linux-kernel - Re: [REGRESSION 4.19-rc2] sometimes hangs with black screen when resuming from suspend or hibernation (was: Re: Linux 4.19-rc2)

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Date:   Fri, 26 Oct 2018 17:43:40 +0200
From:   Martin Steigerwald <martin@...htvoll.de>
To:     Martin Steigerwald <martin@...htvoll.de>
Cc:     Linus Torvalds <torvalds@...ux-foundation.org>,
        Rafael Wysocki <rafael@...nel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [REGRESSION 4.19-rc2] sometimes hangs with black screen when resuming from suspend or hibernation (was: Re: Linux 4.19-rc2)

This regression is gone with 4.19-rc8.

Thanks,
Martin

Martin Steigerwald - 11.09.18, 09:53:
[…]
> Linus Torvalds - 02.09.18, 23:45:
> > As usual, the rc2 release is pretty small. People are taking a
> 
> With 4.19-rc2 this ThinkPad T520 with i5 Sandybrdige sometimes hangs
> with black screen when resuming from suspend or hibernation.  With
> 4.18.1 it did not. Of course there have been userspace related updates
> that could be related.
> 
> I currently have no time to dig into this and on this production
> laptop I generally do not do bisects between major kernel releases.
> So currently I only answer questions that do not require much time to
> answer.
> 
> For now I switched back to 4.18. If that is stable – and thus likely
> no userspace component is related –, I go with 4.19-rc3 or whatever
> is most recent version to see if the issue has been fixed already.
> 
> % inxi -z -b -G
> System:    Host: […] Kernel: 4.18.1-tp520-btrfstrim x86_64 bits: 64
> Desktop: KDE Plasma 5.13.5
>            Distro: Debian GNU/Linux buster/sid
> Machine:   Type: Laptop System: LENOVO product: 42433WG v: ThinkPad
> T520 serial: <filter>
>            Mobo: LENOVO model: 42433WG serial: <filter> UEFI [Legacy]:
> LENOVO v: 8AET69WW (1.49 )
>            date: 06/14/2018
> […]
> CPU:       Dual Core: Intel Core i5-2520M type: MT MCP speed: 2990 MHz
> min/max: 800/3200 MHz
> Graphics:  Device-1: Intel 2nd Generation Core Processor Family
> Integrated Graphics driver: i915 v: kernel
>            Display: x11 server: X.Org 1.20.1 driver: modesetting
> resolution: 1920x1080~60Hz
>            OpenGL: renderer: Mesa DRI Intel Sandybridge Mobile v: 3.3
> Mesa 18.1.7
> […]
> Info:      Processes: 322 Uptime: 16m Memory: 15.45 GiB used: 3.12 GiB
> (20.2%) Shell: zsh inxi: 3.0.22
> 
> Thanks,
> Martin
> 
> > breather after the merge window, and it takes a bit of time for bug
> > reports to start coming in and get identified.  Plus people were
> > probably still on vacation (particularly Europe), and some people
> > were at Open Source Summit NA last week too. Having a calm week was
> > good.
> > 
> > Regardless of the reason, it's pretty quiet/ The bulk of it is
> > drivers (network and gpu stand out), with the rest being a random
> > collection all over (arch/x86 and generic networking stands out,
> > but there's misc stuff all over).
> > 
> > Go out and test.
> > 
> >              Linus
> > 
> > ---
[…]
-- 
Martin