From Fedora Project Wiki
Description
This test case tests whether display rotation work successfully with the Radeon driver.
How to test
- Connect as many displays as you can to the available ports on your display adapter
- Ensure the 'nomodeset' kernel parameter is not enabled in your bootloader configuration
- 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
- Verify that the graphical environment starts correctly and shows the same screen on each display (clone mode)
- Open a console and run the command xrandr. Take a copy of the results
- 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
Expected Results
- 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