linux-kernel - Re: regression, 5.19.0-rc1 not powering off when hibernated

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Message-ID: <YqTPlGM9KQ0FqHdc@llamedos.localdomain>
Date:   Sat, 11 Jun 2022 18:23:32 +0100
From:   Ken Moffat <zarniwhoop@...world.com>
To:     Thorsten Leemhuis <regressions@...mhuis.info>
Cc:     linux-kernel@...r.kernel.org,
        "regressions@...ts.linux.dev" <regressions@...ts.linux.dev>,
        Linux PM <linux-pm@...r.kernel.org>,
        Pavel Machek <pavel@....cz>,
        "Rafael J. Wysocki" <rafael@...nel.org>
Subject: Re: regression, 5.19.0-rc1 not powering off when hibernated

On Sat, Jun 11, 2022 at 03:53:44PM +0200, Thorsten Leemhuis wrote:
> Hi, this is your Linux kernel regression tracker.
> 
> CCing the regression mailing list, as it should be in the loop for all
> regressions, as explained here:
> https://www.kernel.org/doc/html/latest/admin-guide/reporting-issues.html
> Also CCing the hibernation maintainers and Linux-pm.
> 
> On 09.06.22 01:55, Ken Moffat wrote:
> > Up to 5.18.0 hibernation has worked ok on my ryzen 5 3400G : screen
> > blanks, disk activity for the write to swap, screen briefly has a
> > trashed display, machine powers off.  When powering up from
> > hibernation, after the saved files are loaded X starts with a
> > briefly trashed display before my desktop reappears.
> > 
> > But with 5.19.0-rc1 the screen is blank throughtout the hibernation,
> > and briefly when restoring (no complaint about that), but when
> > hibernating it no longer powers off and I have to hold the on/off
> > switch to power off.
> > 
> > Is this a known problem ?
> 
> Thanks for the report. Maybe the hibernation maintainers might know, but
> often issues like this are caused by other things like drivers. If they
> don#t have a idea, you likely need to do a bisection to get down to the
> change that introduced this regressions.
> 
> Anyway: To be sure below issue doesn't fall through the cracks
> unnoticed, I'm adding it to regzbot, my Linux kernel regression tracking
> bot:
> 
> #regzbot ^introduced v5.18..v5.19-rc1
> #regzbot title hibernate: Not powering off when hibernated
> #regzbot ignore-activity
> 
> This isn't a regression? This issue or a fix for it are already
> discussed somewhere else? It was fixed already? You want to clarify when
> the regression started to happen? Or point out I got the title or
> something else totally wrong? Then just reply -- ideally with also
> telling regzbot about it, as explained here:
> https://linux-regtracking.leemhuis.info/tracked-regression/
> 
> Reminder for developers: When fixing the issue, add 'Link:' tags
> pointing to the report (the mail this one replied to), as the kernel's
> documentation call for; above page explains why this is important for
> tracked regressions.
> 
> Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat)
> 
> P.S.: As the Linux kernel's regression tracker I deal with a lot of
> reports and sometimes miss something important when writing mails like
> this. If that's the case here, don't hesitate to tell me in a public
> reply, it's in everyone's interest to set the public record straight.

Thanks.  I've started to bisect, but I've got a lot else on and it
might be a few days before I get a result.  All I know so far is
that whatever got rid of the garbled screens was fine, and the
problem seems to have arisen in the last 800+ commits for 5.19-rc1.

ĸen
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