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Ubuntu Lucid Installation Guide

844 bytes added, 04:25, 19 June 2010
Add Direct2D tweak
=HOW TO UPDATE DRIVERUpdating the Driver=
DO NOT try to install a new version over an old one. Follow the REMOVE DRIVER 'Removing the Driver' section below to remove your existing driver, and then you can start at 'Downloading the latest Catalyst' to install the new one.
=HOW TO REMOVE DRIVERRemoving the Driver=
$ sudo /usr/share/ati/ # (if you installed a downloaded version of Catalyst)
= Issues =
== Slow Maximizing Windows/General 2D Slowness ==
As of Catalyst 10-6, a new, faster 2D acceleration method is used as the default, replacing the old XAA method. The new acceleration code was also available in Catalyst 10-2 through 10-5 (including the Catalyst that ships with Lucid), though it was not used by default. If you're using one of those versions, you can try the new acceleration code with the following command:
$ sudo aticonfig --set-pcs-str=DDX,Direct2DAccel,TRUE
Restart X to apply the change. If you experience issues and want to return to the older, stable code:
$ sudo aticonfig --del-pcs-key=DDX,Direct2DAccel
If you're using Catalyst 10-6 or later, and are having problems with 2D operations, you may want to fall back to the old XAA. This command will do that:
$ sudo aticonfig --set-pcs-str=DDX,ForceXAA,TRUE
== Unsupported Hardware Watermark ==

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