Bug#498673: xserver-xorg-video-intel: 3D acceleration is very slow in absence of heavy load on the CPU

[Michel Dänzer <daenzer@debian.org>]

On Fri, 2008-09-19 at 01:22 +0530, Subhashis Roy wrote:
> 
> I tried the 'libgl1-mesa-dri' version from experimental. This required me 
> to change several other X related packages to meet dependencies in 
> experimental.
> 
> However, the problem remains as before (~15 Frame/sec in full screen 
> mode).
> 
> 3-D graphics runs very slow in absence of other continuous load on the CPU 
> (naively speaking, it appears that the softwares displaying are not 
> communicating the need of using CPU cycles to the hardware with the DRI 
> installed).

When you run a 3D app, does the number of interrupts associated with
your graphics card (IRQ 16 according to the log file) increase
in /proc/interrupts?


-- 
Earthling Michel Dänzer           |          http://tungstengraphics.com
Libre software enthusiast         |          Debian, X and DRI developer