Wifi stopped working after Kernel 6.8.0-40 update

Hardware Support
1

Hi,

I've previously posted regarding the issues I faced after the Kernel 6.8.0-40 update here Kernel 6.8.0-40 update bricked my system (sort of). It outlined the steps I needed to take to return my gaming rig back to operation. I've since had time to review my ASUS ROG Zephyrus G15 and the missing WIFI driver issue.

The WIFI was functioning perfectly on Zorin OS 17 Pro 6.5.0-45 prior to the update. But since the update, it's no longer available.

sudo lshw -c network
...
  *-network UNCLAIMED
       description: Network controller
       product: MEDIATEK Corp.
       vendor: MEDIATEK Corp.
       physical id: 0
       bus info: pci@xxxx:xx:xx
       version: 00
       width: 64 bits
       clock: 33MHz
       capabilities: pciexpress msi pm cap_list
       configuration: latency=0
       resources: memory:xxxxxxx-xxxxxxx memory:xxxxxxx-xxxxxxx

And

sudo lspci -vv -s xx
xx 	Network controller: MEDIATEK Corp. Device 0616
	Subsystem: Foxconn International, Inc. Device e0cd
	...
	Kernel modules: mt7921e

And

sudo lsmod | grep mt7921e
mt7921e                28672  0
mt7921_common         118784  1 mt7921e
mt76_connac_lib       102400  2 mt7921e,mt7921_common
mt76                  135168  3 mt7921e,mt7921_common,mt76_connac_lib

Removed 6.8.0-40 and booted back to:

uname -a
Linux xxxxxxxx 6.5.0-45-generic #45~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC Mon Jul 15 16:40:02 UTC 2 x86_64 x86_64 x86_64 GNU/Linux

WIFI is still broken exactly as before.

Any idea what I can try next?

Thanks.

2

When You are back on the 6.5 Kernel, you could uninstall the Driver for Your Wifi and install it again.

3

My understanding of it is that the mt7921 kernel modules ship with the kernel. I purged and reinstalled linux-image-6.5.0-40, linux-modules, etc... but it hasn't made a difference.

Thanks.

4

Anything in this #5 post work from linuxquestions.org help?

https://www.linuxquestions.org/questions/linux-hardware-18/wifi-driver-mt7921e-stop-working-after-kernel-update-4175725840/#post6436559

1 Like
5

Have no idea why this works, but a hard shutdown (power off) and restart with no power cable fixed the issue. mt7921e: probe of 0000:02:00.0 failed with error -5 · Issue #548 · openwrt/mt76 · GitHub.

1 Like