[CentOS] powernow-k8 in newer centosplus kernel
mail-lists at karan.org
Fri Apr 10 12:16:19 UTC 2009
Mark Pryor wrote:
> Using kernel:
> the cpu throttling works as desired (see 2 traces below)
> When I update to the newer xx-128.1.6 centosplus kernel all the throttling stops and the box runs at highest speed.
This is an issue that came up in the early 5.2 days, and has been
recurring since. I lost cpuspeed control on my desktop at home as well (
amdx24800/m2n) with the kernel update. Have not started digging into
this, but the last time I did upstream blamed it on badly done acpi code
in the system BIOS. It *should* now be possible to blacklist the
powernow-k8.ko code and let the kernel fallback to using the generic
acpi layer again. YMMV.
Karanbir Singh : http://www.karan.org/ : 2522219 at icq
More information about the CentOS