Description

This test case tests whether display rotation work successfully with the Radeon driver.

How to test

Ensure the 'nomodeset' kernel parameter is not enabled in your bootloader configuration (unless you need it for basic X operation to succeed)
Ensure the file /etc/X11/xorg.conf does not exist, or is a known-good configuration file that uses the 'radeon' driver
Shut your system down entirely, then start it up again
Run the GNOME display configuration tool, gnome-display-properties. Try rotating the primary display - change the Rotation drop down and hit apply
Try and change back to the normal orientation

The rotation should apply correctly and the rotated screen should display with no artifacts. Returning to the normal orientation should also work smoothly with no artifacts