Public bug reported:
I first noticed this under wine, but have reproduced it with several
Linux-native games including "Yo Frankie!" and "Cube 2".
When shaders are disabled, I see normal performance. When shaders are
enabled, however, I get very jerky performance; essentially one-two
seconds of normal performance alternating with a freeze of at least 0.5
second.
This is a regression from Jaunty.
ProblemType: Bug
Architecture: amd64
Date: Sun Sep 27 20:56:47 2009
DistroRelease: Ubuntu 9.10
MachineType: Acer Aspire 5520
NonfreeKernelModules: nvidia
Package: nvidia-glx-185 185.18.36-0ubuntu2
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.31-11-generic
root=UUID=5758aeaf-65c9-44df-820a-7c430277de3d ro quiet splash
ProcEnviron:
LANG=en_NZ.UTF-8
SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-11.36-generic
RelatedPackageVersions:
xserver-xorg 1:7.4+3ubuntu5
libgl1-mesa-glx 7.6.0~git20090817.7c422387-0ubuntu5
libdrm2 2.4.13-1ubuntu1
xserver-xorg-video-intel 2:2.8.1-1ubuntu2
xserver-xorg-video-ati 1:6.12.99+git20090825.fc74e119-0ubuntu2
SourcePackage: nvidia-graphics-drivers-180
Uname: Linux 2.6.31-11-generic x86_64
dmi.bios.date: 05/06/2008
dmi.bios.vendor: Acer
dmi.bios.version: V1.33
dmi.board.name: Fuquene
dmi.board.vendor: Acer
dmi.board.version: N/A
dmi.chassis.type: 10
dmi.chassis.vendor: Acer
dmi.chassis.version: N/A
dmi.modalias:
dmi:bvnAcer:bvrV1.33:bd05/06/2008:svnAcer:pnAspire5520:pvrV1.33:rvnAcer:rnFuquene:rvrN/A:cvnAcer:ct10:cvrN/A:
dmi.product.name: Aspire 5520
dmi.product.version: V1.33
dmi.sys.vendor: Acer
fglrx: Not loaded
system:
distro: Ubuntu
architecture: x86_64kernel: 2.6.31-11-generic
** Affects: nvidia-graphics-drivers-180 (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug
--
OpenGL applications with shaders turned on have severe performance issues
https://bugs.launchpad.net/bugs/437526
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