[Bug 193925] New: CPU-frequeny scaling does not work on FSC Futro S400 tin-client

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=193925

            Bug ID: 193925
           Summary: CPU-frequeny scaling does not work on FSC Futro S400
                    tin-client
           Product: Base System
           Version: 10.0-STABLE
          Hardware: i386
                OS: Any
            Status: Needs Triage
          Severity: Affects Some People
          Priority: ---
         Component: kern
          Assignee: freebsd-bugs at FreeBSD.org
          Reporter: bugs.andreas.glaeser at freenet.de

Created attachment 147671
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=147671&action=edit
gzipped disassembled DSDT-table from FSC Futro S400 thin-client

This is most probably an ACPI-issue with powerd.
I am unsure , whether powerd actually belongs to the kernel in FreeBSD, it
might belong to the misc-section.
Because I am currently dealing with CPU-frequency-scaling and ACPI on LInux, I
can post a disassembled DSDT ACPI-table here. Hope this helps fixing the issue.
For detailed hardware-information about FSC Futro S400 please see here:
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=694344
and here:
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=732060
The latter link points to some information concerning the FreeBSD-kernel of
Debian GNU/kFreeBSD and also has some debugging-information including powerd.

Some of these thin-clients don't have a DVI-port and upgrading RAM to more than
512 MB is a bit costly.
So they would be nice headless nano-servers, if FreeBSD worked on them
properly.
Turning off ACPI is a suboptimal solution.

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