On Wed, 2006-08-16 at 12:13 +0200, Simen Thoresen wrote: [..] > > The core functionality of this powermanagement feature is compiled into > the kernel (or as a module). On my kernel (2.6.16.6), the feature is > built as > CONFIG_X86_POWERNOW_K8=m > CONFIG_X86_POWERNOW_K8_ACPI=y > > ...for my Athlon64 cpu, in i386 mode - I assume it will be similar on > your system. > > On my system (no errors for a week or so), I am not only not running the > userspace manager, but I am also /not/ loading the module.
You can control the CPUFREQ governors with sysfs. Try modprobing the cpufreq_ondemand and echo ondemand to the scaling governor. "echo ondemand > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor. Echo performance to make the cpu stay at maximum performance. Powernow will not only lower the cpu's frequentie but also the voltage. And as the memory controller in on the cpu with AMD64 this might cause the dma errors. Not sure about the above but if all the people with dma errors have an AMD64 this could be the issue. I will be replacing my current amd64 3200+ system with and new amd64 x2 5000+ AM2. The old one will be replacing my athlon-xp as mythtv box so I can help test if still needed. In 2 or 3 weeks I hope. Greets Sander _______________________________________________ ivtv-users mailing list [email protected] http://ivtvdriver.org/mailman/listinfo/ivtv-users
