freebsd stable - Feb 2016 - problems with powerd and cpufreq on AMD Quad-Core A8-4555M

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
Regards.


On 29 February 2016 at 02:18, John <freebsd-lists at potato.growveg.org>
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 _______________________________________________
> freebsd-stable at freebsd.org mailing list
> https://lists.freebsd.org/mailman/listinfo/freebsd-stable
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>

On Mon, Feb 29, 2016 at 08:29:14AM +1100, Dewayne Geraghty wrote:
>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
Hi Dewayne,

Thanks for looking at this. I modified loader.conf:

$ cat /boot/loader.conf
cpufreq_load="YES"

then recompiled the kernel and rebooted:

10.3-BETA3 #1 r296151

root at onion:~ # kldstat
Id Refs Address            Size     Name
 1   13 0xffffffff80200000 d45380   kernel
 2    1 0xffffffff80f46000 f0c8     cpufreq.ko
 3    1 0xffffffff8113d000 1604     fdescfs.ko
 4    1 0xffffffff8113f000 946      pflog.ko
 5    1 0xffffffff81140000 2d0ef    pf.ko
     
...but still no-go:

root at onion:~ # powerd -v
powerd: no cpufreq(4) support -- aborting: No such file or directory

Also commented out the powerd entries from /etc/rc.conf, rebooted
again, no difference.

many thanks,
-- 
John