Arch Linux

damoppi

Member

From: Germany

Registered: 2008-02-10

Posts: 18

systemlags with high cpu usage of the Xserver

Hi,

I installed the 64bit Arch on my laptop (fsc amilo XI2550) and use kdemod3. After a while I noticed that my system lags every 10-20 seconds for a fraction of a second. Not the hole system hangs, e.g. amarok keeps playing without any problems. I noticed similar problems with the 32bit Version. I allready tried the kernelparameter "nopat" I found somewhere in the forum, but didn't fix the problem.

Maybe important to mention ist that the cpu usage of the X-server raises to something between 40 and 60% when the system hangs ( top in a konsole). I don't know if the problem is related to my graphic card, an ati HD2700, because the relevant

lspci -v

entry is

01:00.0 VGA compatible controller: ATI Technologies Inc Device 9583 (prog-if 00 [VGA controller])
    Subsystem: Fujitsu Siemens Computers Device 1107
    Flags: bus master, fast devsel, latency 0, IRQ 16
    Memory at d0000000 (64-bit, prefetchable) [size=256M]
    Memory at cfef0000 (64-bit, non-prefetchable) [size=64K]
    I/O ports at 2000 [size=256]
    [virtual] Expansion ROM at cfe00000 [disabled] [size=128K]
    Capabilities: [50] Power Management version 3
    Capabilities: [58] Express Legacy Endpoint, MSI 00
    Capabilities: [a0] Message Signalled Interrupts: Mask- 64bit+ Queue=0/0 Enable-
    Capabilities: [100] Vendor Specific Information <?>
    Kernel driver in use: fglrx_pci
    Kernel modules: fglrx

I had a lot of trouble with the card (system locks whith kdm, gdm xdm,.....)  and earlier kernel versions, but it seems to work now.
Does anybody experience simlar problems?

Last edited by damoppi (2008-09-21 12:07:37)