Date: Fri, 26 Oct 2012 23:22:30 +1100 From: Brett <brett.mahar@gmx.com> To: freebsd-x11@freebsd.org Subject: Re: mac mini extremely hot when using i915kms Message-ID: <20121026232230.0ddd60c0861f619946a7194d@gmx.com> In-Reply-To: <mailman.19.1351252801.93817.freebsd-x11@freebsd.org> References: <mailman.19.1351252801.93817.freebsd-x11@freebsd.org>
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> >>>> Hi, > >>>> I am run 9.1-RC2 under mac mini(A1347), powerd aslo run, > >>>> Without i915kms running, cpu temperature is very low: > >>>> % sysctl -a|grep temperature > >>> > >>> can you also show the CPU speed? If powerd does not manage to get > >>> the CPU clock down the temperature will rise. > >>> > >> This is 2.0G CPU, CPU speed is 100Mhz when CPU is idle and powerd is > >> running. Just a thought, but have you tried running at higher than 100Mhz when idle? I have a laptop that runs pretty hot and from experimenting with powerd the last few weeks, it runs hotter at 400Mhz than 800Mhz. I not sure why, maybe the fan runs a bit faster at 800Mhz. So I set debug.cpufreq.lowest=800 in sysctl.conf, and -m and -M of 800 in powerd_flags, and the laptop is happy. Maybe your Mac mini has a similar quirk.
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