Black screen when resuming laptop from sleep

[Matt Spaulding]

To reproduce:

1. Close laptop lid and sleep it overnight
2. Open lid and see lock screen
3. Enter password at lock screen
4. Get a black screen with on the cursor

Expected results:

See the Elementary desktop

Hardware: Lenovo Thinkpad x220

ProblemType: Bug
DistroRelease: elementary 0.4
Package: elementary-desktop 1.414+469+r1~daily~ubuntu0.4.1 [origin: LP-PPA-elementary-os-daily]
ProcVersionSignature: Ubuntu 4.4.0-36.55-generic 4.4.16
Uname: Linux 4.4.0-36-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
CrashDB: elementary_meta
CurrentDesktop: Pantheon
Date: Thu Sep 8 20:44:28 2016
InstallationDate: Installed on 2016-09-08 (0 days ago)
InstallationMedia: elementary OS 0.4 "Loki" - Daily amd64 (20160716)
ProcEnviron:
 LANGUAGE=en_US
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: elementary-meta
SuspiciousXErrors:

ThirdParty: True
UpgradeStatus: No upgrade log present (probably fresh install)

[ojsncjdsnck (kontskt-deactivatedaccount)]

same here with Lenovo Thinkpad T420

[Matt Spaulding (madsa)]

There are some upstream bugs related to this:

https://bugs.freedesktop.org/show_bug.cgi?id=96441
https://bugs.freedesktop.org/show_bug.cgi?id=93509
https://bugs.freedesktop.org/show_bug.cgi?id=93782

[Matt Spaulding (madsa)]

Built a custom linux 4.8-rc8 kernel and I have not seen this problem since. This is most likely a kernel bug.

[Brad Figg (brad-figg)]

This bug is missing log files that will aid in diagnosing the problem. From a terminal window please run:

apport-collect 1621719

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

[Matt Spaulding (madsa)]

The attached JournalErrors.txt file shows the kernel call trace for the error that occurs.

[Chiron (chiron)]

Evidently the bug I filed is a duplicate of this (1634242), also with T420s laptops. But I don't even have to put them machines to sleep or even wait. All I have to do is lock the laptop and it crashes.

FYI, I don't get this with Ubuntu, Ubuntu Gnome, or any other derivatives. I tried a newer kernel with the same effect.

[Stego (stegomon)]

Confirming this bug on elementary OS 0.4 (Loki). I am unfortunately not able to apport-collect, but would gladly contribute to the solution by providing additional info.

[Stego (stegomon)]

I also can confirm that the only thing needed to reproduce this bug is, as chiron wrote, to lock the laptop and try to login, although it doesn't happen every time.

[Cody (stillcms)]

I have the same problem, I believe. I am running Loki on a Toshiba Satelite L755-s5112.

When logging in after suspend or sleep it will freeze and or go to black screen. No matter how long I wait it doesn't come out of it.

[Chiron (chiron)]

No one at Elementary seems to care. They classified it as an "Ubuntu" bug
except I dont have this problem with Ubuntu of any flavor, or any other
distribution I've tried.

On Nov 9, 2016 9:42 PM, "Cody" <email address hidden> wrote:

> I have the same problem, I believe. I am running Loki on a Toshiba
> Satelite L755-s5112.
>
> When logging in after suspend or sleep it will freeze and or go to black
> screen. No matter how long I wait it doesn't come out of it.
>
> --
> You received this bug notification because you are subscribed to a
> duplicate bug report (1634242).
> https://bugs.launchpad.net/bugs/1621719
>
> Title:
> Black screen when resuming laptop from sleep
>
> Status in elementary OS:
> Confirmed
> Status in linux package in Ubuntu:
> Confirmed
>
> Bug description:
> To reproduce:
>
> 1. Close laptop lid and sleep it overnight
> 2. Open lid and see lock screen
> 3. Enter password at lock screen
> 4. Get a black screen with on the cursor
>
> Expected results:
>
> See the Elementary desktop
>
> Hardware: Lenovo Thinkpad x220
>
> ProblemType: Bug
> DistroRelease: elementary 0.4
> Package: elementary-desktop 1.414+469+r1~daily~ubuntu0.4.1 [origin:
> LP-PPA-elementary-os-daily]
> ProcVersionSignature: Ubuntu 4.4.0-36.55-generic 4.4.16
> Uname: Linux 4.4.0-36-generic x86_64
> NonfreeKernelModules: wl
> ApportVersion: 2.20.1-0ubuntu2.1
> Architecture: amd64
> CrashDB: elementary_meta
> CurrentDesktop: Pantheon
> Date: Thu Sep 8 20:44:28 2016
> InstallationDate: Installed on 2016-09-08 (0 days ago)
> InstallationMedia: elementary OS 0.4 "Loki" - Daily amd64 (20160716)
> ProcEnviron:
> LANGUAGE=en_US
> PATH=(custom, no user)
> XDG_RUNTIME_DIR=<set>
> LANG=en_US.UTF-8
> SHELL=/bin/bash
> SourcePackage: elementary-meta
> SuspiciousXErrors:
>
> ThirdParty: True
> UpgradeStatus: No upgrade log present (probably fresh install)
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/elementaryos/+bug/1621719/+subscriptions
>

[Zisu Andrei (matzipan)]

Hi Chiron,

Matt is an elementary volunteer. His findings show that the issue has been fixed in newer kernel versions. The fact that you are not seeing it in other distros might simply be luck.

[TJ (tj)]

Based on the original report's JournalErrors.txt showing:

"vblank wait timed out on crtc 0"

marking this as a duplicate of the master bug #1542939