Comment 47 for bug 89746

I have a dv9000 with turion 64 X2. Running 64 bit Ubuntu, kernel 2.6.20-16 with the same results.

I have tried all suggested alternatives, but I am currently booting with " noapic nosmp", which sacrifices one core. However doing this resolves the interrupt problem, which lowers CPU usage to 3% when idle, and allows frequency scaling to work (and hence makes the system usable as a laptop).

Everything I have tried works, (including wireless through ndiswrapper); so until this issue is resolved (kernel is fixed upstream), I will continue to boot with nosmp. Without this option the CPUs get wasted servicing interrupts, so disabling one CPU actually makes the system faster (and usable!).