Public bug reported:
I recently upgraded my laptop from Kubuntu 8.10 to Kubuntu 9.04. Laptop
has 2 gbs of ram, 1.6ghz P4m. Ran fine under 8.10; however it is
unusable in 9.04 due to high CPU usage of XOrg.
When not running any applications beyond what is setup in KDE (as in, no
web browser, no email, no text editor, no games ...) I find XOrg using
98% of my CPU or more. Even Konsole windows are nearly unusable.
I have found that no amount of time seems to resolve this problem, I can
leave the system on overnight and XOrg will still be at 98% or more. I
have also found that if I ssh in to the system instead, response is as
expected; it seems to be driven by the local setup. If I log in locally
first, then log in from another system while still logged in locally, I
can see the excessive CPU usage of XOrg. However if I log out locally,
leaving the system running, I can ssh in and things are normal (XOrg at
less than 10% CPU).
I have tried reconfiguring xorg.conf via dpkg-reconfigure, that did not
solve the problem. My current xorg.conf does not have a driver line in
it; is there a different file that specifies the video driver?
** Affects: ubuntu
Importance: Undecided
Status: New
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Excessive CPU usage after 9.04 upgrade
https://bugs.launchpad.net/bugs/394300
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