unknown monitor problem

Posted by dev on Ask Ubuntu See other posts from Ask Ubuntu or by dev
Published on 2011-07-20T04:42:10Z Indexed on 2011/11/15 2:11 UTC
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monitor

I'm using HCL P30 laptop with 1280x800 60 Hz default resolution.But none of the ubuntu versions are capable of detecting my monitor.In 11.04 the resolution is 1024x768 61 Hz. When I run xrandr command in terminal,it returns

xrandr: Failed to get size of gamma for output default Screen 0: minimum 640 x 480, current 1024 x 768, maximum 1024 x 768 default connected 1024x768+0+0 0mm x 0mm 1024x768 61.0* 800x600 61.0
640x480 60.0

So,how can I set it to 1280x800 60 Hz. plz reply soon. thnx in advance.

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