[Bug 1010794] Re: Graphics/text corruptions in some applications with nouveau drivers

[Launchpad Bug Tracker]

Status changed to 'Confirmed' because the bug affects multiple users.

** Changed in: xorg-server (Ubuntu)
       Status: New => Confirmed

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Title:
  Graphics/text corruptions in some applications with nouveau drivers

Status in Accelerated Xorg driver for nVidia cards:
  Unknown
Status in “xorg-server” package in Ubuntu:
  Confirmed
Status in “xserver-xorg-video-nouveau” package in Ubuntu:
  In Progress
Status in “xorg-server” source package in Precise:
  Confirmed
Status in “xserver-xorg-video-nouveau” source package in Precise:
  Triaged
Status in “xorg-server” source package in Quantal:
  Confirmed
Status in “xserver-xorg-video-nouveau” source package in Quantal:
  Triaged
Status in “xorg-server” source package in Raring:
  Confirmed
Status in “xserver-xorg-video-nouveau” source package in Raring:
  In Progress

Bug description:
  [IMPACT] 
   * Enables SolidFill on fermi and kepler cards, fixing this bug.

  [TESTCASE]
   * start ubuntu software center
   * hover over some urls and icons, likely corruption already occurs at this point,
     the more you mover over the more it shows.

  [Regression Potential] 
   * This should be a safe fix, since it simply enables some code which was already created specifically for these cards, and with some testing it appears to work just fine.
   * I expect no regressions, but in the worst case this would result in garbage being sent to the card, which may cause it to do an unexplained hang or (more likely) errors in dmesg and worse glitches since nothing is being shown any more.
   * I am unsure why sw fallback is causing glitches like this, I tried to add a
     nouveau_bo_wait to nouveau_exa_upload_to_screen, but this didn't fix it. It's not
     ruled out that some lesser used EXA ops may still be glitched, however this would
     not result in this fix being invalid, just if that's the case more research into
     the underlying cause is needed. I would prefer that to be fixed in a separate bug
     then, since this would at least make it less likely that the bug is triggered.

  [Other Info]
   * Doing solid fill in hardware is a pretty nice speedup for those who use valgrind to test code, and also seems to increase responsitivity a little on nouveau without valgrind, since it safes 2 memcpy's on host, 2 memcpy's on gpu, and a memset.

  [Original bug report]
  Hello,

  there are several serious graphic and text corruptions on Quantal with
  nouveau drivers (which are used by default).

  To reproduce:
  - Boot a Quantal live system or a fresh installation
  - Start software-center.
  - Move the mouse in its window or click anything.
  Result: Text and some graphics become massively corrupted (See also attached screenshots and short demo video).

  I have seen this kind of corruption so far in software-center,
  ubiquity-slideshow (during installation) and one time on filename text
  field of gtk-filechooser.

  Booting the system with "nomodeset" seems to make the problem go away,
  as well as installing the propritary Nvidia drivers.

  Kind regards,
  Jan

  ProblemType: Bug
  DistroRelease: Ubuntu 12.10
  Package: xserver-xorg-video-nouveau 1:0.0.16+git20120322+ab7291d-1
  ProcVersionSignature: Ubuntu 3.4.0-5.11-generic 3.4.0
  Uname: Linux 3.4.0-5-generic x86_64
  .tmp.unity.support.test.0:

  ApportVersion: 2.1.1-0ubuntu2
  Architecture: amd64
  CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: compiz
  CurrentDmesg:
   [   14.977209] [drm] nouveau 0000:01:00.0: PMFB0_SUBP0: 0x037f0040
   [   14.977214] [drm] nouveau 0000:01:00.0: PMFB0_SUBP1: 0x037f0000
   [   22.821303] [drm] nouveau 0000:01:00.0: PFIFO: unknown status 0x40000000
   [   22.920011] eth0: no IPv6 routers present
  Date: Sat Jun  9 09:21:19 2012
  DistUpgraded: Fresh install
  DistroCodename: quantal
  DistroVariant: ubuntu
  ExtraDebuggingInterest: Yes, whatever it takes to get this fixed in Ubuntu
  GraphicsCard: NVIDIA Corporation GF108 [GeForce GT 430] [10de:0de1] (rev a1) (prog-if 00 [VGA controller])
  InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Alpha amd64 (20120606.2)
  MachineType: Gigabyte Technology Co., Ltd. P35-DS3
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=de_DE.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz root=/dev/dm-5
  SourcePackage: xserver-xorg-video-nouveau
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 07/10/2008
  dmi.bios.vendor: Award Software International, Inc.
  dmi.bios.version: F13
  dmi.board.name: P35-DS3
  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.:bvrF13:bd07/10/2008:svnGigabyteTechnologyCo.,Ltd.:pnP35-DS3:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnP35-DS3:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr:
  dmi.product.name: P35-DS3
  dmi.sys.vendor: Gigabyte Technology Co., Ltd.
  version.compiz: compiz 1:0.9.7.8-0ubuntu3
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.32-1ubuntu1
  version.libgl1-mesa-dri: libgl1-mesa-dri 8.0.2-0ubuntu4
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 8.0.2-0ubuntu4
  version.xserver-xorg-core: xserver-xorg-core 2:1.11.4-0ubuntu11
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.0-0ubuntu1
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~git20111219.aacbd629-0ubuntu2
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.19.0-1ubuntu1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20120322+ab7291d-1

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