Found a link that might be helpful:
http://analogbit.com/fix_nvidia_edid
You can use nvidia-settings to get your EDID info. Run nvidia-settings, click
on DFP-0, then click "Acquire EDID..."
Store the file to television-edid.bin
Install the package edid-decode and do
edid-decode television-edid.bin
This gives the following output:
...
First detailed timing is preferred timing
Established timings supported:
720x400@70Hz
640x480@60Hz
640x480@67Hz
640x480@72Hz
640x480@75Hz
800x600@56Hz
800x600@60Hz
800x600@72Hz
800x600@75Hz
832x624@75Hz
1024x768@60Hz
1024x768@70Hz
1024x768@75Hz
Standard timings supported:
Detailed mode: Clock 74.250 MHz, 708 mm x 398 mm
1280 1720 1760 1980 hborder 0
720 725 730 750 vborder 0
+hsync +vsync
Monitor ranges: 56-76HZ vertical, 31-61kHz horizontal, max dotclock 80MHz
...
Thus the television says it can do 1024x768@75Hz, and it is not NVIDIAS
fault that it gets such a signal that it cannot display well when
switching to 1024x768.
--
You received this bug notification because you are a member of Ubuntu-X,
which is subscribed to nvidia-settings in Ubuntu.
https://bugs.launchpad.net/bugs/1313274
Title:
After upgrading to 14.04, nvidia-settings crashes with "BadValue" X
Window System error
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/nvidia-settings/+bug/1313274/+subscriptions
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