Description of problem:
When using Monitor Preferences to configure an external screen of lower width above my laptop's screen of higher width, a gnome-panel is at the top of the lower (laptop) screen (probably should be at top of top screen since preference was set to top?), its bottom flickers, and gnome-panel takes up max CPU.
Version-Release number of selected component (if applicable):
Fedora 13 with all updates
Steps to Reproduce:
1. Connect an external monitor
2. Make sure gnome-panel (either launcher with shortcuts and such or the taksbar worked for me) is at the top of the desktop
3. Open System -> Preferences -> Monitor
4. Set a monitor (lower width) to top and a monitor below (higher width)
5. The desktop should now have issues rendering and become sluggish. With the exception of gnome-panel, the rest of the desktop should be stable after the "want to keep" dialogue times out or you are able to click revert.
Alternative ways to reproduce:
-It is also possible to trigger this by having gnome-panel at the bottom and then using Panel Properties to switch it to top after stabling being in the desired monitor configuration. This is worse because you can no longer log into a sane session as it gets auto saved to top.
-I think I successfully didn't have issues when the resolution difference was small, but having issues now
Similar situations that will NOT reproduce it:
-The ONLY happens if the external monitor is above. ie this will work without issue at any resolution if the external monitor is to the right or bottom.
-Moving gnome-panel to anywhere but on top
-Having the monitor with gnome-panel at a resolution equal to or lower than the upper panel
CPU loaded by gnome-panel in specified configuration and desktop is unusable
gnome-panel does not take excessive CPU power and can be safely moved around the desktop.
gnome-panel can briefly be seen on the top screen before sliding to the bottom screen. The bottom of gnome-panel flickers. A large black area was also visible to right. Changing the position of how they line up in Monitor preferences doesn't seem to effect the bug.
IBM T60p + Dell 1800FP.
External monitor resolution (want on top): 1280 x 1024
Laptop monitor resolution: (want on bottom): 1680 x 1050
I considered trying to compile and install 2.30.2, but am not sure with the compatibility. Please let me know if I should try this.
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