Wayne, thank you for taking the time to report this bug and helping to make Ubuntu better. However, I am closing it because as per https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1268121/comments/3 the bug has been fixed in the latest development version of Ubuntu - Trusty Tahr.
This is a significant bug in Ubuntu. If you need a fix for the bug in previous versions of Ubuntu, please perform as much as possible of the SRU Procedure [1] to bring the need to a developer's attention. [1]: https://wiki.ubuntu.com/StableReleaseUpdates#Procedure ** Changed in: xorg (Ubuntu) Status: Expired => Fix Released -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1268121 Title: AMD Radeon HD 8450G flickering screen & other display issues Status in “xorg” package in Ubuntu: Fix Released Bug description: screen flickers, especially icons in the laucher bar, or when changing workspaces. GUI widgets(menu bars, text fields etc.) often disappear or become orange blocks. Corner of a app will sometimes be stretched on a sharp angle to one of the corners of the monitor. NOTE: there has been some improvement in this over the last couple months. When initially installed, hiding the laucher bar would leave a discoloured block along the left side of the screen, this is no longer the case. NOTE 2: Screen shots taken when these problems occur do not show the aforementioned display issues. ProblemType: Bug DistroRelease: Ubuntu 13.10 Package: xorg 1:7.7+1ubuntu6 ProcVersionSignature: Ubuntu 3.11.0-15.23-generic 3.11.10 Uname: Linux 3.11.0-15-generic x86_64 .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: compiz CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0' CompositorUnredirectFSW: true Date: Sat Jan 11 06:50:05 2014 DistUpgraded: 2013-10-18 19:26:41,542 DEBUG enabling apt cron job DistroCodename: saucy DistroVariant: ubuntu ExtraDebuggingInterest: Yes GraphicsCard: Advanced Micro Devices, Inc. [AMD/ATI] Richland [Radeon HD 8450G] [1002:9995] (prog-if 00 [VGA controller]) Subsystem: Acer Incorporated [ALI] Device [1025:080e] InstallationDate: Installed on 2013-10-09 (94 days ago) InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424) MachineType: Acer Aspire V5-552P MarkForUpload: True ProcEnviron: LANGUAGE=en_CA:en TERM=xterm PATH=(custom, no user) LANG=en_CA.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-15-generic.efi.signed root=UUID=d3fa1fb3-6a48-4d7d-8cc8-ab0acb13a47e ro quiet splash vt.handoff=7 SourcePackage: xorg UpgradeStatus: Upgraded to saucy on 2013-10-18 (84 days ago) dmi.bios.date: 05/28/2013 dmi.bios.vendor: Insyde Corp. dmi.bios.version: V2.02 dmi.board.asset.tag: Base Board Asset Tag dmi.board.name: Dazzle_RL dmi.board.vendor: Acer dmi.board.version: Type2 - A01 Board Version dmi.chassis.type: 10 dmi.chassis.vendor: Chassis Manufacturer dmi.chassis.version: Chassis Version dmi.modalias: dmi:bvnInsydeCorp.:bvrV2.02:bd05/28/2013:svnAcer:pnAspireV5-552P:pvrV2.02:rvnAcer:rnDazzle_RL:rvrType2-A01BoardVersion:cvnChassisManufacturer:ct10:cvrChassisVersion: dmi.product.name: Aspire V5-552P dmi.product.version: V2.02 dmi.sys.vendor: Acer version.compiz: compiz 1:0.9.10+13.10.20131011-0ubuntu1 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: Wed Jan 8 19:35:56 2014 xserver.configfile: default xserver.errors: xserver.logfile: /var/log/Xorg.0.log xserver.version: 2:1.14.5-1ubuntu2~saucy1 xserver.video_driver: radeon To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1268121/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
