Disable stretching in ATI driver

[Alex Deucher]

On 10/23/06, Klaus Reimer <k at ailis.de> wrote:
> Hello,
>
> I just switched from the fglrx driver to the open source ati driver
> (r300, I'm using an ATI X600) and I'm very happy with the driver. 3D
> acceleration is fast enough for me in Quake 3 and dual-head mode with
> MergedFB runs better than with the stinking flgrx driver.
>
> But I have one problem left: My display is 1280x800 (wide-screen) and
> when I use a non-wide-screen resolution (1024x768) then the display is
> always stretched to 1280x800. I've disabled Stretch-Mode in the BIOS.
> Text-Modes and Vesa-Framebuffer-Modes are correctly displayed (not
> stretched) but Xorg is not affected by the BIOS setting.
>
> Is there an option to configure it? Like the CenterMode option of the
> fglrx driver or the NoStretch option I've seen in other open source
> drivers? I'm using the latest CVS version of the ati driver so a patch
> for the source would also work fine for me.
>

There have been patches floating around to disable RMX but nothing has
ever been applied.  You should just be able to comment out the the
setting of the RADEON_USE_RMX flag in the mode validation.  If I have
time this week I'll commit something to git.

Alex