Thank you for your insight. However, i am not able to test this solution on my system, as I decided to solve the problem by formatting my hard drive and installing a different operating system. I was not able to wait for a solution to this problem, I needed to accomplish a usable system sooner rather than later and kubuntu 9.04 was clearly not a usable system.
If this problem is resolved by the ubuntu group in the future I may consider reinstalling this OS. On Fri, Jul 24, 2009 at 12:40 PM, Psychotron <r...@gmx.de> wrote: > I might have the same problem. For me it seems to be composite related. > So Xorg uses full CPU when composite is enabled and running. So either > disabling composite in xorg.conf or suspending it (Shift-Alt-F12 with > KDE4 Kwin) gives normal CPU usage. Resuming it lets it go up again to > 100%. > > I did not have this problem with my nvidia card and proprietary drivers. > > I can't check the fglrx driver as my card is not supported anymore. > > I'm using Jaunty, and the card is an Radeon R420 > > -- > Excessive CPU usage after 9.04 upgrade > https://bugs.launchpad.net/bugs/394300 > You received this bug notification because you are a direct subscriber > of the bug. > > Status in Ubuntu: New > > Bug description: > 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? > > > ----- > Additional work on the same system has shown that this is almost certainly > related to the video driver. System has ATI Radeon Mobility graphics. When > the commercial radeon drivers (as in xorg-driver-fglrx) are installed and > chosen through xorg.conf, system will boot and allow login, but XOrg stays > at a near constant 95% of CPU. When installed and not chosen (running VESA > instead), system does not complete boot process; though is accessible > remotely via ssh. When uninstalled and using VESA through xorg.conf, system > does boot and behave normally, however VESA graphics default to 640x480. > > Tried doing the same with the "ati" open source drivers, this did not solve > the problem, rather the same problems observed with the xorg-driver-fglrx > were seen. > -- Excessive CPU usage after 9.04 upgrade https://bugs.launchpad.net/bugs/394300 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
