compiz team mailing list archive

[Bryce Harrington <555641@xxxxxxxxxxxxxxxxxx>]

** Description changed:

  [Problem]
  Running compiz with dual-head enabled on certain graphics cards does not work.  Compiz either errors out and refuses to run, or else fails with a black screen.
  
  Compiz displays the desktop as a 3D texture.  The maximum texture size
  is determined by the hardware capabilities of the particular graphics
  card.  Some older or lower end cards have a limitation of 2048x2048,
  which means if you set up a side-by-side arrangement, the sum of the
  horizontal resolutions could exceed 2048.
  
  Some example max texture limits:
  
  Radeon Xpress 200M: 2048x2048
  Radeon X1600/X1900: 4096 x 4096
  Radeon HD 2400: 8192 x 8192
  Radeon HD 2600/4670/4850/4870: 8192 x 8192
  GeForce 7300/7600:  4096 x 4096
  Quadro FX 4500: 4096 x 4096
  GeForce 8600/880/9400/9600/120/130/285:  8192 x 8192
  Quadro FX 4800: 8192 x 8192
+ i945:  2048 x 2048
  GMA 950:  2048 x 2048
  GMA X3100:  2048 x 2048
  
  [Workarounds]
  A.  If monitors are rectangular, arrange them above/below instead of left/right
  
  B.  Turn off compiz
  
  [Original Report]
  I'm using a Lenovo S10-2 netbook (Intel GMA950 chipset, 1024x600 internal resolution). When I connect a VGA display (Samsung SyncMaster 757NF) and set it to span, both screens go black with only the mouse cursor visible.
  
  The secondary display works fine if I set it to 832x624 or lower (but
  this is not really an acceptable option with the size of the display,
  etc)
  
  Using Ubuntu lucid with all updates. This bug was present in karmic as
  well.
  
  ProblemType: Bug
  DistroRelease: Ubuntu 10.04
  Package: xorg 1:7.5+3ubuntu1
  ProcVersionSignature: Ubuntu 2.6.32-19.28-generic 2.6.32.10+drm33.1
  Uname: Linux 2.6.32-19-generic i686
  NonfreeKernelModules: wl
  Architecture: i386
  Date: Mon Apr  5 12:44:50 2010
  DkmsStatus:
   bcmwl, 5.60.48.36+bdcom, 2.6.32-19-generic, i686: installed
   bcmwl, 5.60.48.36+bdcom, 2.6.31-20-generic, i686: installed
  InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release i386 (20091028.5)
  MachineType: LENOVO 20027
  ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-19-generic root=UUID=8776efb2-cf16-456a-850a-5ade325b538a ro quiet splash
  ProcEnviron:
   LANG=en_US.utf8
   SHELL=/bin/bash
  SourcePackage: xorg
  dmi.bios.date: 10/02/2009
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 1ACN21WW(V1.12)
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: Mariana2
  dmi.board.vendor: LENOVO
  dmi.board.version: Base Board Version
  dmi.chassis.asset.tag: Chassis Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: Chassis Manufacturer
  dmi.chassis.version: Chassis Version
  dmi.modalias: dmi:bvnLENOVO:bvr1ACN21WW(V1.12):bd10/02/2009:svnLENOVO:pn20027:pvrLenovoIdeaPadS10-2:rvnLENOVO:rnMariana2:rvrBaseBoardVersion:cvnChassisManufacturer:ct10:cvrChassisVersion:
  dmi.product.name: 20027
  dmi.product.version: Lenovo IdeaPad S10-2
  dmi.sys.vendor: LENOVO
  system:
   distro:             Ubuntu
   codename:           lucid
   architecture:       i686
   kernel:             2.6.32-19-generic

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https://bugs.launchpad.net/bugs/555641

Title:
  MASTER: max texture size prevents compiz from running