MASTER: max texture size prevents compiz from running
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
compiz (Ubuntu) |
Confirmed
|
Undecided
|
Unassigned | ||
xorg-server (Ubuntu) |
Triaged
|
Wishlist
|
Unassigned |
Bug Description
[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/
GeForce 7300/7600: 4096 x 4096
Quadro FX 4500: 4096 x 4096
GeForce 8600/880/
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
ProcVersionSign
Uname: Linux 2.6.32-19-generic i686
NonfreeKernelMo
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=
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.
dmi.board.name: Mariana2
dmi.board.vendor: LENOVO
dmi.board.version: Base Board Version
dmi.chassis.
dmi.chassis.type: 10
dmi.chassis.vendor: Chassis Manufacturer
dmi.chassis.
dmi.modalias: dmi:bvnLENOVO:
dmi.product.name: 20027
dmi.product.
dmi.sys.vendor: LENOVO
system:
distro: Ubuntu
codename: lucid
architecture: i686
kernel: 2.6.32-19-generic
affects: | xorg (Ubuntu) → xorg-server (Ubuntu) |
Changed in xorg-server (Ubuntu): | |
status: | New → Confirmed |
description: | updated |
description: | updated |
description: | updated |
description: | updated |
Changed in compiz (Ubuntu): | |
status: | New → Confirmed |
Does it work properly if you disable desktop effects?