xorg 6.9.0 with ATI X850 Pro, stuck in low resolution, no 1280x1024 possible

[Peter Jeremy]

On Sun, 2006-Jan-29 10:04:32 +0100, Andreas Klemm wrote:
>Installed now 6.9 completely new but no change. Stuck in
>VGA alike resolution :-//

The log is reporting two monitors.  The problem seems to be that
when it tries to merge them, it winds up using default refresh rates
which means it can only run in VGA mode.

Suggestions:
1) Try disabling one of the monitors or 
2) Add a second Monitor section describing the builtin LCD  panel.
3) Explicitly specify the horizontal/vertical sync rates (copy the ones
   reported by DDC into your xorg.conf file).
4) Disable MergeFB

>(II) RADEON(0): EDID data from the display on port 1 ----------------------
>(II) RADEON(0): Manufacturer: MED  Model: 89ad  Serial#: 33647
...
>(II) RADEON(0): 1280x1024 at 75Hz
...
>(II) RADEON(0): Monitor name: MD30919PO S09
>(II) RADEON(0): Ranges: V min: 56  V max: 76 Hz, H min: 30  H max: 83 kHz, PixClock max 140 MHz
...
>(II) RADEON(0): Validating modes on Primary head ---------
>(II) RADEON(0): TMDS PLL from BIOS: 16500 b011c
>(II) RADEON(0): Panel infos found from DDC detailed: 1280x1024
>(II) RADEON(0): Valid Mode from Detailed timing table: 1280x1024
>(II) RADEON(0): Valid Mode from standard timing table: 1280x1024
...
>(II) RADEON(0): Validating CRTC2 modes for MergedFB ------------ 
>(II) RADEON(0): CRT2 Monitor: Using default hsync range of 28.00-33.00 kHz
>(II) RADEON(0): CRT2 Monitor: Using default vrefresh range of 43.00-72.00 Hz
>(II) RADEON(0): Clock range:  20.00 to 500.00 MHz

This seems to be the problem.

-- 
Peter Jeremy