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So, Ubuntu doesn't come with drivers for my ATI Radeon HD 5650 (mobility), and I tried about 3 different drivers, and all failed.

My question is, can I just disable my ATI video card and use the onboard one, without installing the ATI drivers? And how? (I heard nVidia cards allow this if you have the software and driver installed)

Eduard Luca
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1 Answers1

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http://planetoss.com/articles/how-to-disable-the-discrete-amd-graphics-card-in-linux/ Follow this article and you can disable it.

in short

sudo -s
cat /sys/kernel/debug/vgaswitcheroo/switch
echo OFF > /sys/kernel/debug/vgaswitcheroo/switch
cat /sys/kernel/debug/vgaswitcheroo/switch

See the difference of the cat, you can see that the dedicated card "DIS" is "Off" instead of "Pwr"

If it really works and you want to disable it on every startup, modify "etc/rc.local". Just follow the article I posted above.

Shing Kae
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