compiz crashed with SIGSEGV in pointerMods()

[Carlo Bottai]

Binary package hint: compiz

I've tested the new Ubuntu 11.04 but Unity seem to be not supported by my computer. I've tryed to use a classic user session but no panel appears and compiz crashes.

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: compiz-core 1:0.9.2.1+glibmainloop4-0ubuntu8
ProcVersionSignature: Ubuntu 2.6.38-1.28-generic 2.6.38-rc2
Uname: Linux 2.6.38-1-generic i686
Architecture: i386
DRM.card0.VGA.1:
 status: connected
 enabled: enabled
 dpms: On
 modes: 1024x768 1280x1024 1024x768 1024x768 1024x768 1024x768 800x600 800x600 800x600 800x600 800x600 640x480 640x480 640x480 640x480
 edid-base64: AP///////wAS5aNwAQEBASYLAQJoIRl46gCyoFdJmyYQSE8v3gCBgGFZRVkxWQEBAQEBAQEB5CQAYEEAKDAwYBMASvoQAAAeAAAA/QAyoB5GCQAKICAgICAgAAAA/wAwMDAwMDAwMDAwCiAgAAAA/ABQblAgTW9uaXRvcgogAO0=
Date: Wed Feb 2 09:29:54 2011
Disassembly: => 0x0: Cannot access memory at address 0x0
DistUpgraded: Fresh install
DistroCodename: natty
DistroVariant: ubuntu
ExecutablePath: /usr/bin/compiz
GdmLog1: Not present
GdmLog2: Not present
GraphicsCard: Subsystem: Yuan Yuan Enterprise Co., Ltd. YUAN SMARTVGA Radeon 9200 [12ab:5961]
LiveMediaBuild: Ubuntu 11.04 "Natty Narwhal" - Alpha i386 (20110201.1)
ProcCmdline: /usr/bin/compiz
ProcEnviron:
 LANGUAGE=it_IT.UTF-8:it:en_GB:en
 LANG=it_IT.UTF-8
 LC_MESSAGES=it_IT.utf8
 SHELL=/bin/bash
ProcKernelCmdLine: noprompt cdrom-detect/try-usb=true persistent file=/cdrom/preseed/hostname.seed boot=casper initrd=/casper/initrd.lz quiet splash -- debian-installer/language=it console-setup/layoutcode?=it
SegvAnalysis:
 Segfault happened at: 0x0: Cannot access memory at address 0x0
 PC (0x00000000) not located in a known VMA region (needed executable region)!
SegvReason: executing NULL VMA
Signal: 11
SourcePackage: compiz
StacktraceTop:
 ?? ()
 pointerMods ()
 ?? ()
 ?? ()
Title: compiz crashed with SIGSEGV in pointerMods()
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
XsessionErrors: (nautilus:4530): GConf-CRITICAL **: gconf_value_free: assertion `value != NULL' failed
dmi.bios.date: 05/30/2003
dmi.bios.vendor: Phoenix Technologies, LTD
dmi.bios.version: 6.00 PG
dmi.board.name: FS51
dmi.board.vendor: Shuttle Inc
dmi.chassis.type: 3
dmi.modalias: dmi:bvnPhoenixTechnologies,LTD:bvr6.00PG:bd05/30/2003:svn:pn:pvr:rvnShuttleInc:rnFS51:rvr:cvn:ct3:cvr:
version.libdrm2: libdrm2 2.4.23-1ubuntu3
version.libgl1-mesa-glx: libgl1-mesa-glx 7.10-1ubuntu1
version.xserver-xorg: xserver-xorg 1:7.6~3ubuntu1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.13.2+git20110124.fadee040-0ubuntu4
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.14.0-1ubuntu5
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110107+b795ca6e-0ubuntu4

[Apport retracing service (apport)]

Stacktrace:
 #0 0x00000000 in ?? ()
 No symbol table info available.
 #1 0x08f5fd90 in ?? ()
 No symbol table info available.
StacktraceTop:
 ?? ()
 ?? ()

[Carlo Bottai (carlo-bottai)]

I've removed the ATI RADEON 9200 video card and all seem to be better. No graphic acceleration works but the system boots properly.

[Carlo Bottai (carlo-bottai)]

Another way to solve the problem is to create a Launcher on the Desktop to launch gnome-terminal.
In the Terminal write "killall gnome-panel" then log out by the top right botton and log in in classic mode.

[Pedro Villavicencio (pedro)]

Thanks for your bug report. Please try to obtain a backtrace http://wiki.ubuntu.com/DebuggingProgramCrash and attach the file to the bug report. This will greatly help us in tracking down your problem.

[Carlo Bottai (carlo-bottai)]

I've tested Beta 2 release (20110416) and I'm not able to reproduce the bug because compiz seem not to start now (without compiz effects and it's preferences in the menu).
Can I do something else to help or it's now all ok?

[Pedro Villavicencio (pedro)]

We're closing this bug since it is has been some time with no response from the original reporter. However, if the issue still exists please feel free to reopen with the requested information. Also, if you could, please test against the latest development version of Ubuntu, since this confirms the bug is one we may be able to pass upstream for help.