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About a month ago I installed a fresh Ubuntu 13.10 64bit on a i5
machine, 8GB RAM, with Radeon 7950 graphic card. Before this, I was
running 12.04 64bit without any graphic driver related problems.

I tried both Catalyst versions from official repository, latest 13.12
drivers from AMD site and open source drivers (radeon), and I can't tell
which one was more unstable. After a few hours of use, I could not play
any videos with any of the drivers (tried mplayer and VLC, both crashed
with various errors), OpenGL isn't working anymore (even glxgears was
crashing) and I had various artifacts on screen (like parts of window
rendered on the wrong place on screen). Putting machine to sleep and
waking it up later produced even more errors. I also tried to turn off
various things in CCSM, without any positive results. Steam client had
terrible flickering almost all the time, it was practically unusable;
also about 8 of 10 times it was crashing on startup.

After about two weeks of trying to make it usable, I gave up and
installed MATE desktop. Not a single graphic error since then. Steam
works flawlessly, 3D games also, Wine games, playing videos, everything.

I kind of like how Unity works, I was using it for the last two years as
my main desktop (on the same machine), but this behaviour is unexpected
and utterly undesireable.

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: unity 7.1.2+13.10.20131014.1-0ubuntu1
ProcVersionSignature: Ubuntu 3.11.0-15.23-generic 3.11.10
Uname: Linux 3.11.0-15-generic x86_64
NonfreeKernelModules: fglrx
.tmp.unity.support.test.0:
 
ApportVersion: 2.12.5-0ubuntu2.2
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
Date: Tue Jan 14 07:26:14 2014
DistUpgraded: Fresh install
DistroCodename: saucy
DistroVariant: ubuntu
DkmsStatus:
 fglrx, 13.251, 3.11.0-14-generic, x86_64: installed
 fglrx, 13.251, 3.11.0-15-generic, x86_64: installed
 vboxhost, 4.3.6, 3.11.0-14-generic, x86_64: installed
 vboxhost, 4.3.6, 3.11.0-15-generic, x86_64: installed
GraphicsCard:
 Advanced Micro Devices, Inc. [AMD/ATI] Tahiti PRO [Radeon HD 7950] [1002:679a] (prog-if 00 [VGA controller])
   Subsystem: ASUSTeK Computer Inc. Device [1043:0424]
InstallationDate: Installed on 2013-12-06 (38 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
JockeyStatus:
 kmod:fglrx - ATI Fire GL (Proprietary, Enabled, In use)
 kmod:fglrx_updates - Video driver for the AMD graphics accelerators (Proprietary, Disabled, Not in use)
MachineType: To Be Filled By O.E.M. To Be Filled By O.E.M.
MarkForUpload: True
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.11.0-15-generic root=UUID=eab5c9d7-0979-4fae-9ed5-a26a530694de ro quiet splash vt.handoff=7
SourcePackage: unity
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/08/2011
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: P1.00
dmi.board.name: Z68 Extreme4 Gen3
dmi.board.vendor: ASRock
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrP1.00:bd07/08/2011:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnASRock:rnZ68Extreme4Gen3:rvr:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
dmi.product.name: To Be Filled By O.E.M.
dmi.product.version: To Be Filled By O.E.M.
dmi.sys.vendor: To Be Filled By O.E.M.
version.compiz: compiz 1:0.9.10+13.10.20131011-0ubuntu1
version.fglrx-installer: fglrx-installer N/A
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.46-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 9.2.1-1ubuntu3
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 9.2.1-1ubuntu3
version.xserver-xorg-core: xserver-xorg-core 2:1.14.5-1ubuntu2~saucy1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu3.1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.2.0-0ubuntu10
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.904-0ubuntu2
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.9-2ubuntu1
xserver.bootTime: Fri Jan 10 14:53:12 2014
xserver.configfile: /etc/X11/xorg.conf
xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.14.5-1ubuntu2~saucy1
xserver.video_driver: fglrx

** Affects: unity
     Importance: Undecided
         Status: Incomplete

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


** Tags: amd64 apport-bug saucy ubuntu
-- 
Unity in 13.10 unstable with Radeon 7950
https://bugs.launchpad.net/bugs/1268848
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