Timer/clock runs up to 4 times to slow

After using openSuse 10.2 on a elder laptop without having any problems for a long time, I was so venturous to buy a new laptop without any OS.

After having many problems I could finally install openSuse 11 with the boot options noapic and acpi=off on it.

Everything except the power management ( I think because of acpi=off) seemed to work fine. But then I noticed that the clock always lost many time and later that some videos run about 4 times to slow. Also the windows popup effect runs very slow.

So I searched for the reason and noticed that the clock runs too slow ( it also takes 4 seconds for just one second on the system).

After a reboot the problem always disappeared for a while, but then it comes again. And I’m not able to reproduce this. After a slow down I made a reboot and did the same as before and the clock runs correctly.

I noticed only that it mostly appears after connecting to the internet. (At the moment I have a new effect that the time runs about 2 times to slow, the last days it was always four times)

I’ve installed all updates from the Online Update.


Intel Pentium Dual Core 2 x 2 Ghz
nVidia 9300m GS (runs perfect with nVidia driver)
250 Toshiba GB Sata HD
SIS 191 Network device

Linux i686
openSUSE 11.0 (i586)
KDE: 3.5.9 “release 49.1”

Another question I have, How I can discover if the Kernel supports the power managament of my Laptop.