[link|http://www.xfree86.org/4.3.0/RELNOTES2.html|http://www.xfree86.o....0/RELNOTES2.html]
2.3. X Server and Extension Updates
Support for the RandR extension has been partially integrated into the XFree86 server, providing support for resizing the root window at run-time.
The Mesa version used for OpenGL\ufffd 1.3 and DRI driver support has been updated to 4.0.4.
The XFree86 server's hot keys (including those for switching modes and virtual terminals) can now be configured via XKB. Previously they were hard coded. An X server configuration option has been added to allow the VT switching hot keys to be disabled.
If you have X >= 4.3 and your video card supports it, you can set up the RandR extension to do rotation at the X server level - a kernel recompile should not be required.