921e 0000:62:00.0: driver own failed
[    9.519340] mt7921e 0000:62:00.0: driver own failed
[   10.147334] mt7921e 0000:62:00.0: Message 0004005c (seq 13) timeout
[   13.219839] mt7921e 0000:62:00.0: Message 00000010 (seq 14) timeout
[   13.219851] mt7921e 0000:62:00.0: Failed to get patch semaphore
[   16.291823] mt7921e 0000:62:00.0: Message 00000010 (seq 15) timeout
[   16.291835] mt7921e 0000:62:00.0: Failed to get patch semaphore
[   19.363339] mt7921e 0000:62:00.0: Message 00000010 (seq 1) timeout
[   19.363351] mt7921e 0000:62:00.0: Failed to get patch semaphore
[   22.435357] mt7921e 0000:62:00.0: Message 00000010 (seq 2) timeout
[   22.435369] mt7921e 0000:62:00.0: Failed to get patch semaphore
[   25.507819] mt7921e 0000:62:00.0: Message 00000010 (seq 3) timeout
[   25.507831] mt7921e 0000:62:00.0: Failed to get patch semaphore
[   28.643393] mt7921e 0000:62:00.0: Message 00000010 (seq 4) timeout
[   28.643405] mt7921e 0000:62:00.0: Failed to get patch semaphore
[   31.715338] mt7921e 0000:62:00.0: Message 00000010 (seq 5) timeout
[   31.715345] mt7921e 0000:62:00.0: Failed to get patch semaphore
[   33.828352] Modules linked in: snd_seq_dummy snd_hrtimer snd_seq snd_seq_device bridge stp llc snd_acp70 snd_acp_i2s snd_acp_pdm snd_acp_pcm snd_sof_amd_acp70 snd_sof_amd_acp63 snd_sof_amd_vangogh snd_sof_amd_rembrandt snd_sof_amd_renoir snd_sof_amd_acp snd_sof_pci snd_sof_xtensa_dsp snd_sof snd_sof_utils mt7921e snd_pci_ps snd_soc_acpi_amd_match mt7921_common amd_atl snd_amd_sdw_acpi intel_rapl_msr mt792x_lib intel_rapl_common soundwire_amd snd_hda_codec_realtek mt76_connac_lib soundwire_generic_allocation soundwire_bus snd_hda_codec_generic mt76 snd_soc_sdca snd_hda_scodec_component snd_soc_core snd_hda_codec_hdmi mac80211 snd_compress ac97_bus snd_hda_intel uvcvideo snd_pcm_dmaengine snd_intel_dspcfg kvm_amd snd_rpl_pci_acp6x snd_intel_sdw_acpi snd_acp_pci snd_hda_codec libarc4 snd_amd_acpi_mach videobuf2_vmalloc snd_ctl_led kvm snd_hda_core snd_acp_legacy_common uvc snd_hwdep snd_pci_acp6x videobuf2_memops cfg80211 irqbypass btusb asus_nb_wmi videobuf2_v4l2 polyval_clmulni snd_pcm btrtl snd_pci_acp5x ucsi_acpi
[   34.788345] mt7921e 0000:62:00.0: Message 00000010 (seq 6) timeout
[   34.788354] mt7921e 0000:62:00.0: Failed to get patch semaphore
[   37.923336] mt7921e 0000:62:00.0: Message 00000010 (seq 7) timeout
[   37.923343] mt7921e 0000:62:00.0: Failed to get patch semaphore
[   37.994764] mt7921e 0000:62:00.0: hardware init failed

No threads at 100%. Normal cpu usage. Laptop powered off normally

Third restart:

sudo dmesg -w | grep -i workqueue
{nothing}

sudo dmesg | grep mt7921
[    6.425336] mt7921e 0000:62:00.0: enabling device (0000 -> 0002)
[    7.479491] mt7921e 0000:62:00.0: driver own failed
[    7.479568] mt7921e 0000:62:00.0: probe with driver mt7921e failed with error -5

No thread issues, powered off normally.

On 6.16.8-arch1-1 with 20250708-1

sudo dmesg | grep USBC000
[  524.835335] ucsi_acpi USBC000:00: GET_CONNECTOR_STATUS failed (-110)
[  545.315341] ucsi_acpi USBC000:00: GET_CONNECTOR_STATUS failed (-110)

 sudo dmesg | grep mt7921
[    6.858683] mt7921e 0000:62:00.0: enabling device (0000 -> 0002)
[    6.864345] mt7921e 0000:62:00.0: ASIC revision: 79220010
[    6.938577] mt7921e 0000:62:00.0: HW/SW Version: 0x8a108a10, Build Time: 20250903123148a
[    7.315166] mt7921e 0000:62:00.0: WM Firmware Version: ____000000, Build Time: 20250903123243

...skipping...
Sep 21 15:24:07 mitsos-laptop kernel: ucsi_acpi USBC000:00: GET_CONNECTOR_STATUS failed (-110)
Sep 21 15:24:07 mitsos-laptop kernel: ucsi_acpi USBC000:00: GET_CONNECTOR_STATUS failed (-110)
Sep 21 15:24:07 mitsos-laptop kernel: ucsi_acpi USBC000:00: GET_CONNECTOR_STATUS failed (-110)
Sep 21 15:24:07 mitsos-laptop kernel: ucsi_acpi USBC000:00: GET_CONNECTOR_STATUS failed (-110)
Sep 21 15:24:07 mitsos-laptop kernel: ucsi_acpi USBC000:00: GET_CONNECTOR_STATUS failed (-110)
Sep 21 15:24:07 mitsos-laptop kernel: ucsi_acpi USBC000:00: GET_CONNECTOR_STATUS failed (-110)
Sep 21 15:24:07 mitsos-laptop kernel: ucsi_acpi USBC000:00: GET_CONNECTOR_STATUS failed (-110)
Sep 21 15:24:28 mitsos-laptop kernel: ucsi_acpi USBC000:00: GET_CONNECTOR_STATUS failed (-110)

100% thread, couldn't poweroff

Another reboot later

Sep 21 15:36:29 mitsos-laptop kernel: ACPI BIOS Error (bug): Failure creating named object [\_SB.PCI0.GPP5.WLAN._S0W], AE_ALREADY_EXISTS (20250404/dswload2-32>
Sep 21 15:36:29 mitsos-laptop kernel: ACPI Error: AE_ALREADY_EXISTS, During name lookup/catalog (20250404/psobject-220)
...
Sep 21 15:36:58 mitsos-laptop kernel: ------------[ cut here ]------------
Sep 21 15:36:58 mitsos-laptop kernel: workqueue: cannot queue ucsi_poll_worker [typec_ucsi] on wq USBC000:00-con1
Sep 21 15:36:58 mitsos-laptop kernel: WARNING: CPU: 0 PID: 347 at kernel/workqueue.c:2257 __queue_work+0x428/0x430
Sep 21 15:36:58 mitsos-laptop kernel: Modules linked in: snd_seq_dummy snd_hrtimer snd_seq snd_seq_device bridge stp llc snd_acp70 snd_acp_i2s snd_acp_pdm snd>
Sep 21 15:36:58 mitsos-laptop kernel:  snd_pcm ucsi_acpi btrtl sha512_ssse3 snd_rn_pci_acp3x sp5100_tco typec_ucsi snd_timer btintel asus_nb_wmi sha1_ssse3 sn>
Sep 21 15:36:58 mitsos-laptop kernel: CPU: 0 UID: 0 PID: 347 Comm: kworker/0:2 Tainted: G           OE       6.16.8-arch1-1 #1 PREEMPT(full)  d690182ccc8b3c99>
Sep 21 15:36:58 mitsos-laptop kernel: Tainted: [O]=OOT_MODULE, [E]=UNSIGNED_MODULE
Sep 21 15:36:58 mitsos-laptop kernel: Hardware name: ASUSTeK COMPUTER INC. ASUS Vivobook S 16 M5606WA_M5606WA/M5606WA, BIOS M5606WA.314 04/17/2025
Sep 21 15:36:58 mitsos-laptop kernel: Workqueue: events mt7921_init_work [mt7921_common]
Sep 21 15:36:58 mitsos-laptop kernel: RIP: 0010:__queue_work+0x428/0x430
Sep 21 15:36:58 mitsos-laptop kernel: Code: ee 70 fd ff 0f 0b e9 a8 fc ff ff 48 8b 73 18 49 8d 94 24 c0 00 00 00 48 c7 c7 28 a6 bb 99 c6 05 79 b7 50 02 01 e8 >
Sep 21 15:36:58 mitsos-laptop kernel: RSP: 0018:ffffcfd080003d98 EFLAGS: 00010046
Sep 21 15:36:58 mitsos-laptop kernel: RAX: 0000000000000000 RBX: ffff895346534c00 RCX: 0000000000000027
Sep 21 15:36:58 mitsos-laptop kernel: RDX: ffff895a7e41cfc8 RSI: 0000000000000001 RDI: ffff895a7e41cfc0
Sep 21 15:36:58 mitsos-laptop kernel: RBP: ffffffff98375c80 R08: 0000000000000000 R09: 00000000ffffdfff
Sep 21 15:36:58 mitsos-laptop kernel: R10: ffffffff9b389880 R11: ffffcfd080003c30 R12: ffff89535f081200
Sep 21 15:36:58 mitsos-laptop kernel: R13: 0000000000002000 R14: ffffcfd080003e20 R15: ffff895a7e49ec00
Sep 21 15:36:58 mitsos-laptop kernel: FS:  0000000000000000(0000) GS:ffff895ae311a000(0000) knlGS:0000000000000000
Sep 21 15:36:58 mitsos-laptop kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Sep 21 15:36:58 mitsos-laptop kernel: CR2: 00007fab089098c8 CR3: 0000000661e24000 CR4: 0000000000f50ef0
Sep 21 15:36:58 mitsos-laptop kernel: PKRU: 55555554
Sep 21 15:36:58 mitsos-laptop kernel: Call Trace:
Sep 21 15:36:58 mitsos-laptop kernel:  <IRQ>
Sep 21 15:36:58 mitsos-laptop kernel:  ? __pfx_delayed_work_timer_fn+0x10/0x10
Sep 21 15:36:58 mitsos-laptop kernel:  call_timer_fn+0x26/0x120
Sep 21 15:36:58 mitsos-laptop kernel:  ? __pfx_delayed_work_timer_fn+0x10/0x10
Sep 21 15:36:58 mitsos-laptop kernel:  __run_timers+0x18a/0x280
Sep 21 15:36:58 mitsos-laptop kernel:  timer_expire_remote+0x4a/0x70
Sep 21 15:36:58 mitsos-laptop kernel:  tmigr_handle_remote+0x3a8/0x450
Sep 21 15:36:58 mitsos-laptop kernel:  handle_softirqs+0xe3/0x2a0
Sep 21 15:36:58 mitsos-laptop kernel:  __irq_exit_rcu+0xcb/0xf0
Sep 21 15:36:58 mitsos-laptop kernel:  sysvec_apic_timer_interrupt+0x71/0x90
Sep 21 15:36:58 mitsos-laptop kernel:  </IRQ>
Sep 21 15:36:58 mitsos-laptop kernel:  <TASK>
Sep 21 15:36:58 mitsos-laptop kernel:  asm_sysvec_apic_timer_interrupt+0x1a/0x20
Sep 21 15:36:58 mitsos-laptop kernel: RIP: 0010:__mt7921_mcu_set_clc+0xdd/0x200 [mt7921_common]
Sep 21 15:36:58 mitsos-laptop kernel: Code: 85 c0 74 05 80 4c 24 1b 02 8b 45 00 44 8d 70 f0 41 83 fe 10 0f 86 19 01 00 00 c7 44 24 04 00 00 00 00 48 83 c5 10 >
Sep 21 15:36:58 mitsos-laptop kernel: RSP: 0018:ffffcfd081157ce0 EFLAGS: 00000282
Sep 21 15:36:58 mitsos-laptop kernel: RAX: 0000000000000000 RBX: 000000000000fffa RCX: 000000008020000b
Sep 21 15:36:58 mitsos-laptop kernel: RDX: 0000000000000000 RSI: fffffb7c047f5900 RDI: ffff89535fd64100
Sep 21 15:36:58 mitsos-laptop kernel: RBP: ffff89534c6f5928 R08: ffff89535fd64200 R09: 000000008020000b
Sep 21 15:36:58 mitsos-laptop kernel: R10: ffff89535fd64200 R11: fffffb7c047f5900 R12: ffff89534aa02000
Sep 21 15:36:58 mitsos-laptop kernel: R13: ffff89534cf83000 R14: 00000000fd189102 R15: ffffffffc203c84f
Sep 21 15:36:58 mitsos-laptop kernel:  mt7921_mcu_set_clc+0x31/0x70 [mt7921_common 3cdf242e3ae42d7fa8aa14156310f781442f51c1]
Sep 21 15:36:58 mitsos-laptop kernel:  mt7921_run_firmware+0x468/0x490 [mt7921_common 3cdf242e3ae42d7fa8aa14156310f781442f51c1]
Sep 21 15:36:58 mitsos-laptop kernel:  mt7921e_mcu_init+0x4c/0x80 [mt7921e 735dd31b085e261d5151cdac82f2007f1a57c6ad]
Sep 21 15:36:58 mitsos-laptop kernel:  mt7921_init_work+0x4f/0x1c0 [mt7921_common 3cdf242e3ae42d7fa8aa14156310f781442f51c1]
Sep 21 15:36:58 mitsos-laptop kernel:  process_one_work+0x190/0x350
Sep 21 15:36:58 mitsos-laptop kernel:  worker_thread+0x2d7/0x410
Sep 21 15:36:58 mitsos-laptop kernel:  ? __pfx_worker_thread+0x10/0x10
Sep 21 15:36:58 mitsos-laptop kernel:  kthread+0xf9/0x240
Sep 21 15:36:58 mitsos-laptop kernel:  ? __pfx_kthread+0x10/0x10
Sep 21 15:36:58 mitsos-laptop kernel:  ? __pfx_kthread+0x10/0x10
Sep 21 15:36:58 mitsos-laptop kernel:  ret_from_fork+0x1c1/0x1f0
Sep 21 15:36:58 mitsos-laptop kernel:  ? __pfx_kthread+0x10/0x10
Sep 21 15:36:58 mitsos-laptop kernel:  ret_from_fork_asm+0x1a/0x30
Sep 21 15:36:58 mitsos-laptop kernel:  </TASK>
Sep 21 15:36:58 mitsos-laptop kernel: ---[ end trace 0000000000000000 ]---

6.16.8-arch1-1, 20250917-1 upstream

[    6.707427] mt7921e 0000:62:00.0: enabling device (0000 -> 0002)
[    6.712369] mt7921e 0000:62:00.0: ASIC revision: 79220010
[    6.786343] mt7921e 0000:62:00.0: HW/SW Version: 0x8a108a10, Build Time: 20250903123148a
[    7.158633] mt7921e 0000:62:00.0: WM Firmware Version: ____000000, Build Time: 20250903123243
[   10.596038] mt7921e 0000:62:00.0: Message 0004005c (seq 13) timeout
[   10.672522] mt7921e 0000:62:00.0: HW/SW Version: 0x8a108a10, Build Time: 20250903123148a
[   10.687465] mt7921e 0000:62:00.0: WM Firmware Version: ____000000, Build Time: 20250903123243
[   33.827351] Modules linked in: snd_seq_dummy snd_hrtimer snd_seq snd_seq_device bridge stp llc snd_acp70 snd_acp_i2s snd_acp_pdm snd_acp_pcm snd_sof_amd_acp70 snd_sof_amd_acp63 snd_sof_amd_vangogh snd_sof_amd_rembrandt snd_sof_amd_renoir snd_sof_amd_acp snd_sof_pci snd_sof_xtensa_dsp snd_sof snd_sof_utils snd_pci_ps snd_soc_acpi_amd_match snd_amd_sdw_acpi mt7921e soundwire_amd mt7921_common soundwire_generic_allocation mt792x_lib soundwire_bus snd_soc_sdca amd_atl mt76_connac_lib intel_rapl_msr snd_hda_codec_realtek intel_rapl_common snd_soc_core mt76 snd_hda_codec_generic snd_compress ac97_bus snd_hda_scodec_component snd_hda_codec_hdmi snd_hda_intel snd_pcm_dmaengine snd_intel_dspcfg snd_rpl_pci_acp6x mac80211 snd_intel_sdw_acpi snd_acp_pci snd_hda_codec snd_amd_acpi_mach uvcvideo snd_hda_core snd_acp_legacy_common videobuf2_vmalloc kvm_amd uvc snd_pci_acp6x snd_hwdep libarc4 videobuf2_memops videobuf2_v4l2 snd_ctl_led kvm snd_pcm btusb videobuf2_common snd_pci_acp5x ucsi_acpi btrtl sp5100_tco cfg80211
[   33.827411] Workqueue: events mt7921_init_work [mt7921_common]
[   33.827450] RIP: 0010:__mt7921_mcu_set_clc+0xdd/0x200 [mt7921_common]
[   33.827458]  mt7921_mcu_set_clc+0x31/0x70 [mt7921_common 3cdf242e3ae42d7fa8aa14156310f781442f51c1]
[   33.827460]  mt7921_run_firmware+0x468/0x490 [mt7921_common 3cdf242e3ae42d7fa8aa14156310f781442f51c1]
[   33.827462]  mt7921e_mcu_init+0x4c/0x80 [mt7921e 735dd31b085e261d5151cdac82f2007f1a57c6ad]
[   33.827464]  mt7921_init_work+0x4f/0x1c0 [mt7921_common 3cdf242e3ae42d7fa8aa14156310f781442f51c1]

Sep 21 15:42:03 mitsos-laptop kernel: ACPI BIOS Error (bug): Failure creating named object [\_SB.PCI0.GPP5.WLAN._S0W], AE_ALREADY_EXISTS (20250404/dswload2-32>
Sep 21 15:42:03 mitsos-laptop kernel: ACPI Error: AE_ALREADY_EXISTS, During name lookup/catalog (20250404/psobject-220)
...
Sep 21 15:42:09 mitsos-laptop kernel: mt7921e 0000:62:00.0: Message 0004005c (seq 13) timeout
Sep 21 15:42:09 mitsos-laptop kernel: mt7921e 0000:62:00.0: HW/SW Version: 0x8a108a10, Build Time: 20250903123148a
Sep 21 15:42:09 mitsos-laptop kernel: mt7921e 0000:62:00.0: WM Firmware Version: ____000000, Build Time: 20250903123243
...
Sep 21 15:43:27 mitsos-laptop kernel: workqueue USBC000:00-con1: drain_workqueue() isn't complete after 10 tries
...
Sep 21 15:45:10 mitsos-laptop kernel: ucsi_acpi USBC000:00: error -ETIMEDOUT: PPM init failed

Using the patched mediatek from @loqs

[    6.677902] mt7921e 0000:62:00.0: enabling device (0000 -> 0002)
[    6.684341] mt7921e 0000:62:00.0: ASIC revision: 79220010
[    6.759458] mt7921e 0000:62:00.0: HW/SW Version: 0x8a108a10, Build Time: 20250903123148a
[    7.135840] mt7921e 0000:62:00.0: WM Firmware Version: ____000000, Build Time: 20250903123243
[   10.275400] mt7921e 0000:62:00.0: Message 0004005c (seq 12) timeout
[   10.349855] mt7921e 0000:62:00.0: HW/SW Version: 0x8a108a10, Build Time: 20250903123148a
[   10.365661] mt7921e 0000:62:00.0: WM Firmware Version: ____000000, Build Time: 20250903123243
[   14.051894] mt7921e 0000:62:00.0: Message 0004005c (seq 10) timeout
[   14.118538] mt7921e 0000:62:00.0: HW/SW Version: 0x8a108a10, Build Time: 20250903123148a
[   14.133539] mt7921e 0000:62:00.0: WM Firmware Version: ____000000, Build Time: 20250903123243
[   17.380018] mt7921e 0000:62:00.0: Message 0004005c (seq 7) timeout
[   17.445840] mt7921e 0000:62:00.0: HW/SW Version: 0x8a108a10, Build Time: 20250903123148a
[   17.460773] mt7921e 0000:62:00.0: WM Firmware Version: ____000000, Build Time: 20250903123243
[   20.963398] mt7921e 0000:62:00.0: Message 0004005c (seq 5) timeout
[   21.037452] mt7921e 0000:62:00.0: HW/SW Version: 0x8a108a10, Build Time: 20250903123148a
[   21.052828] mt7921e 0000:62:00.0: WM Firmware Version: ____000000, Build Time: 20250903123243
[   24.611401] mt7921e 0000:62:00.0: Message 0004005c (seq 3) timeout
[   24.686238] mt7921e 0000:62:00.0: HW/SW Version: 0x8a108a10, Build Time: 20250903123148a
[   24.701210] mt7921e 0000:62:00.0: WM Firmware Version: ____000000, Build Time: 20250903123243
[   28.195344] mt7921e 0000:62:00.0: Message 0004005c (seq 1) timeout
[   28.270438] mt7921e 0000:62:00.0: HW/SW Version: 0x8a108a10, Build Time: 20250903123148a
[   28.285173] mt7921e 0000:62:00.0: WM Firmware Version: ____000000, Build Time: 20250903123243
[   32.227361] mt7921e 0000:62:00.0: Message 0004005c (seq 14) timeout
[   32.300740] mt7921e 0000:62:00.0: HW/SW Version: 0x8a108a10, Build Time: 20250903123148a
[   32.315969] mt7921e 0000:62:00.0: WM Firmware Version: ____000000, Build Time: 20250903123243
[   34.339369] Modules linked in: snd_seq_dummy snd_hrtimer snd_seq snd_seq_device bridge stp llc snd_acp70 snd_acp_i2s snd_acp_pdm snd_acp_pcm snd_sof_amd_acp70 snd_sof_amd_acp63 snd_sof_amd_vangogh snd_sof_amd_rembrandt snd_sof_amd_renoir snd_sof_amd_acp snd_sof_pci snd_sof_xtensa_dsp snd_sof snd_sof_utils intel_rapl_msr amd_atl snd_pci_ps intel_rapl_common snd_soc_acpi_amd_match snd_amd_sdw_acpi soundwire_amd snd_hda_codec_realtek soundwire_generic_allocation soundwire_bus mt7921e snd_hda_codec_generic snd_soc_sdca mt7921_common snd_hda_scodec_component snd_hda_codec_hdmi mt792x_lib mt76_connac_lib snd_soc_core snd_hda_intel mt76 snd_compress kvm_amd ac97_bus snd_intel_dspcfg mac80211 uvcvideo snd_intel_sdw_acpi snd_pcm_dmaengine kvm snd_rpl_pci_acp6x videobuf2_vmalloc libarc4 snd_hda_codec snd_acp_pci uvc snd_amd_acpi_mach snd_hda_core videobuf2_memops irqbypass snd_ctl_led snd_acp_legacy_common videobuf2_v4l2 snd_hwdep snd_pci_acp6x polyval_clmulni btusb videobuf2_common cfg80211 ghash_clmulni_intel snd_pcm btrtl
[   35.747420] mt7921e 0000:62:00.0: Message 0004005c (seq 12) timeout
[   35.813812] mt7921e 0000:62:00.0: HW/SW Version: 0x8a108a10, Build Time: 20250903123148a
[   35.828709] mt7921e 0000:62:00.0: WM Firmware Version: ____000000, Build Time: 20250903123243
[   39.075832] mt7921e 0000:62:00.0: Message 0004005c (seq 9) timeout
[   39.141962] mt7921e 0000:62:00.0: HW/SW Version: 0x8a108a10, Build Time: 20250903123148a
[   39.156814] mt7921e 0000:62:00.0: WM Firmware Version: ____000000, Build Time: 20250903123243
[   42.595777] mt7921e 0000:62:00.0: Message 0004005c (seq 7) timeout
[   42.668398] mt7921e 0000:62:00.0: hardware init failed

Sep 21 15:50:14 mitsos-laptop kernel: ------------[ cut here ]------------
Sep 21 15:50:14 mitsos-laptop kernel: workqueue: cannot queue ucsi_poll_worker [typec_ucsi] on wq USBC000:00-con1
Sep 21 15:50:14 mitsos-laptop kernel: WARNING: CPU: 1 PID: 0 at kernel/workqueue.c:2257 __queue_work+0x428/0x430
Sep 21 15:50:14 mitsos-laptop kernel: Modules linked in: snd_seq_dummy snd_hrtimer snd_seq snd_seq_device bridge stp llc snd_acp70 snd_acp_i2s snd_acp_pdm snd>
Sep 21 15:50:14 mitsos-laptop kernel:  ucsi_acpi sha512_ssse3 sp5100_tco snd_timer typec_ucsi snd_pci_acp5x btintel sha1_ssse3 asus_nb_wmi videodev amd_pmf sn>
Sep 21 15:50:14 mitsos-laptop kernel: CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Tainted: G           OE       6.16.8-arch1-1 #1 PREEMPT(full)  d690182ccc8b3c99d062>
Sep 21 15:50:14 mitsos-laptop kernel: Tainted: [O]=OOT_MODULE, [E]=UNSIGNED_MODULE
Sep 21 15:50:14 mitsos-laptop kernel: Hardware name: ASUSTeK COMPUTER INC. ASUS Vivobook S 16 M5606WA_M5606WA/M5606WA, BIOS M5606WA.314 04/17/2025
Sep 21 15:50:14 mitsos-laptop kernel: RIP: 0010:__queue_work+0x428/0x430
Sep 21 15:50:14 mitsos-laptop kernel: Code: ee 70 fd ff 0f 0b e9 a8 fc ff ff 48 8b 73 18 49 8d 94 24 c0 00 00 00 48 c7 c7 28 a6 fb b7 c6 05 79 b7 50 02 01 e8 >
Sep 21 15:50:14 mitsos-laptop kernel: RSP: 0018:ffffcf40802c4d98 EFLAGS: 00010046
Sep 21 15:50:14 mitsos-laptop kernel: RAX: 0000000000000000 RBX: ffff8abe9faf9a40 RCX: 0000000000000027
Sep 21 15:50:14 mitsos-laptop kernel: RDX: ffff8ac5be45cfc8 RSI: 0000000000000001 RDI: ffff8ac5be45cfc0
Sep 21 15:50:14 mitsos-laptop kernel: RBP: ffffffffb6775c80 R08: 0000000000000000 R09: 00000000ffffdfff
Sep 21 15:50:14 mitsos-laptop kernel: R10: ffffffffb9789880 R11: ffffcf40802c4c30 R12: ffff8abe97af0e00
Sep 21 15:50:14 mitsos-laptop kernel: R13: 0000000000002000 R14: ffffcf40802c4e20 R15: ffff8ac5be49ec00
Sep 21 15:50:14 mitsos-laptop kernel: FS:  0000000000000000(0000) GS:ffff8ac604d5a000(0000) knlGS:0000000000000000
Sep 21 15:50:14 mitsos-laptop kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Sep 21 15:50:14 mitsos-laptop kernel: CR2: 00007fbf74007018 CR3: 000000081cc24000 CR4: 0000000000f50ef0
Sep 21 15:50:14 mitsos-laptop kernel: PKRU: 55555554
Sep 21 15:50:14 mitsos-laptop kernel: Call Trace:
Sep 21 15:50:14 mitsos-laptop kernel:  <IRQ>
Sep 21 15:50:14 mitsos-laptop kernel:  ? __pfx_delayed_work_timer_fn+0x10/0x10
Sep 21 15:50:14 mitsos-laptop kernel:  call_timer_fn+0x26/0x120
Sep 21 15:50:14 mitsos-laptop kernel:  ? __pfx_delayed_work_timer_fn+0x10/0x10
Sep 21 15:50:14 mitsos-laptop kernel:  __run_timers+0x18a/0x280
Sep 21 15:50:14 mitsos-laptop kernel:  timer_expire_remote+0x4a/0x70
Sep 21 15:50:14 mitsos-laptop kernel:  tmigr_handle_remote+0x3a8/0x450
Sep 21 15:50:14 mitsos-laptop kernel:  handle_softirqs+0xe3/0x2a0
Sep 21 15:50:14 mitsos-laptop kernel:  __irq_exit_rcu+0xcb/0xf0
Sep 21 15:50:14 mitsos-laptop kernel:  sysvec_apic_timer_interrupt+0x71/0x90
Sep 21 15:50:14 mitsos-laptop kernel:  </IRQ>
Sep 21 15:50:14 mitsos-laptop kernel:  <TASK>
Sep 21 15:50:14 mitsos-laptop kernel:  asm_sysvec_apic_timer_interrupt+0x1a/0x20
Sep 21 15:50:14 mitsos-laptop kernel: RIP: 0010:cpuidle_enter_state+0xbb/0x410
Sep 21 15:50:14 mitsos-laptop kernel: Code: 00 00 e8 a8 46 09 ff e8 b3 f2 ff ff 48 89 c5 0f 1f 44 00 00 31 ff e8 94 bf 07 ff 45 84 ff 0f 85 33 02 00 00 fb 0f >
Sep 21 15:50:14 mitsos-laptop kernel: RSP: 0018:ffffcf40801d7e78 EFLAGS: 00000246
Sep 21 15:50:14 mitsos-laptop kernel: RAX: ffff8ac604d5a000 RBX: 0000000000000003 RCX: 0000000000000000
Sep 21 15:50:14 mitsos-laptop kernel: RDX: 00000007fec89002 RSI: fffffffd7bda51cc RDI: 0000000000000000
Sep 21 15:50:14 mitsos-laptop kernel: RBP: 00000007fec89002 R08: 0000000000000002 R09: 000000000000000f
Sep 21 15:50:14 mitsos-laptop kernel: R10: 0000000000000000 R11: 0000000000000000 R12: ffff8abe80f47800
Sep 21 15:50:14 mitsos-laptop kernel: R13: ffffffffb8bfc480 R14: 0000000000000003 R15: 0000000000000000
Sep 21 15:50:14 mitsos-laptop kernel:  ? cpuidle_enter_state+0xac/0x410
Sep 21 15:50:14 mitsos-laptop kernel:  cpuidle_enter+0x31/0x50
Sep 21 15:50:14 mitsos-laptop kernel:  do_idle+0x1b1/0x210
Sep 21 15:50:14 mitsos-laptop kernel:  cpu_startup_entry+0x29/0x30
Sep 21 15:50:14 mitsos-laptop kernel:  start_secondary+0x119/0x140
Sep 21 15:50:14 mitsos-laptop kernel:  common_startup_64+0x13e/0x141
Sep 21 15:50:14 mitsos-laptop kernel:  </TASK>
Sep 21 15:50:14 mitsos-laptop kernel: ---[ end trace 0000000000000000 ]---
Sep 21 15:50:15 mitsos-laptop kernel: mt7921e 0000:62:00.0: Message 0004005c (seq 12) timeout
Sep 21 15:50:15 mitsos-laptop kernel: mt7921e 0000:62:00.0: HW/SW Version: 0x8a108a10, Build Time: 20250903123148a
Sep 21 15:50:15 mitsos-laptop kernel: mt7921e 0000:62:00.0: WM Firmware Version: ____000000, Build Time: 20250903123243
...
Sep 21 15:50:18 mitsos-laptop kernel: mt7921e 0000:62:00.0: Message 0004005c (seq 9) timeout
Sep 21 15:50:18 mitsos-laptop kernel: mt7921e 0000:62:00.0: HW/SW Version: 0x8a108a10, Build Time: 20250903123148a
Sep 21 15:50:18 mitsos-laptop kernel: mt7921e 0000:62:00.0: WM Firmware Version: ____000000, Build Time: 20250903123243
Sep 21 15:50:22 mitsos-laptop kernel: mt7921e 0000:62:00.0: Message 0004005c (seq 7) timeout
Sep 21 15:50:22 mitsos-laptop kernel: mt7921e 0000:62:00.0: hardware init failed
Sep 21 15:50:25 mitsos-laptop systemd[1575]: Started kitty child process: 1914 launched by: 1895.
Sep 21 15:50:31 mitsos-laptop sudo[1971]:   mitsos : TTY=pts/0 ; PWD=/home/mitsos ; USER=root ; COMMAND=/usr/bin/dmesg
Sep 21 15:50:31 mitsos-laptop sudo[1971]: pam_unix(sudo:session): session opened for user root(uid=0) by mitsos(uid=1000)
Sep 21 15:50:31 mitsos-laptop sudo[1971]: pam_unix(sudo:session): session closed for user root
Sep 21 15:51:09 mitsos-laptop kernel: workqueue USBC000:00-con1: drain_workqueue() isn't complete after 10 tries

seth

Member

From: Don't DM me only for attention

Registered: 2012-09-03

Posts: 69,144

Re: [SOLVED] mt7921e Wi-Fi fails to initialize on kernel 6.16.7-arch1-1

[   42.668398] mt7921e 0000:62:00.0: hardware init failed

I'd first and foremost try to take the system off power (that includes the battery) for some minutes.
I the issue remains w/ loqs' firmware package, please open a new thread and post a complete system journal for a boot covering such crash.

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How to upload text · How to boot w/o GUI · Disable Windows Fast-Start! · Fix your xinitrc

jrfernandez

Member

Registered: 2024-03-24

Posts: 23

Re: [SOLVED] mt7921e Wi-Fi fails to initialize on kernel 6.16.7-arch1-1

I'd first and foremost try to take the system off power (that includes the battery) for some minutes.

This fixed it for me. I rolled back to the prev version `linux-firmware-mediatek-20250808-1-any`, but wifi wouldn't come back after restarts. I turned off my laptop for a few minutes, and after a fresh boot things started working again.

I'm now curious why this was required for the rollback to kick in?

Last edited by jrfernandez (2025-09-21 14:31:01)

seth

Member

From: Don't DM me only for attention

Registered: 2012-09-03

Posts: 69,144

Re: [SOLVED] mt7921e Wi-Fi fails to initialize on kernel 6.16.7-arch1-1

Mediatek wifi chips are notorious for probably SRAM bugs, unrelated to any genuine firmware bugs (which might simply trigger this as secondary problem, but dual booting is also a popular way to constantly run into this)
Can you also test https://drive.google.com/file/d/1_TZ7aG … sp=sharing ?

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How to upload text · How to boot w/o GUI · Disable Windows Fast-Start! · Fix your xinitrc

explohash

Member

Registered: 2025-09-21

Posts: 1

Re: [SOLVED] mt7921e Wi-Fi fails to initialize on kernel 6.16.7-arch1-1

I'd first and foremost try to take the system off power (that includes the battery) for some minutes.

This fixed it for me. I rolled back to the prev version `linux-firmware-mediatek-20250808-1-any`, but wifi wouldn't come back after restarts. I turned off my laptop for a few minutes, and after a fresh boot things started working again.

I'm now curious why this was required for the rollback to kick in?

I had the same issue, spend the last few hours trying to downgrade and eventually also finding that commit, but downgrading and keeping my laptop off and without power eventually made it work.