QA » QE-Workstation

Steps:
1. Open ""Settings ->
Displays"", enter the current display configuration (usually there are
only one if you have just one monitor connected).
2. In the ""Resolution"" drop down list, select a new resolution value (eg. 800*600) and apply.
3. Select ""Keep Changes"" within 20 seconds.
4. Switch back to original resolution by the same steps.

Note:

Original case summary is : ""XGL: Change screen resolution with XGL
enabled""
The summary and content were changed because the XGL was abandoned for
SLED12. New components in GNOME 3 take place of this function in a way.

Expected Result:
vp1. The configuration window for the display come out.

vp2. The screen changed to the selected resolution after a short blinking.
vp3. The screen kept at the target resolution.
vp4. The screen restored to it's original resolution.