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#1 2025-11-18 03:51:19

rapzy
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Registered: 2024-01-17
Posts: 32

MT7921 (mt7921e) driver keeps crashing and disabling Wi-Fi

My Wi-Fi driver keeps shutting off randomly on my laptop (Asus TUF A15) using the MediaTek MT7921 card. I have to reboot the system to get it working again, and even then it only works intermittently before failing again.

❯ lspci -k | grep -A4 -i network
pcilib: Error reading /sys/bus/pci/devices/0000:00:08.3/label: Operation not permitted
03:00.0 Network controller: MEDIATEK Corp. MT7921 802.11ax PCIe Wireless Network Adapter [Filogic 330]
	Subsystem: AzureWave Device 4680
	Kernel driver in use: mt7921e
	Kernel modules: mt7921e

sudo journalctl -b | curl -F 'file=@-' 0x0.st
These are the services and I'm not sure if more than one thing is trying to control the network.

❯ systemctl list-units --type service --no-pager
  UNIT                                    LOAD   ACTIVE SUB     DESCRIPTION
  avahi-daemon.service                    loaded active running Avahi mDNS/DNS-SD Stack
  bluetooth.service                       loaded active running Bluetooth service
  containerd.service                      loaded active running containerd container runtime
  cups-browsed.service                    loaded active running Make remote CUPS printers available lo…
  cups.service                            loaded active running CUPS Scheduler
  dbus-broker.service                     loaded active running D-Bus System Message Bus
  docker.service                          loaded active running Docker Application Container Engine
  kmod-static-nodes.service               loaded active exited  Create List of Static Device Nodes
  NetworkManager-wait-online.service      loaded active exited  Network Manager Wait Online
  NetworkManager.service                  loaded active running Network Manager
  plymouth-quit-wait.service              loaded active exited  Hold until boot process finishes up
  plymouth-quit.service                   loaded active exited  Terminate Plymouth Boot Screen
  plymouth-read-write.service             loaded active exited  Tell Plymouth To Write Out Runtime Data
  plymouth-start.service                  loaded active exited  Show Plymouth Boot Screen
  polkit.service                          loaded active running Authorization Manager
  postgresql.service                      loaded active running PostgreSQL database server
  power-profiles-daemon.service           loaded active running Power Profiles daemon
  rtkit-daemon.service                    loaded active running RealtimeKit Scheduling Policy Service
  sddm.service                            loaded active running Simple Desktop Display Manager
  systemd-backlight@backlight:nvidia_0.s… loaded active exited  Load/Save Screen Backlight Brightness …
  systemd-backlight@leds:asus::kbd_backl… loaded active exited  Load/Save Screen Backlight Brightness …
  systemd-journal-flush.service           loaded active exited  Flush Journal to Persistent Storage
  systemd-journald.service                loaded active running Journal Service
  systemd-logind.service                  loaded active running User Login Management
  systemd-modules-load.service            loaded active exited  Load Kernel Modules
  systemd-random-seed.service             loaded active exited  Load/Save OS Random Seed
  systemd-remount-fs.service              loaded active exited  Remount Root and Kernel File Systems
  systemd-resolved.service                loaded active running Network Name Resolution
  systemd-sysctl.service                  loaded active exited  Apply Kernel Variables
  systemd-timesyncd.service               loaded active running Network Time Synchronization
  systemd-tmpfiles-setup-dev-early.servi… loaded active exited  Create Static Device Nodes in /dev gra…
  systemd-tmpfiles-setup-dev.service      loaded active exited  Create Static Device Nodes in /dev
  systemd-tmpfiles-setup.service          loaded active exited  Create System Files and Directories
  systemd-udev-load-credentials.service   loaded active exited  Load udev Rules from Credentials
  systemd-udev-trigger.service            loaded active exited  Coldplug All udev Devices
  systemd-udevd.service                   loaded active running Rule-based Manager for Device Events a…
  systemd-update-utmp.service             loaded active exited  Record System Boot/Shutdown in UTMP
  systemd-user-sessions.service           loaded active exited  Permit User Sessions
  systemd-userdb-load-credentials.service loaded active exited  Load JSON user/group Records from Cred…
  systemd-userdbd.service                 loaded active running User Database Manager
  systemd-vconsole-setup.service          loaded active exited  Virtual Console Setup
  systemd-zram-setup@zram0.service        loaded active exited  Create swap on /dev/zram0
  udisks2.service                         loaded active running Disk Manager
  ufw.service                             loaded active exited  CLI Netfilter Manager
  upower.service                          loaded active running Daemon for power management
  user-runtime-dir@1000.service           loaded active exited  User Runtime Directory /run/user/1000
  user@1000.service                       loaded active running User Manager for UID 1000
  wpa_supplicant.service                  loaded active running WPA supplicant

Legend: LOAD   → Reflects whether the unit definition was properly loaded.
        ACTIVE → The high-level unit activation state, i.e. generalization of SUB.
        SUB    → The low-level unit activation state, values depend on unit type.

48 loaded units listed. Pass --all to see loaded but inactive units, too.
To show all installed unit files use 'systemctl list-unit-files'.

I’ve updated the MediaTek firmware package, but it didn’t help:

❯ pacman -Qs linux-firmware-mediatek
local/linux-firmware-mediatek 20251111-1
    Firmware files for Linux - Firmware for MediaTek and Ralink devices

I've tried few things:

  • Boot parameter: pcie_aspm=off

  • Blacklisting mt7921e at boot, then manually loading it with: 

    sudo modprobe -v mt7921e

Sometimes the laptop even freezes and the Caps Lock LED starts blinking.

Last edited by rapzy (2025-11-18 04:01:32)

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#2 2025-11-18 09:33:56

seth
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From: Don't DM me only for attention
Registered: 2012-09-03
Posts: 73,189

Re: MT7921 (mt7921e) driver keeps crashing and disabling Wi-Fi

Nov 18 09:01:46 sarjyant sudo[1762]: sarjyant : TTY=pts/0 ; PWD=/home/sarjyant ; USER=root ; COMMAND=/usr/bin/modprobe -v mt7921e
Nov 18 09:01:46 sarjyant kernel: mt7921e 0000:03:00.0: enabling device (0000 -> 0002)
Nov 18 09:01:46 sarjyant kernel: mt7921e 0000:03:00.0: disabling ASPM  L1
Nov 18 09:01:46 sarjyant kernel: mt7921e 0000:03:00.0: ASIC revision: 79610010
Nov 18 09:01:46 sarjyant kernel: mt7921e 0000:03:00.0: HW/SW Version: 0x8a108a10, Build Time: 20250625153620a
Nov 18 09:01:46 sarjyant kernel: mt7921e 0000:03:00.0: WM Firmware Version: ____010000, Build Time: 20250625153703
Nov 18 09:01:47 sarjyant NetworkManager[688]: <info>  [1763435807.7088] rfkill1: found Wi-Fi radio killswitch (at /sys/devices/pci0000:00/0000:00:02.2/0000:03:00.0/ieee80211/phy0/rfkill1) (driver mt7921e)
Nov 18 09:01:47 sarjyant kernel: mt7921e 0000:03:00.0 wlp3s0: renamed from wlan0

gets loaded late manually but then there're no indications of crashes, signal breakdowns or network losses in the journal.

Looks like there's a stale AP

Nov 18 09:01:49 sarjyant wpa_supplicant[1803]: wlp3s0: SME: Trying to authenticate with c2:8b:a9:55:7c:3b (SSID='Cloco@Wlink-Static' freq=5745 MHz)
Nov 18 09:01:50 sarjyant wpa_supplicant[1803]: wlp3s0: Trying to associate with c2:8b:a9:55:7c:3b (SSID='Cloco@Wlink-Static' freq=5745 MHz)
Nov 18 09:01:50 sarjyant wpa_supplicant[1803]: wlp3s0: Added BSSID c2:8b:a9:55:7c:3b into ignore list, ignoring for 10 seconds
Nov 18 09:01:52 sarjyant wpa_supplicant[1803]: wlp3s0: SME: Trying to authenticate with ba:8b:a9:44:cf:7f (SSID='Cloco@Wlink-Static' freq=5320 MHz)
Nov 18 09:01:52 sarjyant wpa_supplicant[1803]: wlp3s0: Trying to associate with ba:8b:a9:44:cf:7f (SSID='Cloco@Wlink-Static' freq=5320 MHz)
Nov 18 09:01:52 sarjyant wpa_supplicant[1803]: wlp3s0: Associated with ba:8b:a9:44:cf:7f
Nov 18 09:01:52 sarjyant wpa_supplicant[1803]: wlp3s0: CTRL-EVENT-SUBNET-STATUS-UPDATE status=0
Nov 18 09:01:53 sarjyant wpa_supplicant[1803]: wlp3s0: WPA: Key negotiation completed with ba:8b:a9:44:cf:7f [PTK=CCMP GTK=CCMP]
Nov 18 09:01:53 sarjyant wpa_supplicant[1803]: wlp3s0: CTRL-EVENT-CONNECTED - Connection to ba:8b:a9:44:cf:7f completed [id=0 id_str=]

but that's dealt with and no further issues are apparent.

Please post a journal that actually covers a network breakdown or crash of any kind ("Caps Lock LED starts blinking" is a kernel panic, you'll not get journals from those w/o https://wiki.archlinux.org/title/Kdump )
Fwwi, there's https://bbs.archlinux.org/viewtopic.php … 9#p2273249 (maybe doesn't only affect iwlwifi)

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#3 2025-11-19 04:04:25

rapzy
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Registered: 2024-01-17
Posts: 32

Re: MT7921 (mt7921e) driver keeps crashing and disabling Wi-Fi

This journal contains the crash.
https://0x0.st/Kfl2.txt

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#4 2025-11-19 08:10:56

seth
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From: Don't DM me only for attention
Registered: 2012-09-03
Posts: 73,189

Re: MT7921 (mt7921e) driver keeps crashing and disabling Wi-Fi

Nov 19 09:12:21 sarjyant kernel: mt7921e 0000:03:00.0: HW/SW Version: 0x8a108a10, Build Time: 20250625153620a
Nov 19 09:12:22 sarjyant kernel: mt7921e 0000:03:00.0: WM Firmware Version: ____010000, Build Time: 20250625153703
Nov 19 09:12:22 sarjyant NetworkManager[699]: <info>  [1763522842.9018] rfkill1: found Wi-Fi radio killswitch (at /sys/devices/pci0000:00/0000:00:02.2/0000:03:00.0/ieee80211/phy0/rfkill1) (driver mt7921e)
Nov 19 09:12:22 sarjyant kernel: mt7921e 0000:03:00.0 wlp3s0: renamed from wlan0
Nov 19 09:30:02 sarjyant kernel: mt7921e 0000:03:00.0: driver own failed
Nov 19 09:30:03 sarjyant kernel: mt7921e 0000:03:00.0: driver own failed
Nov 19 09:30:04 sarjyant kernel: mt7921e 0000:03:00.0: driver own failed
Nov 19 09:30:06 sarjyant kernel: mt7921e 0000:03:00.0: Timeout for driver own

https://bbs.archlinux.org/viewtopic.php … 4#p2267274
But the device initially works and the firmware is different and s seems the chip.

pci=noaer

Why is that there? Do you otherwise get a lot of noise on the bus?
Also please post

lspci -tvnn
mt7921e.disable_aspm=1

but there's already

Nov 19 09:12:20 sarjyant kernel: PCIe ASPM is disabled
Nov 19 09:12:20 sarjyant kernel: acpi PNP0A08:00: _OSC: not requesting OS control; OS requires [ExtendedConfig ASPM ClockPM MSI]
Nov 19 09:12:21 sarjyant kernel: mt7921e 0000:03:00.0: disabling ASPM  L1

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#5 2025-11-19 10:27:51

rapzy
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Registered: 2024-01-17
Posts: 32

Re: MT7921 (mt7921e) driver keeps crashing and disabling Wi-Fi

Why is that there? Do you otherwise get a lot of noise on the bus?

I was trying out different solutions I found on the internet.

❯ lspci -tvnn
-[0000:00]-+-00.0  Advanced Micro Devices, Inc. [AMD] Family 17h-19h PCIe Root Complex [1022:14b5]
           +-00.2  Advanced Micro Devices, Inc. [AMD] Family 17h-19h IOMMU [1022:14b6]
           +-01.0  Advanced Micro Devices, Inc. [AMD] Family 17h-19h PCIe Dummy Host Bridge [1022:14b7]
           +-01.1-[01]--+-00.0  NVIDIA Corporation GA107 [GeForce RTX 2050] [10de:25ad]
           |            \-00.1  NVIDIA Corporation GA107 High Definition Audio Controller [10de:2291]
           +-02.0  Advanced Micro Devices, Inc. [AMD] Family 17h-19h PCIe Dummy Host Bridge [1022:14b7]
           +-02.1-[02]----00.0  Realtek Semiconductor Co., Ltd. RTL8111/8168/8211/8411 PCI Express Gigabit Ethernet Controller [10ec:8168]
           +-02.2-[03]----00.0  MEDIATEK Corp. MT7921 802.11ax PCIe Wireless Network Adapter [Filogic 330] [14c3:7961]
           +-02.4-[04]----00.0  Sandisk Corp WD SN560/SN740/SN770/SN5000 NVMe SSD [15b7:5017]
           +-03.0  Advanced Micro Devices, Inc. [AMD] Family 17h-19h PCIe Dummy Host Bridge [1022:14b7]
           +-04.0  Advanced Micro Devices, Inc. [AMD] Family 17h-19h PCIe Dummy Host Bridge [1022:14b7]
           +-08.0  Advanced Micro Devices, Inc. [AMD] Family 17h-19h PCIe Dummy Host Bridge [1022:14b7]
           +-08.1-[05]--+-00.0  Advanced Micro Devices, Inc. [AMD/ATI] Dummy Function (absent graphics controller) [1002:145a]
           |            +-00.2  Advanced Micro Devices, Inc. [AMD] Family 19h PSP/CCP [1022:1649]
           |            +-00.3  Advanced Micro Devices, Inc. [AMD] Rembrandt USB4 XHCI controller #3 [1022:161d]
           |            +-00.4  Advanced Micro Devices, Inc. [AMD] Rembrandt USB4 XHCI controller #4 [1022:161e]
           |            +-00.5  Advanced Micro Devices, Inc. [AMD] Audio Coprocessor [1022:15e2]
           |            \-00.6  Advanced Micro Devices, Inc. [AMD] Family 17h/19h/1ah HD Audio Controller [1022:15e3]
           +-08.3-[06]--+-00.0  Advanced Micro Devices, Inc. [AMD] Rembrandt USB4 XHCI controller #8 [1022:161f]
           |            +-00.3  Advanced Micro Devices, Inc. [AMD] Rembrandt USB4 XHCI controller #5 [1022:15d6]
           |            \-00.4  Advanced Micro Devices, Inc. [AMD] Rembrandt USB4 XHCI controller #6 [1022:15d7]
           +-14.0  Advanced Micro Devices, Inc. [AMD] FCH SMBus Controller [1022:790b]
           +-14.3  Advanced Micro Devices, Inc. [AMD] FCH LPC Bridge [1022:790e]
           +-18.0  Advanced Micro Devices, Inc. [AMD] Rembrandt Data Fabric: Device 18h; Function 0 [1022:1679]
           +-18.1  Advanced Micro Devices, Inc. [AMD] Rembrandt Data Fabric: Device 18h; Function 1 [1022:167a]
           +-18.2  Advanced Micro Devices, Inc. [AMD] Rembrandt Data Fabric: Device 18h; Function 2 [1022:167b]
           +-18.3  Advanced Micro Devices, Inc. [AMD] Rembrandt Data Fabric: Device 18h; Function 3 [1022:167c]
           +-18.4  Advanced Micro Devices, Inc. [AMD] Rembrandt Data Fabric: Device 18h; Function 4 [1022:167d]
           +-18.5  Advanced Micro Devices, Inc. [AMD] Rembrandt Data Fabric: Device 18h; Function 5 [1022:167e]
           +-18.6  Advanced Micro Devices, Inc. [AMD] Rembrandt Data Fabric: Device 18h; Function 6 [1022:167f]
           \-18.7  Advanced Micro Devices, Inc. [AMD] Rembrandt Data Fabric: Device 18h; Function 7 [1022:1680]

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#6 2025-11-19 13:19:26

seth
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From: Don't DM me only for attention
Registered: 2012-09-03
Posts: 73,189

Re: MT7921 (mt7921e) driver keeps crashing and disabling Wi-Fi

"pci=noaer" doesn't fix anything, it only suppresses errors - if you remove that, do you get a lot of PCI errors ahead of the chip failing?

The MT7921 is on the same bus as the nvme…
https://wiki.archlinux.org/title/Solid_ … leshooting
Instead of "pci=noaer" add "nvme_core.default_ps_max_latency_us=0 pcie_aspm=off pcie_port_pm=off iommu=soft"

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#7 2025-11-20 03:27:45

rapzy
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Registered: 2024-01-17
Posts: 32

Re: MT7921 (mt7921e) driver keeps crashing and disabling Wi-Fi

do you get a lot of PCI errors ahead of the chip failing?

I get these everytime I boot, I don't think it's related to Wifi failure

Nov 20 08:58:32 sarjyant kernel: ACPI BIOS Error (bug): Could not resolve symbol [\_SB.PCI0.GPP2.WWAN], AE_NOT_FOUND (20250404/dswload2-162)
Nov 20 08:58:32 sarjyant kernel: ACPI Error: AE_NOT_FOUND, During name lookup/catalog (20250404/psobject-220)
Nov 20 08:58:32 sarjyant kernel: ACPI BIOS Error (bug): Could not resolve symbol [\_SB.PCI0.GPP5.RTL8], AE_NOT_FOUND (20250404/dswload2-162)
Nov 20 08:58:32 sarjyant kernel: ACPI Error: AE_NOT_FOUND, During name lookup/catalog (20250404/psobject-220)
Nov 20 08:58:32 sarjyant kernel: ACPI BIOS Error (bug): Failure creating named object [\_SB.PCI0.GPP6.WLAN._S0W], AE_ALREADY_EXISTS (20250404/dswload2-326)
Nov 20 08:58:32 sarjyant kernel: ACPI Error: AE_ALREADY_EXISTS, During name lookup/catalog (20250404/psobject-220)
Nov 20 08:58:32 sarjyant kernel: ACPI BIOS Error (bug): Could not resolve symbol [\_SB.PCI0.GPP7.DEV0], AE_NOT_FOUND (20250404/dswload2-162)
Nov 20 08:58:32 sarjyant kernel: ACPI Error: AE_NOT_FOUND, During name lookup/catalog (20250404/psobject-220)
Nov 20 08:58:32 sarjyant kernel: ACPI BIOS Error (bug): Could not resolve symbol [\_TZ.THRM._SCP.CTYP], AE_NOT_FOUND (20250404/psargs-332)
Nov 20 08:58:32 sarjyant kernel: ACPI Error: Aborting method \_TZ.THRM._SCP due to previous error (AE_NOT_FOUND) (20250404/psparse-529)

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#8 2025-11-20 08:35:03

seth
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From: Don't DM me only for attention
Registered: 2012-09-03
Posts: 73,189

Re: MT7921 (mt7921e) driver keeps crashing and disabling Wi-Fi

Those are kinda normal - you'd be looking for problems that look more like

Nov 19 20:16:39 archlinux kernel: pcieport 0000:00:1c.7: AER: Correctable error message received from 0000:00:1c.7
Nov 19 20:16:39 archlinux kernel: pcieport 0000:00:1c.7: PCIe Bus Error: severity=Correctable, type=Physical Layer, (Receiver ID)
Nov 19 20:16:39 archlinux kernel: pcieport 0000:00:1c.7:   device [8086:a397] error status/mask=00000001/00002000
Nov 19 20:16:39 archlinux kernel: pcieport 0000:00:1c.7:    [ 0] RxErr                  (First)

Did you add the nvme mitigating parameters and does that have any impact so far?

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#9 2025-11-20 09:55:34

rapzy
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Registered: 2024-01-17
Posts: 32

Re: MT7921 (mt7921e) driver keeps crashing and disabling Wi-Fi

GRUB_CMDLINE_LINUX_DEFAULT="loglevel=3 quiet nvme_core.default_ps_max_latency_us=0 pcie_aspm=off pcie_port_pm=off iommu=soft"

These are my current parameters. I haven’t experienced any issues today, but I’m not sure whether that’s due to these settings. I’ll update after a few days of usage.

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#10 2025-11-21 04:50:18

rapzy
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Registered: 2024-01-17
Posts: 32

Re: MT7921 (mt7921e) driver keeps crashing and disabling Wi-Fi

The issue still persists. I actually experience more frequent kernel panics in the laptop.

Last edited by rapzy (2025-11-21 08:53:19)

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#11 2025-11-24 16:00:34

seth
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From: Don't DM me only for attention
Registered: 2012-09-03
Posts: 73,189

Re: MT7921 (mt7921e) driver keeps crashing and disabling Wi-Fi

Please post your complete system journal for a boot were you lost the NIC and without "pci=noaer" (losing the wifi will not "freeze" the system, but losing the root partition would)
Can you provoke this from the arch installation iso (ie a usb boot where you don't rely on the nvme as root) and thus avoid any freezes?

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