Bug 218955

Created attachment 306453 [details]
Compressed journalctl logs from relevant boots

I have been running into this issue when trying to transfer files at high bandwidth speeds across Wi-Fi.

lspci reports my network card being the following, using the kernel driver ath12k_pci

06:00.0 Network controller: Qualcomm Technologies, Inc WCN785x Wi-Fi 7(802.11be) 320MHz 2x2 [FastConnect 7800] (rev 01)

Kernel 6.10.0-rc3, compiled 6/11/24

Steps to reproduce:
1) Mount a network file share
2) Attempt to transfer a large (20gb+) file

Attempting to toggle wi-fi will cause the kernel to hang. Attempting to shutdown will cause cifs to hang, waiting on the network endpoint. You will need to force the machine off.

Forcing the machine off will cause the Wi-Fi card to disappear completely from the system, until the PSU is turned off and the power button is held for ~10 seconds. This is technically a second bug, though it is somewhat tied with this first one.

Originally posted on the arch forum, traced to be a kernel issue. The logs attached to this bug report are captured with a kernel built from the kernel.org source, and default config: https://bbs.archlinux.org/viewtopic.php?pid=2175851

The logs.zip archive contains the following logs, captured using journalctl:
crash.log: The boot that the issue was initially triggered.
nowifi_boot.log: The boot that the Wi-Fi disappears from the system.
working_boot.log: The boot after the no wifi boot, Wi-Fi working as expected.

Additional notes:
- Windows is not installed and has not been for months, this is not a dual boot.
- My motherboard firmware is up to date.
- Running mkinitcpio -P shows no missing firmware messages.
- The Wi-Fi disappearing issue was not an issue in Windows.
- I have sleep disabled via masking the relevant systemd targets.
- All attached logs were collected and reproduced as soon at the system starts up.
- (This has not been tested since I originally made the move from Windows to arch, though I assume there has been no change): When the Wi-Fi disappears in Linux, it also disappears in Windows.