| 2009-07-02 04:10:41 |
Lee S Parsons |
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? |
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?
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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. |
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