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[Launchpad Bug Tracker <1405024@xxxxxxxxxxxxxxxxxx>]

[Expired for xserver-xorg-video-nouveau (Ubuntu) because there has been
no activity for 60 days.]

** Changed in: xserver-xorg-video-nouveau (Ubuntu)
       Status: Incomplete => Expired

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https://bugs.launchpad.net/bugs/1405024

Title:
  Dash display corruption with nouveau on GeForce 6150SE

Status in xserver-xorg-video-nouveau package in Ubuntu:
  Expired

Bug description:
  On a system with a GeForce 6150SE integrated GPU, opening and closing
  the Dash a few times results in moderate or severe corruption, and
  eventually a complete lockup where the display is completely scrambled
  in a repeating pattern. When the lockup happens, the system stops
  responding on the network as well.

  In the attached dmesg, the ttm errors seem to be the relevant ones;
  the MMIO errors go away when booting with "nouveau.config=PMPEG=0",
  while the corruption and lockups still happen. I'm also attaching the
  session log, which contains an interesting splat from nouveau.

  This happens to me in quantal and every subsequent release, while it
  does not happen in precise. Notably, precise does not show the problem
  even when running a more recent kernel (via HWE stacks).

  The nouveau splat mentioned "Cannot allocate memory", so I increased
  the RAM allocated to the integrated GPU in the BIOS setup to the
  maximum of 256M (the default is 128M). That seems to have fixed the
  problem, even if I open a lot of windows and tabs.

  Running the proprietary nvidia-304 driver on the same hardware,
  everything works fine, regardless of the VRAM setting.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: unity 7.3.1+15.04.20141216-0ubuntu1
  ProcVersionSignature: Ubuntu 3.16.0-28.38-generic 3.16.7-ckt1
  Uname: Linux 3.16.0-28-generic x86_64
  ApportVersion: 2.15.1-0ubuntu1
  Architecture: amd64
  CasperVersion: 1.347
  CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
  Date: Tue Dec 23 00:04:39 2014
  DistUpgraded: Fresh install
  DistroCodename: vivid
  DistroVariant: ubuntu
  GraphicsCard:
   NVIDIA Corporation C61 [GeForce 6150SE nForce 430] [10de:03d0] (rev a2) (prog-if 00 [VGA controller])
     Subsystem: Foxconn International, Inc. Device [105b:0efb]
  LiveMediaBuild: Ubuntu 15.04 "Vivid Vervet" - Alpha amd64 (20141222)
  Lsusb:
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 002 Device 003: ID 046d:c31c Logitech, Inc. Keyboard K120 for Business
   Bus 002 Device 002: ID 413c:3012 Dell Computer Corp. Optical Wheel Mouse
   Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
  MachineType: To Be Filled By O.E.M. To Be Filled By O.E.M.
  ProcEnviron:
   TERM=linux
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: initrd=username/vivid/desktop/amd64/casper/initrd.lz boot=casper netboot=nfs nfsroot=10.0.2.1:/var/lib/tftpboot/username/vivid/desktop/amd64 quiet splash file=/cdrom/preseed/username.seed url=http://10.0.2.64/preseed/ubiquity.cfg nouveau.config=NvMSI=0 BOOT_IMAGE=username/vivid/desktop/amd64/casper/vmlinuz.efi
  SourcePackage: unity
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 06/07/2010
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 080015
  dmi.board.asset.tag: To Be Filled By O.E.M.
  dmi.board.name: M61PMP/M61PMP-K
  dmi.board.vendor: FOXCONN
  dmi.board.version: 1.0
  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.:bvr080015:bd06/07/2010:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnFOXCONN:rnM61PMP/M61PMP-K:rvr1.0: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 1:0.9.12.0+15.04.20141219-0ubuntu1
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.58-2
  version.libgl1-mesa-dri: libgl1-mesa-dri 10.3.2-0ubuntu1
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 10.3.2-0ubuntu1
  version.xserver-xorg-core: xserver-xorg-core 2:1.16.2.901-1ubuntu3
  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 2:2.99.916+git20141119-1~exp1ubuntu1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu2
  xserver.bootTime: Mon Dec 22 16:02:40 2014
  xserver.configfile: default
  xserver.devices:
   input        Power Button         KEYBOARD, id 6
   input        Power Button         KEYBOARD, id 7
   input        Dell Dell USB Optical Mouse MOUSE, id 8
   input        Logitech USB Keyboard KEYBOARD, id 9
   input        Logitech USB Keyboard KEYBOARD, id 10
  xserver.errors:
   Failed to load module "nvidia" (module does not exist, 0)
   Failed to load module "nvidia" (module does not exist, 0)
  xserver.logfile: /var/log/Xorg.0.log
  xserver.version: 2:1.16.2.901-1ubuntu3
  xserver.video_driver: nouveau

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