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How to change resolution in Ubuntu 10.04, where xvinfo is showing no adapters present?

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1answer
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I have 2 graphics cards, the output from the lspci: 01:00.0 VGA compatible controller: ATI Technologies Inc RV770 [Radeon HD 4850] 02:00.0 VGA compatible controller: ATI Technologies Inc RV710 ...
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2answers
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I'm having a problem installing the drivers for my video card. I've just finished installing the driver, rebooted the OS, and the monitor starts up in energy saving mode and doesn't boot Ubuntu. What ...
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