Modeline autoadjusting problem

Marc Ferland mferland at
Thu Dec 18 12:47:23 PST 2008


I'm currently trying to force a custom modeline using the intel driver version 

I used the LVDSFixedMode "false" option to force the driver to skip any 
hardcoded/BIOS related modeline. Looking at the screen, I can definitely see 
that the modeline isn't taken into account (pixel are flicking, etc.).

Looking further in the Xorg.log file I saw the following message:

(II) intel(0): Mode for pipe B:
(II) intel(0): Modeline "1024x600_g3"x59.8   51.00  1024 1184 1185 1344  600 
612 613 635 -hsync (37.9 kHz)
(II) intel(0): Adjusted mode for pipe B:
(II) intel(0): Modeline "1024x600_g3"x59.8   65.00  1024 1048 1184 1344  768 
771 777 806 -hsync (48.4 kHz)
(II) intel(0): chosen: dotclock 65142 vco 1824000 ((m 76, m1 11, m2 9), n 2, 
(p 28, p1 2, p2 14))
(II) intel(0): Selecting less common 24 bit TMDS pixel format.

Seems like the modeline is adjusted by the driver _even_ if I specified the 
LVDSFixedMode "false" option. I really don't know what to do next... How can 
I force my modeline to the driver?

The panel I'm trying the configure has a native 1024x600 resolution and 
doesn't have any ROM for EDID info.



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