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KernelModesetting

Kernel Mode Setting (KMS) provides faster mode switching for X and console. It also provides native-resolution VTs on some laptops and netbooks which, prior to this, would use some standard mode, e.g. 800×600 on a 1024×600 panel.

To enable, you need:

Intel

i915

From xserver-xorg-video-intel version 2:2.9.1-2, KMS is enabled by default on Linux, by the way of the file /etc/modprobe.d/i915-kms.conf. So from Squeeze on, no hand modification should be necessary anymore.

Known bugs

ATI

radeon

From xserver-xorg-video-radeon version 1:6.12.192-2, KMS is enabled by default on Linux, by the way of the file /etc/modprobe.d/radeon-kms.conf. So from Squeeze on, no hand modification should be necessary anymore.

Known bugs

Disabling

KMS is disabled at run time in Debian kernel images by default.1 It is enabled via modprobe configuration files provided by the xserver-xorg-video-intel and xserver-xorg-video-radeon packages.

To disable KMS use, either:

Resources