855GM not changing resolutions for games

[Roland Scheidegger]

tuxrocks at cox.net wrote:
>> Alright, now I am beginning to feel a little stupid.  I tried placing a  
> HorizSync range in my config file, and it seems to be ignored, because  
> the log still shows the "not within DDC range" error listed above.  I put it in  
> the monitor section: "HorizSync 30 - 50".  Shouldn't it at least decline that  
> range?  I also tried to specify "NoDDC"  "true" in my Device section.  
>   
> Am I doing it incorrectly?  I am including a link to my config file, and most  
> recent log file.  
>  Xorg.conf: http://staff.norman.k12.ok.us/~wsmith/xorg.conf 
> Xorg.0.log (most recent): 
> http://staff.norman.k12.ok.us/~wsmith/Xorg.0.log.recent 
That not within DDC range error shows up like that even when you do not 
specify a sync range at all? Now I'm confused. No idea where it gets 
those 45.7 and 50.5kHz values, probably auto-generated somewhere and it 
doesn't look like your panel returns a hsync range at all (according to 
the log, it's using EDID 1.2 (not recommended for devices manufactured 
after 1st jan 2000...), an utterly useless and broken piece of garbage, 
because it does not necessarily include the ONLY number you actually 
need at least for traditional crts - the hsync (and to a lesser degree, 
vsync) range - but I disgress...).
That HorizSync line above looks good except I don't know if the parser 
accepts the spaces between the numbers and the dash.
Unfortunately I don't really know how mode validation on the i810 and 
friends works, it's cumbersome enough on radeons without the need for 
VBE already. Maybe someone familiar with that driver could help you more.

Roland