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[Jean-Baptiste Lallement <jean-baptiste@xxxxxxxxxx>]

Public bug reported:

Binary package hint: compiz

Fresh installation of Natty with the Alternate Network install.

Compiz crashes when pressing ALT+Tab. 
Same crash with Unity or classic desktop.

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: compiz-core 1:0.9.2.1+glibmainloop4-0ubuntu7
ProcVersionSignature: Ubuntu 2.6.38-1.28-generic 2.6.38-rc2
Uname: Linux 2.6.38-1-generic x86_64
Architecture: amd64
CompisitorRunning: None
CompizPlugins: No value set for `/apps/compiz-1/general/allscreens/options/active_plugins'
CrashCounter: 1
DRM.card0.DP.1:
 status: disconnected
 enabled: disabled
 dpms: On
 modes: 
 edid-base64:
DRM.card0.HDMI.A.1:
 status: disconnected
 enabled: disabled
 dpms: On
 modes: 
 edid-base64:
Date: Sun Jan 30 12:05:38 2011
DistUpgraded: Fresh install
DistroCodename: natty
DistroVariant: ubuntu
ExecutablePath: /usr/bin/compiz
GraphicsCard:   Subsystem: PC Partner Limited Device [174b:1482]
MachineType: Gigabyte Technology Co., Ltd. GA-890GPA-UD3H
ProcCmdline: compiz
ProcEnviron:
 LANGUAGE=en_US:en
 LANG=en_US.UTF-8
 LC_MESSAGES=en_US.utf8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-1-generic root=UUID=30fc9e49-b3c8-4ea6-aec8-d504895ea7eb ro quiet splash vt.handoff=7
Renderer: Hardware acceleration
SegvAnalysis:
 Segfault happened at: 0x7f584fc550ab:	movzbl (%r9),%r10d
 PC (0x7f584fc550ab) ok
 source "(%r9)" (0x00000000) not located in a known VMA region (needed readable region)!
 destination "%r10d" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: compiz
StacktraceTop:
 ?? () from /usr/lib/dri/libdricore.so
 ?? () from /usr/lib/dri/libdricore.so
 _mesa_generate_mipmap () from /usr/lib/dri/libdricore.so
 radeonGenerateMipmap () from /usr/lib/dri/r600_dri.so
 _mesa_GenerateMipmapEXT () from /usr/lib/dri/libdricore.so
Title: compiz crashed with SIGSEGV in _mesa_generate_mipmap()
UnitySupportTest:
 
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
XsessionErrors:
 (nautilus:2729): GConf-CRITICAL **: gconf_value_free: assertion `value != NULL' failed
 (nm-applet:2738): Gdk-CRITICAL **: IA__gdk_window_thaw_toplevel_updates_libgtk_only: assertion `private->update_and_descendants_freeze_count > 0' failed
dmi.bios.date: 07/23/2010
dmi.bios.vendor: Award Software International, Inc.
dmi.bios.version: FD
dmi.board.name: GA-890GPA-UD3H
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.board.version: x.x
dmi.chassis.type: 3
dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
dmi.modalias: dmi:bvnAwardSoftwareInternational,Inc.:bvrFD:bd07/23/2010:svnGigabyteTechnologyCo.,Ltd.:pnGA-890GPA-UD3H:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnGA-890GPA-UD3H:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr:
dmi.product.name: GA-890GPA-UD3H
dmi.sys.vendor: Gigabyte Technology Co., Ltd.
version.libdrm2: libdrm2 2.4.23-1ubuntu3
version.libgl1-mesa-glx: libgl1-mesa-glx 7.10-1ubuntu1
version.xserver-xorg: xserver-xorg 1:7.5+6ubuntu8
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.13.2+git20110124.fadee040-0ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.14.0-1ubuntu2
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110107+b795ca6e-0ubuntu1

** Affects: compiz (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-crash natty ubuntu

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https://bugs.launchpad.net/bugs/710108

Title:
  compiz crashed with SIGSEGV in _mesa_generate_mipmap()