problems with powerd and cpufreq on AMD Quad-Core A8-4555M

Dewayne Geraghty dewaynegeraghty at
Sun Feb 28 21:29:47 UTC 2016

Thanks John, I have cpufreq added via the boot/loader.conf which always
works. However, over the weekend, I was testing some boot changes and tried
to add cpufreq AFTER the kernel - unsuccessfully.  This was amd64 10.3Beta1
and 10.3Beta3.

A workaround (for you) might be to remove it from the kernel and load
cpufreq via loader.conf?

I have some other problems (with usb nic's axge,axe) but I'll pursue if I
get time for enough info for a PR

On 29 February 2016 at 02:18, John <freebsd-lists at> wrote:

> Hello list,
> I'm using 10.3-BETA3 #0 r296148 compiled today on on AMD Quad-Core
> A8-4555M. I have the following in /etc/rc.d:
> powerd_enable="YES"
> I have cpufreq in the kernel config, unmodified GENERIC apart from adding a
> line for amdtemp.
> # CPU frequency control
> device          cpufreq
> Why is it that on boot I get the following warning:
> powerd: no cpufreq(4) support -- aborting: No such file or directory
> Does powerd not work with AMD ? Some debugging info:
> root at onion:~ # sysctl -a | egrep -i 'hw.machine|hw.model|hw.ncpu'
> hw.machine: amd64
> hw.model: AMD A8-4555M APU with Radeon(tm) HD Graphics   hw.ncpu: 4
> hw.machine_arch: amd64
> root at onion:~ # sysctl debug.hwpstate_verbose="1"
> debug.hwpstate_verbose: 0 -> 1
> root at onion:~ # powerd -v
> powerd: no cpufreq(4) support -- aborting: No such file or directory
> thanks,
> --
> John _______________________________________________
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