unity-greeter crashed with SIGSEGV in gtk_fixed_move_internal()
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
unity-greeter (Ubuntu) |
New
|
Medium
|
Unassigned |
Bug Description
On a Quantal i386 system, the LightDM login screen quit without warning as I started entering my password. This happened a few times in a row, but it had not happened the previous time I'd run lightdm, and it didn't happen any subsequent times. (I'd recently stopped and restarted the lightdm service, and I did that again to overcome the problem; then the greeter worked and I was able to log in.)
I discovered soon afterwards that unity-greeter had crashed. I presume this corresponds to one of the times lightdm quit as I started to enter my password.
In case it's relevant, I'd previously logged into a Unity session. This system has old hardware--an Nvidia GeForce 5200 graphics card. The screen had flickered yellowish, then went to black. There was no visible interface. I restarted lightdm to get back to the graphical login screen. Please note that this is a description of the events that led me to run "sudo stop lightdm" followed by "sudo start lightdm" the first time, leading to a state where unity-greeter crashed. I'm not sure if the problems I had with Unity itself are relevant, and I understand they are probably not since unity-greeter is not really related to Unity except in that it is themed similarly.
Please note that this bug report is for the unity-greeter crash and *not* for the graphics issue.
ProblemType: Crash
DistroRelease: Ubuntu 12.10
Package: unity-greeter 12.10.4-0ubuntu5.1
ProcVersionSign
Uname: Linux 3.5.0-26-generic i686
ApportVersion: 2.6.1-0ubuntu10
Architecture: i386
Date: Tue Mar 19 15:49:06 2013
ExecutablePath: /usr/sbin/
InstallationDate: Installed on 2005-04-15 (2894 days ago)
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta i386 (20120327.1)
MarkForUpload: True
ProcCmdline: /usr/sbin/
ProcEnviron:
PATH=(custom, no user)
XDG_RUNTIME_
LANG=en_US.UTF-8
SHELL=/bin/false
SegvAnalysis:
Segfault happened at: 0xb73398a0: mov (%edi),%eax
PC (0xb73398a0) ok
source "(%edi)" (0x00000000) not located in a known VMA region (needed readable region)!
destination "%eax" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: unity-greeter
StacktraceTop:
?? () from /usr/lib/
?? ()
?? ()
?? () from /lib/i386-
g_main_
Title: unity-greeter crashed with SIGSEGV in g_main_
UpgradeStatus: Upgraded to quantal on 2013-03-19 (0 days ago)
UserGroups:
description: | updated |
StacktraceTop: move_internal (fixed=0x9033128, child=0x0, x=84, y=-24) at /build/ buildd/ gtk+3.0- 3.6.0/. /gtk/gtkfixed. c:253 list_move_ entry (position= <optimized out>, entry=0x8fa2470, self=0x904b128) at greeter-list.c:1469 list_move_ names (self=self@ entry=0x904b128 ) at greeter-list.c:1574 _gsource_ func (self=self@ entry=0x904b128 ) at greeter-list.c:1486
gtk_fixed_
greeter_
greeter_
___lambda37_ (self=0x904b128) at greeter-list.c:1478
____lambda37_