Public bug reported:
{{{
[13704.632087] gnome-shell[9051]: segfault at 82 ip 00007f3e7e900de2 sp
00007fff6078c200 error 4 in libgobject-2.0.so.0.5400.1[7f3e7e8cb000+52000]
}}}
Stack trace is roughly:
* g_type_check_instance_cast() at libgobject-2.0.so.0
* st_label_set_text() at libst-1.0.so
...
My setup:
* dual monitors
* multiple local users
* often 2x users logged in at same time
* flip between them using PTY (CTRL+ALT+ F2, F3, etc.)
* CTRL+ALT+F1 gets us to the gdm login screen (user selection)
What happens:
* eventually either by timeout (or after suspend), or manual lock screen
* user hits CTRL+ALT+F2,3,X, to access their PTY
* screen may or may not be locked; (user logs in)
* user hits "ALT+F2", and types "r" + <ENTER> (gnome-shell --replace)
Reproducibility:
* happened a few times since upgrade to Ubuntu 17.10
* happened immediately after running "r"
Issue Analysis:
* none - need guidance on how to debug/isolate next time it happens
---
System Information:
$ lsb_release -rd
Description: Ubuntu 17.10
Release: 17.10
$ uname -a
Linux fermmy 4.13.0-31-generic #34-Ubuntu SMP Fri Jan 19 16:34:46 UTC 2018
x86_64 x86_64 x86_64 GNU/Linux
$ apt-cache policy gdm3
gdm3:
Installed: 3.26.1-3ubuntu3
Candidate: 3.26.1-3ubuntu3
Version table:
*** 3.26.1-3ubuntu3 500
500 http://ca.archive.ubuntu.com/ubuntu artful-updates/main amd64
Packages
100 /var/lib/dpkg/status
3.26.1-3ubuntu2 500
500 http://ca.archive.ubuntu.com/ubuntu artful/main amd64 Packages
$ apt-cache policy gnome-shell
gnome-shell:
Installed: 3.24.2-0ubuntu0.1
Candidate: 3.24.2-0ubuntu0.1
Version table:
*** 3.24.2-0ubuntu0.1 500
500 http://ca.archive.ubuntu.com/ubuntu zesty-updates/universe amd64
Packages
100 /var/lib/dpkg/status
3.24.0-0ubuntu2 500
500 http://ca.archive.ubuntu.com/ubuntu zesty/universe amd64 Packages
** Affects: gdm3 (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1744849
Title:
gnome-shell segfault in libgobject-2.0 g_type_check_instance_cast
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