Arch Linux

Katherine1

Member

Registered: 2011-05-02

Posts: 44

Wifi stopped working after update last night

Hey, this morning I woke up to find that my wifi is not working. At the moment I'm connected by wired internet, but I really need to get wifi working again.

At the moment, the hardware shows up on lspci -k just fine:

04:00.0 Network controller: Qualcomm Technologies, Inc WCN785x Wi-Fi 7(802.11be) 320MHz 2x2 [FastConnect 7800] (rev 01)
        Subsystem: Quectel Wireless Solutions Co., Ltd. Device 8000
        Kernel driver in use: ath12k_pci
        Kernel modules: ath12k

If I check ip link:

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: enp198s0f3u1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP mode DEFAULT group default qlen 1000
    link/ether 9c:bf:0d:00:a7:2a brd ff:ff:ff:ff:ff:ff
    altname enx9cbf0d00a72a

The wifi interface is missing.

Also Bluetooth seems to be working fine. I checked and verified that the antennas haven't come loose.

EDIT: I ran dmsg |grep ath12k and got the following:

[   18.218215] ath12k_pci 0000:04:00.0: BAR 0 [mem 0x90600000-0x907fffff 64bit]: assigned
[   18.218233] ath12k_pci 0000:04:00.0: enabling device (0000 -> 0002)
[   18.218475] ath12k_pci 0000:04:00.0: MSI vectors: 16
[   18.218479] ath12k_pci 0000:04:00.0: Hardware name: wcn7850 hw2.0
[   18.761160] ath12k_pci 0000:04:00.0: chip_id 0x2 chip_family 0x4 board_id 0xff soc_id 0x40170200
[   18.761168] ath12k_pci 0000:04:00.0: fw_version 0x1105811c fw_build_timestamp 2025-03-11 07:08 fw_build_id QC_IMAGE_VERSION_STRING=WLAN.HMT.1.1.c5-00284-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3
[   19.044790] ath12k_pci 0000:04:00.0: ignore reset dev flags 0x200
[   24.228431] ath12k_pci 0000:04:00.0: failed to receive wmi unified ready event: -110
[   24.228887] ath12k_pci 0000:04:00.0: failed to start core: -110
[   24.231520] ath12k_pci 0000:04:00.0: qmi failed to send mode request, mode: 4, err = -5
[   24.231524] ath12k_pci 0000:04:00.0: qmi failed to send wlan mode off

Last edited by Katherine1 (2025-05-11 12:34:15)

Scimmia

Fellow

Registered: 2012-09-01

Posts: 13,084

Re: Wifi stopped working after update last night

https://bbs.archlinux.org/viewtopic.php?id=305531
https://bbs.archlinux.org/viewtopic.php?id=305532

Katherine1

Member

Registered: 2011-05-02

Posts: 44

Re: Wifi stopped working after update last night

https://bbs.archlinux.org/viewtopic.php?id=305531
https://bbs.archlinux.org/viewtopic.php?id=305532

Ah, I see. It looks tied to to using the latest regular release kernel along with the latest firmware package? Thanks for the info.

ewaller

Administrator

From: Pasadena, CA

Registered: 2009-07-13

Posts: 20,475

Re: Wifi stopped working after update last night

Closing this thread in lieu of the others.

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