[arch-general] System Freeze on sleep

[Prateek Sadhukhan]

Thank you for all the ideas. The issue is now solved.

This is somehow caused by the ath10k_pci wireless driver. On my Dell Vostro
laptop this is a known issue (Arch Wiki), that after resume wireless connection
fails and I have to reload the module. In my case looks like it was causing resume
from sleep to fail altogether.

I added a systemd hook to remove this module when going to sleep and re-adding it
when resuming. This seems to hold good so far.

Regards,
Prateek


Prateek Sadhukhan via arch-general <arch-general at lists.archlinux.org> writes:

> Hello All,
>
> After upgrading to the new kernel I see that my system freezes when
> I try to resume from sleep. This happens intermittently but frequent enough
> to be irritating. I have to reboot the system to recover.
>
> I am running kernel 5.12.7-arch1-1
>
> The issue was not seen with kernel 5.11.
>
> I am running arch on btrfs and I suspect it is a btrfs issue somehow. When I
> check dmesg (journactl --dmesg --boot -1) I see that it always ends with the
> following two lines when the issue is seen.
>
> May 29 07:12:40 matrix kernel: PM: suspend entry (deep)
> May 29 07:12:40 matrix kernel: Filesystems sync: 0.025 seconds
>
> I wanted to know how do I attempt to debug this issue?
>
> Regards,
> Prateek