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Bug#1100153: linux: hangs on resume from suspend or hibernation with 6.12-6.13 on ThinkPad X1 Carbon Gen 10



On 2025-03-12 at 06:34:43, Salvatore Bonaccorso wrote:
> What is that range? Could you next bisect. Assuming we get even a
> result within one stable series, this would be great, because then
> next I would like to ask if you can bisect the respective upstream
> changes to the breaking commits (still works if the issue is
> introduced on major version change, then bisect might take longer).

I've done some testing and I've found that 6.10.12 is the last good
version and 6.11-rc4 is the first bad version.  The former resumes
correctly from suspend and hibernate and the latter fails in both cases.
I also tested suspend on 6.11.2 and 6.11.10 and they also failed.

In all cases, to test suspend, I booted the machine on the kernel in
question, logged in, waited for Firefox (which is loaded as part of my
session) to finish loading the snapshot.debian.org page, then suspended
by closing the lid.  To test hibernate, I went to the MATE shutdown
menu and chose "Hibernate" instead of closing the lid.  Resuming from
hibernation was done by booting the default kernel (which is presently
6.13.6 from experimental), although of course that kernel is overwritten
by the one from the hibernation.

One interesting detail which may or may not be relevant is that suspend
on 6.11 takes much longer, around 5 to 10 seconds before the light on
the lid begins to pulse.  It is much faster on 6.10.12.

I'm including all of the kernel logs from my tests today (and from
intermediate boots to install new kernels) as a gzipped attachment
(firewall logs excluded for privacy and because they aren't
relevant to this matter).
-- 
brian m. carlson (they/them or he/him)
Toronto, Ontario, CA

Attachment: kern.log.gz
Description: application/gzip

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Description: PGP signature


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