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Old 11th April 2012
albator albator is offline
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Default apmd : Operation not supported

Hi,

I have an AMD Athlon(tm) II X3 455 Processor and I when I try to have cpu scaling here is what I get :
Code:
# apmd -A
cannot open device file `/dev/apmctl` : Operation not supported by device.
Does it mean that this feature isn't support for this processor, or is it linked to the BIOS of the motherboard, a 880GA-UD3H GIGABYTE ?

I couldn't find any relevant error in dmesg.

Thanks
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Old 11th April 2012
ocicat ocicat is offline
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Quote:
Originally Posted by albator View Post
Code:
# apmd -A
cannot open device file `/dev/apmctl` : Operation not supported by device.
As posted some time back on tech@, newer motherboards (especially multi-processor...) will be configured as ACPI depending upon SMBIOS versions:

http://marc.info/?l=openbsd-tech&m=124545473209570&w=2

If you want us to look at it, post the entire output of dmesg(8). Otherwise, we have insufficient information to comment further.
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Old 12th April 2012
albator albator is offline
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In fact, OpenBSD is not installed on this computer anymore. I couldn't get cpu scaling to work on it with 4.9. (Didn't try very hard though).

I wanted to see if it worked with 5.0 when I booted from the install disk (install50.iso).
The thing is I first downloaded the i386 version because I aimed to install OpenBSD on a usb stick to then install to my i386 netbook.
From this cd I had the error I posted.

Then I tried again with the amd64 version to find that apmd is not in /sbin.

I wanted to post the dmesg output, but I have first to find how to mount an ext2fs (or whatever works) drive from the installation disk shell.
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Old 12th April 2012
albator albator is offline
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It seems the answer is here (this article was about 4.8) :
http://undeadly.org/cgi?action=artic...20101224204626
* Speed scaling is unavailable for this processor family (AMD K10)

From FreeBSD :
Code:
%dmesg|grep -i amd
    root@farrell.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC amd64
CPU: AMD Athlon(tm) II X3 455 Processor (3314.72-MHz K8-class CPU)
  Origin = "AuthenticAMD"  Id = 0x100f53  Family = 10  Model = 5  Stepping = 3
  AMD Features=0xee500800<SYSCALL,NX,MMX+,FFXSR,Page1GB,RDTSCP,LM,3DNow!+,3DNow
I found this too :
http://www.mail-archive.com/tech@ope.../msg07371.html
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