compiz crashed with SIGSEGV in _mesa_generate_mipmap()

[Mikhail Gavrilov]

Binary package hint: compiz

_

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: compiz-core 1:0.9.2.1+glibmainloop4-0ubuntu10
ProcVersionSignature: Ubuntu 2.6.38-2.29-generic 2.6.38-rc3
Uname: Linux 2.6.38-2-generic i686
Architecture: i386
CrashCounter: 1
DRM.card0.HDMI.A.1:
 status: disconnected
 enabled: disabled
 dpms: On
 modes:
 edid-base64:
DRM.card0.LVDS.1:
 status: connected
 enabled: enabled
 dpms: On
 modes: 1024x600 800x600 848x480 720x480 640x480
 edid-base64: AP///////wAGr9JhAAAAAAATAQOAFg14ChWFl1hTiiYlUFQAAAABAQEBAQEBAQEBAQEBAQEBdBMAOkFYFCAwICYA3n0AAAAYAAAADwAAAAAAAAAAAAAAAAAgAAAA/gBBVU8KICAgICAgICAgAAAA/gBCMTAxQVcwNiBWMSAKACk=
DRM.card0.VGA.1:
 status: disconnected
 enabled: disabled
 dpms: On
 modes:
 edid-base64:
Date: Wed Feb 9 17:21:44 2011
DistUpgraded: Fresh install
DistroCodename: natty
DistroVariant: ubuntu
ExecutablePath: /usr/bin/compiz
GdmLog2: Not present
GraphicsCard: Subsystem: Acer Incorporated [ALI] Device [1025:043d]
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Alpha i386 (20110202)
MachineType: Acer AO521
ProcCmdline: /usr/bin/compiz
ProcEnviron:
 LANGUAGE=ru_RU:ru:en_GB:en
 LANG=ru_RU.UTF-8
 LC_MESSAGES=ru_RU.utf8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-2-generic root=UUID=8bdc56c5-bf04-4b5e-a0a7-3ab5a919f2b6 ro quiet splash vt.handoff=7
SegvAnalysis:
 Segfault happened at: 0x683ba4b: movzbl (%edx,%eax,1),%ecx
 PC (0x0683ba4b) ok
 source "(%edx,%eax,1)" (0x00000003) not located in a known VMA region (needed readable region)!
 destination "%ecx" 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()
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
dmi.bios.date: 08/16/2010
dmi.bios.vendor: Phoenix Technologies LTD
dmi.bios.version: V1.08
dmi.board.name: JV01-NL
dmi.board.vendor: Acer
dmi.board.version: Not Applicable
dmi.chassis.type: 10
dmi.chassis.vendor: Acer
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnPhoenixTechnologiesLTD:bvrV1.08:bd08/16/2010:svnAcer:pnAO521:pvrNotApplicable:rvnAcer:rnJV01-NL:rvrNotApplicable:cvnAcer:ct10:cvrN/A:
dmi.product.name: AO521
dmi.product.version: Not Applicable
dmi.sys.vendor: Acer
version.compiz: compiz 1:0.9.2.1+glibmainloop4-0ubuntu10
version.libdrm2: libdrm2 2.4.23-1ubuntu3
version.libgl1-mesa-glx: libgl1-mesa-glx 7.10-1ubuntu1
version.xserver-xorg: xserver-xorg 1:7.6~3ubuntu3
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 2:2.14.0-1ubuntu6
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110107+b795ca6e-0ubuntu4

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make Ubuntu better. This particular crash has already been reported and is a duplicate of bug #710188, so is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.