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[John Winterton <jwinterton@xxxxxxxxx>]

Fine.  I've had one more incident which was cleared by a system boot.

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https://bugs.launchpad.net/bugs/1404026

Title:
  Changes to support of Gallium 0.4 makes graphics very slow

Status in xorg package in Ubuntu:
  Invalid

Bug description:
  Description:	Ubuntu 14.10
  Release:	14.10
  xorg:
    Installed: 1:7.7+7ubuntu2
    Candidate: 1:7.7+7ubuntu2
    Version table:
   *** 1:7.7+7ubuntu2 0
          500 http://ca.archive.ubuntu.com/ubuntu/ utopic/main amd64 Packages
          100 /var/lib/dpkg/status

  A change in the last week with automatic updates has changed the support of Gallium 0.4 on my RS780 chip set to
  Gallium 0.4 on llvmpipe (LLVM 3.5, 128 bits).  The result is that graphics response is considerably (visibly) slowed by the introduction of this interpreter.  Further LLVM and its supporting components were not loaded.  

  One wonders if any kind of testing was done on this anywhere in the
  upstream side, or it was just believed that this was "better".  I can
  assure you it is worse.

  The worst effect is on full screen "games".  The frame rate has
  dropped off to something like one per second or worse when running
  with wine.  Native mode programs are also noticeably affected, in
  particular Libre Office Calc spreadsheets.

  I did look up this new approach in so far as I am able using the
  synaptic program, and discovered that LLVM was not loaded.  Naively, I
  loaded it with its related components.  There is no visible
  improvement.

  I need a work-around or a fix for this ASAP.  My system is now very
  close to disabled.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.10
  Package: xorg 1:7.7+7ubuntu2
  ProcVersionSignature: Ubuntu 3.16.0-28.38-generic 3.16.7-ckt1
  Uname: Linux 3.16.0-28-generic x86_64
  .tmp.unity.support.test.1:
   
  ApportVersion: 2.14.7-0ubuntu8
  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
  CurrentDesktop: Unity
  Date: Thu Dec 18 16:17:13 2014
  DistUpgraded: Fresh install
  DistroCodename: utopic
  DistroVariant: ubuntu
  ExtraDebuggingInterest: No
  GraphicsCard:
   Advanced Micro Devices, Inc. [AMD/ATI] RS780L [Radeon 3000] [1002:9616] (prog-if 00 [VGA controller])
     Subsystem: Gigabyte Technology Co., Ltd Device [1458:d000]
  InstallationDate: Installed on 2012-10-22 (786 days ago)
  InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
  MachineType: Gigabyte Technology Co., Ltd. GA-MA78LM-S2H
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-28-generic root=UUID=2c4c6961-8d74-4706-8d27-4c2226abc128 ro quiet splash vt.handoff=7
  SourcePackage: xorg
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 04/16/2010
  dmi.bios.vendor: Award Software International, Inc.
  dmi.bios.version: F10
  dmi.board.name: GA-MA78LM-S2H
  dmi.board.vendor: Gigabyte Technology Co., Ltd.
  dmi.board.version: x.x
  dmi.chassis.type: 3
  dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
  dmi.modalias: dmi:bvnAwardSoftwareInternational,Inc.:bvrF10:bd04/16/2010:svnGigabyteTechnologyCo.,Ltd.:pnGA-MA78LM-S2H:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnGA-MA78LM-S2H:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr:
  dmi.product.name: GA-MA78LM-S2H
  dmi.sys.vendor: Gigabyte Technology Co., Ltd.
  version.compiz: compiz 1:0.9.12+14.10.20140918-0ubuntu1
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.56-1
  version.libgl1-mesa-dri: libgl1-mesa-dri 10.3.0-0ubuntu3
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 10.3.0-0ubuntu3
  version.xserver-xorg-core: xserver-xorg-core 2:1.16.0-1ubuntu1.2
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.0-1ubuntu2
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.4.0-2ubuntu2
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.914-1~exp1ubuntu4.1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu2
  xserver.bootTime: Thu Dec 18 09:32:21 2014
  xserver.configfile: default
  xserver.errors:
   
  xserver.logfile: /var/log/Xorg.0.log
  xserver.version: 2:1.16.0-1ubuntu1.2
  xserver.video_driver: radeon

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