On Wed, Oct 18, 2017 at 12:42:42PM +0100, tech-lists wrote:
On Tue, Oct 17, 2017 at 06:23:06PM -0400, Anthony Jenkins wrote:
cpufreq(4) does not support AMD processor family 0x14 (20), which I
believe your dmesg showed your processor to be.
aha!
I had added support for controlling the frequency on some later AMD
families last year, but the AMD documentation for the 0x14 family is
pretty complicated for my tiny brain. The other families control
processor frequency with a single register, but AFACT you use P-states
on family 0x14. You can have up to 8 P-states, each of which specifies
a power/frequency configuration. If someone could point me to a
reference for controlling the frequency for this family, I could submit
something for review...no idea what Linux does for this family.
Would it help if I were to get hardware output from booting temporarily
to linux mint?
[thought I'd try it anyway]
Linux info here:
https://www.zyxst.net/txt/amd-c70-netbook/linux-dmesg-amdc70.txt
https://www.zyxst.net/txt/amd-c70-netbook/linux-cpufreq-info-amdc70.txt
cpufreq appears to be working on linux. Because of this and that
brightness control works, I've installed linux mint permanently. If you
need me to, I can easily boot into freebsd to run tests; equally can run
tests from linux. I'd prefer to run freebsd, but the inability to turn
down screen brightness was a showstopper.
many thanks,
--
J.
_______________________________________________
[email protected] mailing list
https://lists.freebsd.org/mailman/listinfo/freebsd-hardware
To unsubscribe, send any mail to "[email protected]"
