Samsung 205BW DDC problem
Daniel Ciocea
daniel.ciocea at eosystems.ro
Tue Jun 5 14:16:48 PDT 2007
Since this is my first post on the list, I might be posting an already
known problem, but anyway here is my description:
I recently tried to setup my G965 to work with Samsung 205BW monitor on
1650x1050 native resolution. I have the current Slackware installed, so
I am using the xf86-video-intel-2.0.0 driver. Using the normal DDC set
on, I get the list of the video modes accepted by the monitor like this:
...
(II) intel(0): Using hsync ranges from config file
(II) intel(0): Using vrefresh ranges from config file
(II) intel(0): Printing DDC gathered Modelines:
...
(II) intel(0): Modeline "1680x1050" 146.25 1680 1784 1960 2240 1050
1053 1059 1089 -hsync +vsync
(II) intel(0): Modeline "1280x1024" 109.00 1280 1368 1496 1712 1024
1027 1034 1063 -hsync +vsync
(II) intel(0): Modeline "1280x960" 101.25 1280 1360 1488 1696 960 963
967 996 -hsync +vsync
(II) intel(0): Modeline "1152x864" 104.00 1152 1224 1344 1536 864 867
871 905 -hsync +vsync
(II) intel(0): Modeline "1680x1050" 146.25 1680 1784 1960 2240 1050
1053 1059 1089 +hsync -vsync
(II) intel(0): EDID vendor "SAM", prod id 541
...
Anyway th monitor is actually displaying an 1400x1050 60Hz PN
resolution, no matter my changes in xorg.conf are.
After some investigations, I disabled the DDC and got the wanted
resolution (1680x1050) but the fonts are quite messed up (I read some
already known issues about this). In my opinion the error is caused by
the DDC information from the monitor, which determines the selection of
the wrong synchronization signals polarity: "+hsync -vsync".
I tried my own modelines with the other polarities (e.g "-hsync
-vsync"and "NoDDC") and the native resolution is correctly set, but the
fonts problem is still present.
Can you tell me how can I get an work around for this wrong behavior?
Thanks,
Daniel
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