Date: Fri, 13 Jan 2006 16:52:06 -0800 From: Nate Lawson <nate@root.org> To: Markus Brueffer <markus@FreeBSD.org> Cc: cvs-src@FreeBSD.org, src-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: Re: cvs commit: src/sys/dev/acpi_support acpi_ibm.c Message-ID: <43C84B36.4070000@root.org> In-Reply-To: <20060114003924.9E25816A4D1@hub.freebsd.org> References: <20060114003924.9E25816A4D1@hub.freebsd.org>
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Markus Brueffer wrote: > markus 2006-01-14 00:39:10 UTC > > FreeBSD src repository (ports committer) > > Modified files: > sys/dev/acpi_support acpi_ibm.c > Log: > - Add support for setting the fan control mode to manual or automatic > - Add support for adjusting the fan speed if the fan control mode is manual > > Documentation for the relevant embedded controller register was obtained from > http://www.thinkwiki.org/wiki/Patch_for_controlling_fan_speed > > Tested on: R51 by Fabian Keil > T41p by markus > Requested by: many > Approved by: philip > MFC after: 1 week > > Revision Changes Path > 1.10 +55 -3 src/sys/dev/acpi_support/acpi_ibm.c Thanks for adding support for this but it should be noted that this can be very dangerous. If your userland app tries to control the fanspeed and dies, your system could overheat. Hopefully, the BIOS will override the user settings if the temp gets too high but that is a longshot when mucking with things at this low level. -- Nate
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