Public bug reported:
The observable symptom is that if I go away and let the computer go
either to display sleep or suspend, when I come back and try to wake it
up again, I find myself, after sliding up the lock screen, at the gdm
login screen. I'm logged out, and logging in gives me a fresh new
session. Anything I had open in the previous session is lost. (I'm
getting used to saving stuff before I step away from the computer!)
The only trace I've been able to find is that in /var/log/syslog I see a
line like:
Sep 28 14:38:44 fleetfoot kernel: [10621.432586] gnome-shell[1863]:
segfault at 2c ip 00007f6200e82434 sp 00007ffc46f981c8 error 4 in
libmutter-1.so.0.0.0[7f6200de4000+140000]
This happens at the time of attempted wake, not the time of going to
sleep. It's preceded by a lot of activity from gdm-x-session that I'm
not sure is indicating any error, just the process of waking up. I will
attach a portion of syslog surrounding the whole event in the hope it
helps. (In fact attaching the whole current syslog file - it has two
such events occuring in it, first display sleep/wake at 09:02 this
morning, and secondly (because I was experimenting) a suspend-wake at
14:38 this afternoon.
This is only affecting Xorg sessions, and may possibly only be affecting
where nvidia is in use, I'm not sure about that. But the fact it occurs
on display wake alone, not needing the system itself to have suspended
(I was trying suspend to see if it *avoided* the problem, which it
doesn't), does point the finger in that direction I guess. But
ultimately I'm guessing it's gnome-shell itself segfaulting that's
causing the login session to end?
Not observed on my Wayland system.
This is not new as of the current version of gnome-shell but I think it
is relatively recent. Now my hackintosh partition is wrecked by a failed
upgrade to High Sierra I'm using my Linux system more in earnest than
before, so I'm hitting this often enough for it to provoke a bug report
(and much of the time, to just turn all auto suspend/display-sleep off
and instead shut down the computer when I'm leaving it for any length of
time).
The ubuntu bug reporter is not picking this up by itself, so I presume a
crash report of the sort that uses is not being saved.
ProblemType: Bug
DistroRelease: Ubuntu 17.10
Package: gnome-shell 3.26.0-0ubuntu2
ProcVersionSignature: Ubuntu 4.13.0-12.13-generic 4.13.3
Uname: Linux 4.13.0-12-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
ApportVersion: 2.20.7-0ubuntu1
Architecture: amd64
CurrentDesktop: GNOME
Date: Thu Sep 28 14:41:07 2017
DisplayManager: gdm3
InstallationDate: Installed on 2017-07-30 (59 days ago)
InstallationMedia: Ubuntu-GNOME 17.04 "Zesty Zapus" - Release amd64 (20170412)
SourcePackage: gnome-shell
UpgradeStatus: Upgraded to artful on 2017-08-22 (37 days ago)
** Affects: gnome-shell (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug artful
** Attachment added: "syslog"
https://bugs.launchpad.net/bugs/1720149/+attachment/4958094/+files/syslog
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https://bugs.launchpad.net/bugs/1720149
Title:
gnome-shell segv on wake from display or system sleep
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