Xorg crashes after system sleep / wakeup

[Ákos Maróy]

after putting the system to sleep, and waking it up, Xorg crashes, and I'm lead to a new greeter / login screen. naturally the state of my desktop is lost in this process, and I'm stuck with a new login with no apps running.

the error reporter says:

Error: [Errno 21] is a directory: '/proc/driver/nvidia/gpus/0000:01:00.0/'

which is indeed true:

$ ls /proc/driver/nvidia/gpus/0000\:01\:00.0/
information registry

the same system worked fine with ubuntu 17.10

this is a follow-up filing for bug 1769819, after X server core dumping has been enabled:

$ cat /etc/gdm3/custom.conf
...
[debug]
# Uncomment the line below to turn on debugging
# More verbose logs
# Additionally lets the X server dump core if it crashes
Enable=true

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: xserver-xorg-core 2:1.19.6-1ubuntu4
ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17
Uname: Linux 4.15.0-20-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
.proc.driver.nvidia.gpus.0000.01.00.0: Error: [Errno 21] Is a directory: '/proc/driver/nvidia/gpus/0000:01:00.0'
.proc.driver.nvidia.registry: Binary: ""
.proc.driver.nvidia.version:
 NVRM version: NVIDIA UNIX x86_64 Kernel Module 390.48 Thu Mar 22 00:42:57 PDT 2018
 GCC version: gcc version 7.3.0 (Ubuntu 7.3.0-16ubuntu3)
.proc.driver.nvidia.warnings.fbdev:
 Your system is not currently configured to drive a VGA console
 on the primary VGA device. The NVIDIA Linux graphics driver
 requires the use of a text-mode VGA console. Use of other console
 drivers including, but not limited to, vesafb, may result in
 corruption and stability problems, and is not supported.
.tmp.unity_support_test.0:

ApportVersion: 2.20.9-0ubuntu7
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Thu May 10 07:31:41 2018
DistUpgraded: 2018-05-04 09:38:04,874 DEBUG Running PostInstallScript: './xorg_fix_proprietary.py'
DistroCodename: bionic
DistroVariant: ubuntu
DkmsStatus:
 nvidia, 390.48, 4.13.0-39-generic, x86_64: installed
 nvidia, 390.48, 4.15.0-20-generic, x86_64: installed
EcryptfsInUse: Yes
ExtraDebuggingInterest: Yes
GraphicsCard:
 Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor Integrated Graphics Controller [8086:0412] (rev 06) (prog-if 00 [VGA controller])
   Subsystem: Gigabyte Technology Co., Ltd Xeon E3-1200 v3/4th Gen Core Processor Integrated Graphics Controller [1458:d000]
 NVIDIA Corporation GK104 [GeForce GTX 680] [10de:1180] (rev a1) (prog-if 00 [VGA controller])
   Subsystem: eVga.com. Corp. GK104 [GeForce GTX 680] [3842:3687]
InstallationDate: Installed on 2016-04-03 (766 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
MachineType: Gigabyte Technology Co., Ltd. Z97X-UD5H
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-20-generic root=UUID=e56cb504-229d-4c7a-b16c-b259d05e992b ro noprompt quiet splash vt.handoff=1
SourcePackage: xorg-server
UpgradeStatus: Upgraded to bionic on 2018-05-04 (5 days ago)
dmi.bios.date: 08/03/2015
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: F10
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: Z97X-UD5H
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.board.version: x.x
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrF10:bd08/03/2015:svnGigabyteTechnologyCo.,Ltd.:pnZ97X-UD5H:pvrTobefilledbyO.E.M.:rvnGigabyteTechnologyCo.,Ltd.:rnZ97X-UD5H:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvrToBeFilledByO.E.M.:
dmi.product.family: To be filled by O.E.M.
dmi.product.name: Z97X-UD5H
dmi.product.version: To be filled by O.E.M.
dmi.sys.vendor: Gigabyte Technology Co., Ltd.
version.compiz: compiz 1:0.9.13.1+18.04.20180302-0ubuntu1
version.libdrm2: libdrm2 2.4.91-2
version.libgl1-mesa-dri: libgl1-mesa-dri 18.0.0~rc5-1ubuntu1
version.libgl1-mesa-glx: libgl1-mesa-glx 18.0.0~rc5-1ubuntu1
version.nvidia-graphics-drivers: nvidia-graphics-drivers-* N/A
version.xserver-xorg-core: xserver-xorg-core 2:1.19.6-1ubuntu4
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.5-1ubuntu1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:18.0.1-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20171229-1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.15-2
xserver.bootTime: Tue May 8 17:18:33 2018
xserver.configfile: default
xserver.errors:

xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:

xserver.version: 2:1.19.6-1ubuntu4

[Daniel van Vugt (vanvugt)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. However, your bug report is missing crash details. In order to debug a crash we will need a crash report. To create one, please follow these steps:

1. If you are not running a future development release of Ubuntu then apply the workaround from bug 994921.
2. If you are running the Ubuntu Stable Release you might need to enable apport in /etc/default/apport.
3. If the crash is in Xorg then uncomment this option from /etc/gdm3/custom.conf:
   # Additionally lets the X server dump core if it crashes
   #Enable=true
4. Reboot.
5. Reproduce the crash.
6. Look in /var/crash for crash files and when found, run:
   ubuntu-bug /var/crash/YOURFILE.crash
7. Add a comment here telling us the ID of the new bug that was created in step 6.

Please take care to avoid attaching .crash files to bugs as we are unable to process them as file attachments, and doing so is also a security risk for yourself.

[Tőkés Attila (tokes-atti)]

The same happens to me too. Uploaded a crash report:
https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers/+bug/1775222

[Robert Haschke (rhaschke)]

Same issue here. However, probably that's related to the proprietary nvidia drivers.
No such problems with intel card/drivers.

[Christian Sarrasin (sxc731)]

FWIW, I am experiencing fairly regular X.org crashes at sleep resume with my ThinkPad X1c5 (stock KabyLake Intel HD 620 iGPU) on 18.04 (currently running 4.15.0-36 but has been happening for a while). Never had such issues with 17.10.

This may be related to waking up the laptop hooked to my monitor over a USB-C cable after it was previously used un-docked.