Intel, xrandr and performance.

[Paul Menzel]

Am Sonntag, den 10.01.2010, 20:03 +0100 schrieb Łukasz Maśko:
> My laptop has an Intel 945GM graphics chip. Right now I'm using Intel driver 
> 2.9.1. It works pretty well, but... 
> 
> If I turn on my secondary display with xrandr (it is an LCD screen connected 
> via DVI, I'm setting it as a cloned display), graphics performs much slower. 
> It concerns video and OpenGL (desktop effects inder KDE4). About a month 
> ago, before I switched to KDE4, under KDE3 everything was working OK using 
> the same hardware configuration.
> 
> Is it just a general case, or I have something not correctly configured?

I have no clue. But does KDE 4 use more desktop effects? Reading your
message I would suggest that the KDE upgrade is at fault here. Or did
you also upgrade the Intel graphics driver?

Install a different DE or try with KDE 3 again to test the video and
OpenGL stuff.

Depending of your findings you should either contact the KDE guys or the
Intel [1] guys afterward and leave the corresponding URL in a reply to
this thread.


Thanks,

Paul


[1] http://intellinuxgraphics.org/
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