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@xxxxxxxxxxxxxxxxxxx> 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
