Date: Tue, 13 Sep 2005 02:31:19 GMT From: Mike <mspam@ideaway.net> To: freebsd-gnats-submit@FreeBSD.org Subject: kern/86049: laptop fan does not turn off if it is "on" at boot time, regardless of CPU temperature Message-ID: <200509130231.j8D2VJ6n087151@www.freebsd.org> Resent-Message-ID: <200509130240.j8D2eALw044632@freefall.freebsd.org>
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>Number: 86049
>Category: kern
>Synopsis: laptop fan does not turn off if it is "on" at boot time, regardless of CPU temperature
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Tue Sep 13 02:40:10 GMT 2005
>Closed-Date:
>Last-Modified:
>Originator: Mike
>Release: 5.4-stable
>Organization:
>Environment:
5.4-STABLE FreeBSD 5.4-STABLE #5: Tue May 10 22:57:11 EDT 2005
>Description:
Running on laptop, if the CPU fan is "on" during boot, it does not shut off until the cpu "on" temperature is reached once. Fan remains on, sysctl shows:
hw.acpi.thermal.tz0._ACx: 80.0C 65.0C -1 -1 -1 -1 -1 -1 -1 -1
only way to get fan to shut off is to run something that will get CPU temperature to above 80.0C, then when it falls below 65.0C, the fan finally shuts off.
>How-To-Repeat:
Keep rebooting a laptop until it boots while CPU fan is spinning. Don't run any processor intensive applications, fan will remain turned "on" indefinitely. Same bahavior on various hardware, just reproduced with Dell l400 laptop before submitting PR.
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
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