Red Hat Bugzilla – Bug 816434
Sluggish Gnome Shell Performance With More Than One Monitor
Last modified: 2013-02-13 15:32:37 EST
Description of problem:
Gnome Shell Performance degrades significantly when using more than one monitor.
Version-Release number of selected component (if applicable):
Have tried fedora 15 to 17 (beta) with same results.
OpenGL renderer string: Gallium 0.4 on AMD RV620
direct rendering: Yes
Steps to Reproduce:
1. Run gnome shell session with single display (very snappy -- "normal")
2. Enable second monitor (or untick mirror displays)
3. Very sluggish performance (dragging windows, activities overview etc.)
Very sluggish performance (dragging windows, activities overview etc.)
Similar speed to single monitor or "mirrored" setup
Running gnome in fallback mode ensures a snappy response regardless of second display.
Happy to provide any further information to help troubleshoot. I'd say this is more likely an issue with the Radeon drivers' 3D performance.
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