Might be able to test on the distro built kernels that basically trace
the releases and stable point releases. This should start helping
bracketing the problem a bit better as a starter. But it is going to
take a lot of time, since the issue happens when the machine fails to
get out of hibernation, that is not always, and obvioulsy I need to try
avoiding this situation as much as possible.
Incidentally, the machine seems to hibernate-resume just fine. It is
when I suspend-then-hibernate that I get the failures.
Before contacting the network driver authors, I just wanted to query
whether the issue is likely in it or in the power-management or pcie
subsystems.
Thanks,
Sergio
On 20/03/2025 00:54, Greg KH wrote:
On Wed, Mar 19, 2025 at 08:38:52PM +0100, Sergio Callegari wrote:
There is a nasty regression wrt mt7921e in the last LTS series (6.12). If
your computer crashes or fails to get out of hibernation, then at the next
boot the mt7921e wifi does not work, with dmesg reporting that it is unable
to change power state from d3cold to d0.
The issue is nasty, because rebooting won't help.
Can you do a 'git bisect' to track down the issue? Also, maybe letting
the network driver authors know about this would be good.
thanks,
greg k-h
