Graphical corruption

Bug #1210377 reported by Ian Nicholson on 2013-08-09
This bug affects 1 person
Affects Status Importance Assigned to Milestone
xserver-xorg-video-ati (Ubuntu)

Bug Description

The corruption occurred on a fresh 13.04 install and persists after upgrade to 13.10. It manifests as triangles of color extending across the screen and windows.

WORKAROUND: Use fglrx.

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: xorg 1:7.7+1ubuntu5
ProcVersionSignature: Ubuntu 3.10.0-6.17-generic 3.10.3
Uname: Linux 3.10.0-6-generic x86_64

ApportVersion: 2.12-0ubuntu3
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: compiz
CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
CompositorUnredirectFSW: true
Date: Thu Aug 8 22:32:56 2013
DistUpgraded: 2013-08-08 22:11:05,335 DEBUG enabling apt cron job
DistroCodename: saucy
DistroVariant: ubuntu
EcryptfsInUse: Yes
ExtraDebuggingInterest: Yes, if not too technical
 Advanced Micro Devices, Inc. [AMD/ATI] Trinity [Radeon HD 7520G] [1002:9990] (prog-if 00 [VGA controller])
   Subsystem: Toshiba America Info Systems Device [1179:fb43]
InstallationDate: Installed on 2013-08-09 (0 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
MachineType: TOSHIBA Satellite L875D
MarkForUpload: True
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.10.0-6-generic root=/dev/mapper/ubuntu--vg-root ro i8042.nomux=1 i8042.reset quiet splash vt.handoff=7
SourcePackage: xorg
UpgradeStatus: Upgraded to saucy on 2013-08-09 (0 days ago) 12/06/2012
dmi.bios.vendor: Insyde Corp.
dmi.bios.version: 6.30
dmi.board.asset.tag: Base Board Asset Tag PLCSC8
dmi.board.vendor: AMD
dmi.board.version: Base Board Version
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: OEM Chassis Manufacturer
dmi.chassis.version: OEM Chassis Version
dmi.modalias: dmi:bvnInsydeCorp.:bvr6.30:bd12/06/2012:svnTOSHIBA:pnSatelliteL875D:pvrPSKFQU-003034:rvnAMD:rnPLCSC8:rvrBaseBoardVersion:cvnOEMChassisManufacturer:ct10:cvrOEMChassisVersion: Satellite L875D
dmi.product.version: PSKFQU-003034
dmi.sys.vendor: TOSHIBA
version.compiz: compiz 1:0.9.9~daily13.06.19~13.04-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.46-1
version.libgl1-mesa-dri: libgl1-mesa-dri 9.1.4-0ubuntu8
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 9.1.4-0ubuntu8
version.xserver-xorg-core: xserver-xorg-core 2:1.14.2-0ubuntu9
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu3.1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.2.0-0ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.21.12-1ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.8-0ubuntu3
xserver.bootTime: Thu Aug 8 22:16:43 2013
xserver.configfile: default

xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.14.2-0ubuntu9
xserver.video_driver: radeon

Ian Nicholson (imnichol) wrote :
Ian Nicholson (imnichol) wrote :

I'm changing it to affect the driver package that I currently have installed.

affects: xorg (Ubuntu) → xserver-xorg-video-ati (Ubuntu)
Daniel van Vugt (vanvugt) wrote :


Your screenshot shows that Compiz is getting bad textures from the driver/hardware. Compiz always renders everything in triangles but their textures should fit together seamlessly. Most likely it's a driver bug.

You might want to try installing AMD's own driver "fglrx".

Alternatively, you might have luck with a workaround like:
    sudo apt-get install compizconfig-settings-manager
    ccsm &
    CCSM > Utility > Workarounds > Force full screen redraws (buffer swap) on repaint = ON

Ian Nicholson (imnichol) wrote :

The CCSM workaround has not resolved the problem. Unfortunately, whenever I install fglrx, lightdm appears to crash and I wind up with a black screen with a white cursor in the upper left corner of the screen.

Ian Nicholson (imnichol) wrote :

I was able to install the fglrx driver today and I am no longer affected by the bug.

madbiologist (me-again) wrote :

This problem should be solved in the upstream 3.13-rc6 kernel by this patch:

author Alex Deucher
committer Alex Deucher
commit e2f6c88fb903e123edfd1106b0b8310d5117f774
tree 6d95cdc6db2ea330a95d1a734f6433c24516db2e
parent b67ce39a30976171e7b96b30a94a0216ab89df97

drm/radeon: fix asic gfx values for scrapper asics

Fixes gfx corruption on certain TN/RL parts.


Signed-off-by: Alex Deucher
Cc: stable

A PPA of this kernel is available at and instructions on how to install and uninstall it are available at

Ian Nicholson, this bug was reported a while ago and there hasn't been any activity in it recently. We were wondering if this is still an issue? If so, could you please test for this with the latest development release of Ubuntu? ISO images are available from .

If it remains an issue, could you please run the following command in the development release from a Terminal (Applications->Accessories->Terminal), as it will automatically gather and attach updated debug information to this report:

apport-collect -p xserver-xorg-video-ati REPLACE-WITH-BUG-NUMBER

Please note, given that the information from the prior release is already available, doing this on a release prior to the development one would not be helpful.

Thank you for your understanding.

Helpful bug reporting tips:

description: updated
Changed in xserver-xorg-video-ati (Ubuntu):
importance: Undecided → Low
status: New → Incomplete
madbiologist (me-again) wrote :

The patch I mentioned in comment #6 is now also available in the upstream 3.12.7 kernel.

A PPA of this kernel is available at and instructions on how to install and uninstall it are available at

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