amd64/144551: ACPI issues on SuperMicro X7SPA-H
dan.naumov at gmail.com
Mon Mar 8 15:30:09 UTC 2010
The following reply was made to PR amd64/144551; it has been noted by GNATS.
From: Dan Naumov <dan.naumov at gmail.com>
To: bug-followup at freebsd.org
Subject: Re: amd64/144551: ACPI issues on SuperMicro X7SPA-H
Date: Mon, 8 Mar 2010 17:21:14 +0200
A slight clarification to this text: "Sometimes powerd will work
correctly for a minute or so, correctly adjusting the CPU frequency
according to load, but in a very short time, the CPU will get stuck at
1666 Mhz permanently (until reboot)."
What I ment was: enabling powerd in either hiadaptive or adaptive mode
will eventually put the CPU to 1666 Mhz. However within a short
timeframe, powerd stops downclocking the CPU when idle and the CPU
stays at 1666 Mhz. If powerd is disabled after this, the CPU continues
to stay at 1666 Mhz.
The CPU isn't actually "stuck" at a specific clock per se (bad wording
on my choice), but powerd kind of seems to be. If follow by starting
powerd in min mode, it will change the frequence to the lowest
possible succesfully. If I stop it and then restart again in
hiadaptive or adaptive mode, the CPU again gets stuck at 1666 Mhz.
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