i915 and hardcoded 75 Hz refresh rate?

[Alan Hourihane]

On Thu, May 19, 2005 at 03:25:35 +0200, Andreas Schildbach wrote:
> Hi everyone,
> 
> I'd like to connect a Dell 2405 external display to my new Dell Latitude 
> X1, which is equipped with an i915GMS.
> 
> The only vertical refresh rate the 2405 will accept at its native 
> resolution of 1920 x 1200 is 60 Hz.
> 
> Unfortunately, the i810 driver that comes with Xorg 6.8.2-15 (Ubuntu 
> Breezy) always sets the refresh rate to 75 Hz, regardless of what I 
> specify in the various modelines I tried: 640 x 480 @ 60 Hz, 1024 x 768 
> @ 60 Hz, 1280 x 1024 @ 60 Hz and I guess also 1600 x 1200, 1680 x 1050 
> and 1920 x 1200 (on these, the monitor only displays "cannot display mode").
> 
> Is there any way to override the hardcoded 75 Hz vertical refresh rate?

Check your config file has VertRefresh set to 60.

Alan.