Xorg crashed with SIGABRT in inb()

[Beeker]

I can't boot into the Ubuntu 14.04 Development Branch clean desktop directly from the standard boot menu option. The screen goes all wonky and crazy colors like the driver isn't active. I have to choose the diagnostic menu, then exit out of an option there. The computer then boots properly into the desktop but with really low resolution and blurry (1280x1024 as opposed to 1600x1024). Thanks.

ProblemType: Crash
DistroRelease: Ubuntu 14.04
Package: xserver-xorg-core 2:1.15.0-1ubuntu7
ProcVersionSignature: Ubuntu 3.8.0-26.38-generic 3.8.13.2
Uname: Linux 3.8.0-26-generic i686
.tmp.unity.support.test.1:

ApportVersion: 2.13.3-0ubuntu1
Architecture: i386
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: compiz
CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
CompositorUnredirectFSW: true
Date: Tue Mar 18 18:20:17 2014
DistUpgraded: 2014-03-18 17:42:48,376 DEBUG enabling apt cron job
DistroCodename: trusty
DistroVariant: ubuntu
DkmsStatus: fglrx, 13.350, 3.13.0-18-generic, i686: installed
ExecutablePath: /usr/bin/Xorg
ExtraDebuggingInterest: Yes
GraphicsCard:
 Advanced Micro Devices, Inc. [AMD/ATI] Turks XT [Radeon HD 6670/7670] [1002:6758] (prog-if 00 [VGA controller])
   Subsystem: Diamond Multimedia Systems Device [1092:6670]
InstallationDate: Installed on 2013-07-04 (258 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release i386 (20130424)
MachineType: MSI MS-7599
ProcCmdline: /usr/bin/X -nolisten tcp :1 -auth /tmp/serverauth.Gxy1unuWh8
ProcEnviron:
 TERM=linux
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-26-generic root=UUID=f04ca79f-2344-4a96-9df0-39ec18677851 ro recovery nomodeset
Renderer: Software
Signal: 6
SourcePackage: xorg-server
StacktraceTop:
 ?? () from /usr/lib/i386-linux-gnu/libpciaccess.so.0
 pci_io_read8 () from /usr/lib/i386-linux-gnu/libpciaccess.so.0
 ?? ()
 ?? ()
 ?? ()
Title: Xorg crashed with SIGABRT in pci_io_read8()
UpgradeStatus: Upgraded to trusty on 2014-03-18 (1 days ago)
UserGroups:

dmi.bios.date: 01/22/2010
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: V10.2
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: 770-G45 (MS-7599)
dmi.board.vendor: MSI
dmi.board.version: 2.0
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: MSI
dmi.chassis.version: 2.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrV10.2:bd01/22/2010:svnMSI:pnMS-7599:pvr2.0:rvnMSI:rn770-G45(MS-7599):rvr2.0:cvnMSI:ct3:cvr2.0:
dmi.product.name: MS-7599
dmi.product.version: 2.0
dmi.sys.vendor: MSI
version.compiz: compiz 1:0.9.11+14.04.20140310-0ubuntu1
version.libdrm2: libdrm2 2.4.52-1
version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.0-1ubuntu1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.0-1ubuntu1
version.xserver-xorg-core: xserver-xorg-core 2:1.15.0-1ubuntu7
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.8.2-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.3.0-1ubuntu3
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.910-0ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.10-1ubuntu2
xserver.bootTime: Wed Mar 19 19:36:46 2014
xserver.configfile: default
xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.15.0-1ubuntu7

[Apport retracing service (apport)]

StacktraceTop:
 inb (__port=963) at /usr/include/i386-linux-gnu/sys/io.h:47
 pci_device_linux_sysfs_read8 (handle=0xb7b3e5a0, port=963) at ../../src/linux_sysfs.c:845
 pci_io_read8 (handle=0xb7b3e5a0, reg=963) at ../../src/common_io.c:184
 ?? ()
 ?? ()

[Beeker (bambam65)]

I found this while trying to run startx (which was ultimately successful in getting to low res resolution as stated).

[Beeker (bambam65)]

Sorry for the shit quality of the pic.... My stupid ipad's photo camera wasn't working right :/

[penalvch (penalvch)]

Beeker, the development release kernel and xorg stack are no longer supported. If this is still reproducible, please file a new report after fully updating.