LCD is flickering, intel driver ignoring modeline? getting headache...

Alexander E. Patrakov patrakov at
Thu Sep 13 05:07:17 PDT 2007

Florian Mickler wrote:
> Hi all!
> Since the upgrade to newest xorg release my lcd is flickering. it seems
> that the intel-driver is using a 30hz-mode.

Is it flickering even if nothing changes on the screen?

> i have tried many things but can not get it to stop flickering...

Have you tried changing the refresh rate? Most LCDs like 60 Hz, not 75.

xrandr -r 60

Also, does changing the refresh rate to 30 Hz and back to 75 cause any 
visible effect?

> (maybe my headache is just preventing me from thinking clear...? )
> Attached are xorg.conf and xorg-logfile.
> since i used "preferredmode" in the monitor section xrandr is giving me
> this output:
>  SZ:    Pixels          Physical       Refresh
> *0   1400 x 1050   ( 370mm x 277mm )  *75   30   60  

Alexander E. Patrakov

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