radeon 9000 (rv250) dvi 1920x1200 troubles

[Andre Puschmann]

Alex Deucher wrote:
> On Tue, May 13, 2008 at 12:33 PM, Alex Deucher <alexdeucher at gmail.com> wrote:
>> On Tue, May 13, 2008 at 12:26 PM, Andre Puschmann
>>
>>
>> <andre.puschmann at stud.tu-ilmenau.de> wrote:
>>  > Alex Deucher wrote:
>>  >  > On Tue, May 13, 2008 at 11:08 AM, Andre Puschmann
>>  >  > <andre.puschmann at stud.tu-ilmenau.de> wrote:
>>  >  >> Alex Deucher wrote:
>>  >  >>  > (II) RADEON(0): Modeline "1920x1200"x60.0  154.00  1920 1968 2000 2080
>>  >  >>  > 1200 1203 1209 1235 -hsync +vsync (74.0 kHz)
>>  >  >>  >
>>  >  >>  > the problem is you are using xserver 1.3 which had a bug when parsing
>>  >  >>  > sync polarity from edid.  the sync polarities are reversed and many
>>  >  >>  > LCDs don't like that.  try the following modeline:
>>  >  >>  > Modeline "1920x1200R"  154.00  1920 1968 2000 2080  1200 1203 1209
>>  >  >>  > 1235 +hsync -vsync
>>  >  >>  >
>>  >  >>  > xrandr --newmode "1920x1200R"  154.00  1920 1968 2000 2080  1200 1203
>>  >  >>  > 1209 1235 +hsync -vsync
>>  >  >>  > xrandr --addmode DVI-0 "1920x1200R"
>>  >  >>  > xrandr --output DVI-0 --mode "1920x1200R"
>>  >  >>  >
>>  >  >>  > Check to see if your distro provides a patch to fix that or upgrade to
>>  >  >>  > a newer xserver.
>>  >  >>  >
>>  >  >>  > Alex
>>  >  >>
>>  >  >>  Thanks for your prompt reply.
>>  >  >>  Unfortunately this doesn't work either. I already tried this settings as
>>  >  >>  this was one of the modelines I found with google.
>>  >  >>
>>  >  >>  I also tried the newest Ubuntu Live-CD with the same results (xserver
>>  >  >>  1.4). But I will check again, if this version auto-detects the edid
>>  >  >>  values correctly.
>>  >  >>
>>  >  >>  And even worse, my monitor doesn't provide any error output. I just
>>  >  >>  stays black.
>>  >  >>
>>  >  >>  Maybe this problem is really because my video card can't provide the
>>  >  >>  right signal?
>>  >  >>  Is there anybody out there who runs a radeon 9000 with a resolution of
>>  >  >>  1920x1200px?
>>  >  >
>>  >  > Can you try the VGA port rather than the DVI port?
>>  >
>>  >  Sure,
>>  >
>>  >  the VGA port works with the above settings.
>>  >  But in my opinion the signal isn't very good, it looks a bit blurry.
>>  >
>>  >  Maybe that helps to isolate the problem.
>>
>>  Perhaps the monitor doesn't like the bios provided TMDS PLL, does this
>>  option help (assuming your driver is new enough):
>>  Option "DefaultTMDSPLL" "TRUE"
> 
> Another possibility is that if this is a thinkpad, IBM only rates the
> DVI port up to 1600x1200.
> 
> Alex

Hey Alex,

no, it's a Dell Latitude D600.
The suggested option doesn't work either.
In ubuntu 7.10 this option is not documented (i.e. "man radeon" shows
nothing) but the xorg log shows no "unsupported option" so i guess it is
implemented.
In Ubuntu 8.04 this switch is documented but it also doesn't work (I
mean it doesn't solve the problem :-).

I am not sure if this is driver/settings related problem or a hardware
one?! What else can I try? Install Windows?

Thanks very much

Best regards,
	Andre