Bug 816434 - Sluggish Gnome Shell Performance With More Than One Monitor
Sluggish Gnome Shell Performance With More Than One Monitor
Product: Fedora
Classification: Fedora
Component: gnome-shell (Show other bugs)
x86_64 Linux
unspecified Severity medium
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Assigned To: Owen Taylor
Fedora Extras Quality Assurance
Depends On:
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Reported: 2012-04-26 00:23 EDT by Peter C
Modified: 2013-02-13 15:32 EST (History)
4 users (show)

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Fixed In Version:
Doc Type: Bug Fix
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Last Closed: 2013-02-13 15:32:33 EST
Type: Bug
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Description Peter C 2012-04-26 00:23:23 EDT
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

How reproducible:

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.)
Actual results:
Very sluggish performance (dragging windows, activities overview etc.)

Expected results:
Similar speed to single monitor or "mirrored" setup

Additional info:
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.
Comment 1 Fedora End Of Life 2013-01-16 11:39:44 EST
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Comment 2 Fedora End Of Life 2013-02-13 15:32:37 EST
Fedora 16 changed to end-of-life (EOL) status on 2013-02-12. Fedora 16 is 
no longer maintained, which means that it will not receive any further 
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