Created attachment 16203 [details] Xorg log Trying xrandr I got a weird maximun screen size. Talking about this with somebody, he pointed that it may be because nouveau can't access ddc info. It's a mainboard integrated NV4E (gforce 6150LE / cuadro nvs 210s)
Created attachment 16209 [details] [review] Attempt at C51 I2C Hi, please try this patch, and attach a log with the results
I've tryed the patch and it fixes the ddc problem. Now nouveau gets the list of modelines and works with it, but ignores the xorg configured resolution (1400x1050) that isn't in the ddc list, and has worked previously with nouveau and nvidia drivers.
A log file with Option "ModeDebug" "on" added to your xorg.conf device section would help.
Created attachment 16237 [details] New log with ModeDebug activated as requested
Created attachment 16238 [details] xorg.conf as requested by malc0 at irc
The loss of 1400x1050 is due to your xserver not having commit 4b5b6e7baab58072a983d2ec136965f404c3a74a "fix max clock unit". You either need a newer xserver, or to follow instructions III.5 in http://wiki.debian.org/XStrikeForce/HowToRandR12, with a modeline of Modeline "1400x1050_74.8" 155.80 1400 1464 1784 1912 1050 1052 1064 1090 +hsync +vsync
Patch pushed to git, so C51 DDC is now fixed. As for your 1400x1050 issue, I suggest trying the howto/modeline suggested in comment 6
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