On Mar 17, 08 11:47:11 -0400, Leif Gruenwoldt wrote:
$ xrandr
Please paste the output of xrandr --verbose
Manually setting it to the native causes the display to go black. $ xrandr --output DVI-D_1 --mode 1920x1200
Again, please try xrandr --verbose --output DVI-D_1 --mode 1920x1200 and paste the output. The log looks good, saying for DVI-D_1: (II) RADEONHD(0): Modeline "1920x1200"x60.0 154.00 1920 1968 2000 2080 1200 1203 1209 1235 +hsync -vsync (74.0 kHz) OTOH - can you verify your Xserver version? There was one infamous sync polarity bug. Please try xrandr --newmode 1920x1200_a 154.00 1920 1968 2000 2080 1200 1203 1209 1235 +hsync -vsync xrandr --newmode 1920x1200_b 154.00 1920 1968 2000 2080 1200 1203 1209 1235 -hsync +vsync xrandr --addmode DVI-D_1 1920x1200_a xrandr --addmode DVI-D_1 1920x1200_b (might need a newer xrandr for that, or try +HSync or +Hsync, and vice versa with vsync, even mixed cases). and then setting xrandr --verbose --output DVI-D_1 1920x1200_a or 1920x1200_b, respectively.
The following info from my Xorg.0.log seems highly suspicious:
(II) RADEONHD(0): Not using mode "1920x1200" (mode clock too high)
No, just the default non-reduced-blanking 1920x1200 has a too high clock
rate.
Matthias
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Matthias Hopf