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I have a dual boot machine with Windows Vista Home and Ubuntu 14.04 just recently installed. It has a GeForce 6100 nForce 405 internal graphics processor. In Vista I can set my monitor to 1280x720 but in Ubuntu 1024x768 is the highest that will work. I use an Olevia OLEVIA 23" 720p LCD HDTV LT23HVX for my monitor. I know it says that the 1024x768 is the highest it can do on VGA but like said Vista will do 1280x720, I think even 1280x1024? Any help would be appreciated.

Kaz Wolfe
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Alex Marten
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1 Answers1

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Please open this file

sudo gedit /etc/X11/xorg.conf

Find the section "device" and add this line to it 

Option"ModeValidation" "NoMaxPClkCheck"

Now reboot and see if your resolutions are back

Mark Kirby
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  • Thanks for the answer but all that did was give me dispay errors on restart. I had to restart in recovery mode and it found the errors and sent a report. Any other ideas are welcome, but I'm starting to think I won't be able to change this. – Alex Marten Sep 02 '14 at 01:54
  • OK remove that line for xorg.conf, can you find if you have an Optimus GPU ( I think you do), If so then sudo apt-get purge nvidia* (* is not a typo) and try this http://askubuntu.com/questions/452556/how-to-set-up-nvidia-optimus-bumblebee-in-14-04 – Mark Kirby Sep 04 '14 at 06:38