On Fri, 18 Jan 2013 12:37:17 +0100 Borislav Petkov <bp@xxxxxxxxx> wrote: > On Thu, Jan 17, 2013 at 07:40:44PM -0600, Leonid Isaev wrote: > > Arrh, modprobe still does not exit cleanly with this... > > As I said already above: > > >> That's correct - we say ENODEV on your CPU which supports hardware > >> P-states and hand off to acpi-cpufreq which has that functionality > >> now. > > It is supposed to work that way: we return an error from the powernow-k8 > init function so that it doesn't load but hand off to acpi-cpufreq so > that it gets loaded instead. > > > > But, we also have the CPU autoprobing deal: > > > > > > http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=644e9cbbe3fc032cc92d0936057e166a994dc246 > > > > > > so, *actually*, powernow-k8 should be loaded by default. I dunno, maybe > > > upgrade udev on your distro? > > > > Udev 196 and 197 + linux <= 3.6.11 yield correct CPU autoprobing. However, > > udev 197 + linux 3.7.2 do not. I haven't tested udev 196 with 3.7.2 though, > > but it does not look like a udev issue. > > Hmm, I'll bet this has something to do with the fact that HW_PSTATE is > in another CPUID function on AMD than on Intel and udev doesn't see that > bit to load acpi-cpufreq automatically. > > Before I go and install archlinux here, where can I get the udev sources > which are in your archlinux installation to stare at them a little? :) > Especially the cpu autoprobing part which supposedly uses the cpuid > kernel driver. They are vanilla systemd-197 (http://www.freedesktop.org/software/systemd/systemd-197.tar.xz) with only 1 dbus-related patch (https://projects.archlinux.org/svntogit/packages.git/tree/trunk?h=packages/systemd). > > > I don't know if it matters, but I also have AMD microcode "0x10000c8", > > albeit it didn't cause problems with 3.6.11... > > Nah, microcode doesn't have anything to do with it. > > Thanks. > Thanks, L. -- Leonid Isaev GnuPG key: 0x164B5A6D Fingerprint: C0DF 20D0 C075 C3F1 E1BE 775A A7AE F6CB 164B 5A6D
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