| 2013-03-19 20:22:15 |
Eliah Kagan |
description |
I logged into a Unity session on a Quantal i386 system with old hardware--an Nvidia GeForce 5200 graphics card. The screen flickered yellowish, then went to black. There was no visible interface. I restarted lightdm to get back to the graphical login screen. Soon after, I found that unity-greeter had crashed. I'm guessing that this is secondary to the video incompatibility rather than the cause of it, but it is specifically the crash in unity-greeter that I'm reporting here.
ProblemType: Crash
DistroRelease: Ubuntu 12.10
Package: unity-greeter 12.10.4-0ubuntu5.1
ProcVersionSignature: Ubuntu 3.5.0-26.42-generic 3.5.7.6
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/unity-greeter
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/unity-greeter
ProcEnviron:
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
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/i386-linux-gnu/libgtk-3.so.0
?? ()
?? ()
?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
Title: unity-greeter crashed with SIGSEGV in g_main_context_dispatch()
UpgradeStatus: Upgraded to quantal on 2013-03-19 (0 days ago)
UserGroups: |
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
ProcVersionSignature: Ubuntu 3.5.0-26.42-generic 3.5.7.6
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/unity-greeter
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/unity-greeter
ProcEnviron:
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
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/i386-linux-gnu/libgtk-3.so.0
?? ()
?? ()
?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
Title: unity-greeter crashed with SIGSEGV in g_main_context_dispatch()
UpgradeStatus: Upgraded to quantal on 2013-03-19 (0 days ago)
UserGroups: |
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