Xorg crashed with SIGABRT in xf86SetScrnInfoModes()

[Tom Wright]

Xorg is unable to start when using the radeon driver (It seems to work fine with Intel).

ProblemType: Crash
DistroRelease: Ubuntu 12.10
Package: xserver-xorg-core 2:1.13.0-0ubuntu1
ProcVersionSignature: Ubuntu 3.5.0-13.14-generic 3.5.3
Uname: Linux 3.5.0-13-generic x86_64
ApportVersion: 2.5.1-0ubuntu7
Architecture: amd64
Date: Sat Sep 8 21:16:07 2012
DistUpgraded: Fresh install
DistroCodename: quantal
DistroVariant: ubuntu
ExecutablePath: /usr/bin/Xorg
GraphicsCard:
 Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0126] (rev 09) (prog-if 00 [VGA controller])
   Subsystem: Sony Corporation Device [104d:907b]
 Advanced Micro Devices [AMD] nee ATI Whistler [AMD Radeon HD 6600M Series] [1002:6741] (prog-if 00 [VGA controller])
   Subsystem: Sony Corporation Device [104d:907b]
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Alpha amd64 (20120724.2)
MachineType: Sony Corporation VPCSA4C5E
ProcCmdline: /usr/bin/X :0 -br -verbose -auth /run/gdm/auth-for-gdm-wrAoCk/database -nolisten tcp vt7
ProcEnviron:
 LANG=en_GB.UTF-8
 LANGUAGE=en_GB:en
 PATH=(custom, no user)
 TERM=linux
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-13-generic root=UUID=23126883-f780-419d-bc5f-6d238b8553cb ro quiet splash vt.handoff=7
Signal: 6
SourcePackage: xorg-server
StacktraceTop:
 xf86SetScrnInfoModes ()
 xf86InitialConfiguration ()
 ?? () from /usr/lib/xorg/modules/drivers/modesetting_drv.so
 ?? () from /usr/lib/xorg/modules/drivers/modesetting_drv.so
 InitOutput ()
Title: Xorg crashed with SIGABRT in xf86SetScrnInfoModes()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:

dmi.bios.date: 11/23/2011
dmi.bios.vendor: INSYDE
dmi.bios.version: R2086H4
dmi.board.asset.tag: N/A
dmi.board.name: VAIO
dmi.board.vendor: Sony Corporation
dmi.board.version: N/A
dmi.chassis.asset.tag: N/A
dmi.chassis.type: 10
dmi.chassis.vendor: Sony Corporation
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnINSYDE:bvrR2086H4:bd11/23/2011:svnSonyCorporation:pnVPCSA4C5E:pvrC60ABP08:rvnSonyCorporation:rnVAIO:rvrN/A:cvnSonyCorporation:ct10:cvrN/A:
dmi.product.name: VPCSA4C5E
dmi.product.version: C60ABP08
dmi.sys.vendor: Sony Corporation
version.compiz: compiz 1:0.9.8.0-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.39-0ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 9.0~git20120903.e1673d20.is.git20120821.c1114c61-0ubuntu1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 9.0~git20120903.e1673d20.is.git20120821.c1114c61-0ubuntu1
version.xserver-xorg-core: xserver-xorg-core 2:1.13.0-0ubuntu1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.99.99~git20120713.6ef1ad6a-0ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.20.6-0ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.1-4~ubuntu1

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make this software better. This particular crash has already been reported and is a duplicate of bug #1048355, 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.