Hi, Is anyone else seeing odd interrupt problems on nforce4? I have an Asus A8N-SLI Deluxe where the audio doesn't work properly (sounds jitters a lot) with APIC switched on; booting the kernel with the "noapic" option helps a little though the audio still skips occasionally under load. I also see message in dmesg about "losing ticks" under heavy disc I/O. Losing some ticks... checking if CPU frequency changed. [...] warning: many lost ticks. Your time source seems to be instable or some driver is hogging interupts rip nv_interrupt+0x8c/0xa0 [sata_nv] I haven't been able to get cpufreq working either, though that's less of an issue. Loading the powernow module produces the message: powernow-k8: Found 1 AMD Athlon 64 / Opteron processors (version 1.00.09e) powernow-k8: BIOS error - no PSB The board claims to support "Cool'n'Quiet". No idea what a PSB is or why my machine doesn't have one though. (Full disclosure - it's actually running Ubuntu at the moment with stock Ubuntu 2.6.10 kernel, but I'm not on any Ubuntu lists and there seems to be a lot of x86_64 expertise on this list!) Cameron.
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