Dual link on X1250 xf86-video-ati git head fails (also failed on radeonhd)
Adam J. Richter
adam at yggdrasil.com
Thu Mar 20 00:21:22 PDT 2008
On Mon, Mar 17, 2008 at 09:27:14AM -0400, Alex Deucher wrote:
> On Sun, Mar 16, 2008 at 2:21 AM, Adam J. Richter <adam at yggdrasil.com> wrote:
> > Hi everybody,
> > radeonhd-1.1.0 correctly detects my DVI connection but
> > radeon-6.8.0 always thinks is not connected. With radeon-6.8.0, I can
> > get correct DVI output on my 1920x1200 monitor by simultaneously
> > connecting DVI and VGA cables from the same monitor, but, if I only
> > connect the DVI cable, the video comes up in a much lower default
> > resolution, perhaps 640x480.
> This is fixed in ati git master. 6.8.0 is too old.
You're right. I have now downloaded the latest xorg-video-ati
git, and it does indeed work with the the DVI cable plugged in. Sorry
for not checking the git version first.
By the way, I don't know if dual link is supposed to work in
xorg-video-ati yet, but I thought I should let you know that it did
not work for me with my new lp3065 monitor (neither did radeonhd,
which I think is supposed to work). xrandr correctly sees the
2560x1600 video mode and thinks that it has selected it, but I only
see moving rectangular pattern that I think is some kind of bad video
signal. If I use xrandr to reduce the video mode to 1280x800 (which
the monitor also supports), that displays correctly. Anyhow, I
thought I ought to pass along this information.
I also have an nvidia card that should drive the monitor OK,
but, since the monitor supports multiple video cables in, I expect to
keep another DVI cable plugged into my ATI X1250 rs690 in case anyone
would like me to try a patch.
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