The system was upgraded from 14.04 to 16.04. There were no glitches during the upgrade process. After the reboot, Unity automatically defined the problem (warning dialog-box), followed with an automatic direction to the Launchpad.net url for writing down this information.
ProblemType: Crash
DistroRelease: Ubuntu 16.04
Package: unity-settings-daemon 15.04.1+16.04.20160209-0ubuntu1
ProcVersionSignature: Ubuntu 4.4.0-18.34-generic 4.4.6
Uname: Linux 4.4.0-18-generic x86_64
ApportVersion: 2.20.1-0ubuntu1
Architecture: amd64
CrashCounter: 1
Date: Wed Apr 13 17:34:39 2016
ExecutablePath: /usr/lib/unity-settings-daemon/check_gl_texture_size
InstallationDate: Installed on 2014-06-23 (659 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
ProcCmdline: /usr/lib/unity-settings-daemon/check_gl_texture_size
ProcEnviron:
SegvAnalysis:
Segfault happened at: 0x7f5f16d7b4a0: mov 0x18(%rbx),%rax
PC (0x7f5f16d7b4a0) ok
source "0x18(%rbx)" (0x00000018) not located in a known VMA region (needed readable region)!
destination "%rax" ok
Stack memory exhausted (SP below stack segment)
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: unity-settings-daemon
StacktraceTop:
?? () from /usr/lib/x86_64-linux-gnu/VBoxOGLpackspu.so
?? () from /usr/lib/x86_64-linux-gnu/dri/vboxvideo_dri.so
?? () from /usr/lib/x86_64-linux-gnu/dri/vboxvideo_dri.so
?? () from /usr/lib/x86_64-linux-gnu/dri/vboxvideo_dri.so
start_thread (arg=0x7f5f15b7c700) at pthread_create.c:333
Title: check_gl_texture_size crashed with SIGSEGV in start_thread()
UpgradeStatus: Upgraded to xenial on 2016-04-13 (0 days ago)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
StacktraceSource:
#0 0x00007f5f16d7b4a0 in ?? ()
#1 0x0000000002697680 in ?? ()
#2 0x0000000002697f60 in ?? ()
#3 0x00007f5f15b7bea0 in ?? ()
#4 0x00007f5f1746d9a5 in stubSyncThreadProc () from /tmp/apport_
StacktraceTop:
?? ()
?? ()
?? ()
?? ()
stubSyncThreadProc () from /tmp/apport_