Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: gnome-shell (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1723615
Title:
gnome-shell crashed with SIGSEGV in meta_monitor_mode_get_resolution()
Status in gnome-shell package in Ubuntu:
Confirmed
Bug description:
This happened while I was away from the computer. By the timing it
should have been well after the time it should have gone *into*
displaysleep, and was also about 45min before I returned, so certainly
wasn't the wake-up process either.
What I observed when I did return: My 4K monitor didn't wake up
(that's a known problem with this monitor, Dell P2715Q), the second
monitor (Dell U2711) did wake up, showing the login screen.
So although I've considered my Dell 4K problem a problem with waking
up, I wonder if it might be actually a problem with it apparently
going away completely after a longer displaysleep (it's usually fine
if I just do a short sleep of a minute or two).
Another possibility is the cat stepped on the keyboard and thus
triggered an attempted display-wake. But that would actually be out of
character (for the cat).
Either way is a bug because the session should survive monitor
shenanigans... :-)
ProblemType: Crash
DistroRelease: Ubuntu 17.10
Package: gnome-shell 3.26.1-0ubuntu3
ProcVersionSignature: Ubuntu 4.13.0-16.19-generic 4.13.4
Uname: Linux 4.13.0-16-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
ApportVersion: 2.20.7-0ubuntu3
Architecture: amd64
CurrentDesktop: GNOME-Greeter:GNOME
Date: Sat Oct 14 15:39:50 2017
DisplayManager: gdm3
ExecutablePath: /usr/bin/gnome-shell
GsettingsChanges:
InstallationDate: Installed on 2017-07-30 (75 days ago)
InstallationMedia: Ubuntu-GNOME 17.04 "Zesty Zapus" - Release amd64 (20170412)
ProcCmdline: /usr/bin/gnome-shell
ProcEnviron:
LANGUAGE=en_GB:en
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_GB.UTF-8
SHELL=/bin/false
SegvAnalysis:
Segfault happened at: 0x7fae20ab44a0 <meta_monitor_mode_get_resolution>:
mov 0x8(%rdi),%eax
PC (0x7fae20ab44a0) ok
source "0x8(%rdi)" (0x00000008) not located in a known VMA region (needed
readable region)!
destination "%eax" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: gnome-shell
StacktraceTop:
meta_monitor_mode_get_resolution () at
/usr/lib/x86_64-linux-gnu/libmutter-1.so.0
meta_monitor_calculate_mode_scale () at
/usr/lib/x86_64-linux-gnu/libmutter-1.so.0
meta_monitor_manager_update_logical_state_derived () at
/usr/lib/x86_64-linux-gnu/libmutter-1.so.0
meta_monitor_manager_rebuild_derived () at
/usr/lib/x86_64-linux-gnu/libmutter-1.so.0
meta_monitor_manager_xrandr_handle_xevent () at
/usr/lib/x86_64-linux-gnu/libmutter-1.so.0
Title: gnome-shell crashed with SIGSEGV in meta_monitor_mode_get_resolution()
UpgradeStatus: Upgraded to artful on 2017-08-22 (53 days ago)
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