[i945/i950] X is painfully slow on Mac mini Core Duo 1.66 after upgrading from Intrepid to Jaunty
| Affects | Status | Importance | Assigned to | Milestone | |
|---|---|---|---|---|---|
| xserver-xorg-video-intel (Ubuntu) |
New
|
Undecided
|
Unassigned | ||
Bug Description
Binary package hint: xserver-
Build Version/Date:
Description: Ubuntu jaunty (development branch)
Release: 9.04
Codename: jaunty
xserver-
Installed: 2:2.6.3-0ubuntu4
Candidate: 2:2.6.3-0ubuntu4
Version table:
*** 2:2.6.3-0ubuntu4 0
500 http://
100 /var/lib/
Environment used for testing:
Mac mini Core Duo 1.66, 2 GB RAM, Intel GMA950 (dmesg reports as 945GM), 20" DVI Cinema Display (1680x1050)
Summary:
X is painfully slow after upgrading from Intrepid to Jaunty. Performance and screen redraw on Intrepid was quick and clean.
With Visual Effects enabled switching workspaces takes a couple seconds as the choppy animation jumps from one workspace to the next. Moving windows around with Wobbly Windows enabled again results in choppy animations as the window jumps around the screen.
With Visual Effects disabled it becomes usable but is still much slower than Intrepid. Switching workspaces happens instantly however it then takes a second or two for windows to slowly paint in and draw one by one. Moving windows around is quick, however.
* CPU usage hovers around a constant 5% on both cores at all times
* CPU usage jumps to 30% to 50% on both cores when switching workspaces
* CPU usage jumps to 50% to 75% on both cores when moving windows and no other windows update while that window is being moved
| description: | updated |
| Sean Sosik-Hamor (sciri) wrote | #1 |
Completely untechnical circumstantial update:
After rebooting to see if that would clear up the performance issues I then booted off a Jaunty Beta LiveCD.
* Performance from the Jaunty Beta LiveCD was extremely fast and on-par with Intrepid with Visual Effects enabled
* Performance from the Jaunty Beta LiveCD was sluggish with Visual Effects disabled; same behaviour with windows redrawing slowly after switching workspaces
Performance mysteriously improved slightly after rebooting from the LiveCD back to the internal hard drive. The system is still sluggish with Visual Effects disabled but moving windows and switching workspaces with Visual Effects enabled is now usable but still not as quick as Intrepid was.