Computer freezes on resume (after lock or suspend)

[flo5783]

Complete freeze on resume (after lock or suspend), excepted that keyboard lights are responsive (e.g. NumLock is operational).
No tty available (e.g. Ctrl+Alt+F6 does nothing).

Sometimes the freeze lasts for 2-3 minutes, sometimes more and thus I need to force a manual power-off.

I suspect gnome-shell to be the culprit here, since it often appears a few minutes later in a "Ubuntu crash" popup.
I have this file: /var/crash/_usr_bin_gnome-shell.1000.crash ...but it's 312 MB which seems too large to upload here. So here it is:
https://drive.google.com/file/d/1lmKjaqNhjNBHG1q9ef4COvJWtq2AYmDD/view?usp=sharing

Bug similar to https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1730540 ?

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: xorg 1:7.7+19ubuntu7
ProcVersionSignature: Ubuntu 4.15.0-23.25-generic 4.15.18
Uname: Linux 4.15.0-23-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.2
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Tue Jun 26 15:45:34 2018
DistUpgraded: Fresh install
DistroCodename: bionic
DistroVariant: ubuntu
DkmsStatus:
 virtualbox, 5.2.10, 4.15.0-22-generic, x86_64: installed
 virtualbox, 5.2.10, 4.15.0-23-generic, x86_64: installed
ExtraDebuggingInterest: Yes
GpuHangFrequency: Several times a week
GpuHangReproducibility: Occurs more often under certain circumstances
GpuHangStarted: Immediately after installing this version of Ubuntu
GraphicsCard:
 Intel Corporation UHD Graphics 620 [8086:5917] (rev 07) (prog-if 00 [VGA controller])
   Subsystem: Lenovo UHD Graphics 620 [17aa:225b]
   Subsystem: Lenovo GP108GL [Quadro P500] [17aa:225b]
InstallationDate: Installed on 2018-06-02 (24 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
MachineType: LENOVO 20LBCTO1WW
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_CA.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-23-generic root=UUID=3a2ba9fd-08e3-4465-94d4-aae3e625c203 ro quiet splash vt.handoff=1
SourcePackage: xorg
Symptom: display
Title: Xorg freeze
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 03/15/2018
dmi.bios.vendor: LENOVO
dmi.bios.version: N27ET24W (1.10 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20LBCTO1WW
dmi.board.vendor: LENOVO
dmi.board.version: SDK0J40697 WIN
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.modalias: dmi:bvnLENOVO:bvrN27ET24W(1.10):bd03/15/2018:svnLENOVO:pn20LBCTO1WW:pvrThinkPadP52s:rvnLENOVO:rn20LBCTO1WW:rvrSDK0J40697WIN:cvnLENOVO:ct10:cvrNone:
dmi.product.family: ThinkPad P52s
dmi.product.name: 20LBCTO1WW
dmi.product.version: ThinkPad P52s
dmi.sys.vendor: LENOVO
version.compiz: compiz N/A
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.xserver-xorg-core: xserver-xorg-core 2:1.19.6-1ubuntu4
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
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

[Daniel van Vugt (vanvugt)]

I can't fully read your crash file but can see enough to tell that your gnome-shell crashed in libgtop-2.0.so.11, which means that bug is in an extension you have installed. Likely one of the "system monitor" extensions caused that crash:

GsettingsChanges:
 b'org.gnome.shell' b'enabled-extensions' b"['<email address hidden>', '<email address hidden>', '<email address hidden>', '<email address hidden>', '<email address hidden>', '<email address hidden>', '<email address hidden>', '<email address hidden>']"

So this is a bug in: gnome-shell-extension-system-monitor (or similar)
Please uninstall the system monitoring extensions and any others you don't absolutely need.

Next time you have a crash file please try reporting it by running:
  ubuntu-bug YOURFILE.crash
And if that doesn't work then try some of the steps here:
  https://wiki.ubuntu.com/Bugs/Responses#Missing_a_crash_report_or_having_a_.crash_attachment

Another thing worth noting is that your nouveau kernel driver is crashing occasionally, which doesn't help. Try installing package 'nvidia-driver-390' for a more stable system. Or if you don't need the Nvidia GPU at all then consider disabling it in your BIOS.

[flo5783 (florent-bouchy)]

Ok thanks, I disabled system monitor extension through Tweaks and it seems to be stable now.

I'm installing "nvidia-driver-390" too, thanks.

I tried to upload my 312 MB crash file via ubuntu-bug but it never completed (even with a very fast internet connection).

[Daniel van Vugt (vanvugt)]

If you can't upload the crash file then please attach a log file from the system (yes, with the bug active) if you can. To do this, you would need to:

  1. Re-enable the system-monitor extension
  2. Wait for the freeze
  3. Reboot
  4. Collect the system log from the previous boot:
       journalctl -b-1 > previousboot.txt
     and send previousboot.txt to us.

[Launchpad Janitor (janitor)]

[Expired for gnome-shell-extension-system-monitor (Ubuntu) because there has been no activity for 60 days.]