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:   Tue, 30 Oct 2018 07:41:42 +0100
From:   "Rafael J. Wysocki" <rafael@...nel.org>
To:     martin@...htvoll.de
Cc:     Linus Torvalds <torvalds@...ux-foundation.org>,
        "Rafael J. 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)

On Fri, Oct 26, 2018 at 5:49 PM Martin Steigerwald <martin@...htvoll.de> wrote:
>
> This regression is gone with 4.19-rc8.

Thanks for the update!


> 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
>
>