Forcing LCD resolution - where's the love?

Alex Deucher alexdeucher at gmail.com
Mon Mar 13 12:10:06 PST 2006


On 3/13/06, Dax Kelson <dax at gurulabs.com> wrote:
> I'm currently suffering with a DVI connected 1600x1200 LCD that Xorg
> (6.9/7.0) only refuses to run at 1280x1024.
>
> The error is:
> 'Mode "XXXXxYYYY" is larger than BIOS programmed panel size
>
> I am not alone with this problem. There are other people with 1680x1050
> LCDs that Xorg will only run at 720x400 (egad!).
>
> Yesterday, Bing Ho sent a message to this list "Cannot set resolution
> 1680x1050 for Intel 915".
>
> This bug has been reported many times in lots of different bug trackers,
> for example:
>
> https://bugs.freedesktop.org/show_bug.cgi?id=4314
> https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=162011
>
> Apparently the binary Nvidia drivers have an option you can set to
> ignore the BIOS programmed panel size.
>
> Ideally Xorg could have such an option (and be able to use it with all
> Xorg shipped drivers).
>
> I'm sure myself and other Xorg users would really appreciate any
> developer love that could be applied towards this bug.
>

IIRC, the nv driver doesn't know how to program the flat panel regs,
it just relies on the bios to set them up. I'm not sure if there is
enough info about the nv display engine to do this.  Perhaps the
openbeos nv driver would be a good reference asssuming it can program
them properly.

Alex

> Thanks!
>
> Dax Kelson
>
>
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