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My environment is as follows: Laptop: Thinkpad X220, Intel HD graphics family(i915). Dual-OS: Windows 7 professional, Ubuntu 10.10.

My problem is I cannot enable the desktop effects. I have installed the xserver-xorg-video-intel using this commands:

sudo add-apt-repository ppa:glasen/intel-driver
sudo apt-get update
sudo apt-get install xserver-xorg-video-intel

and reboot.

However, when I attempted to enable the desktop effects, it displayed "searching available drivers", "desktop effects cannot enabled". When I opened the "Additonal Drivers", there was no corresponding video driver available.

Who can tell me whether there is a trick when install or load the Intel i915 driver on Ubuntu 10.10 or not? Thanks a lot.

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Also, try running:

glxinfo | grep direct

You shoul'd see an output telling you Direct rendering: yes Otherwise, your graphic card is not being properly detected.

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