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Message-Id: <200512111538.jBBFciOo001202@www.freebsd.org>
Date: Sun, 11 Dec 2005 15:38:44 GMT
From: Trond Gundersen <trondsg@gmail.com>
To: freebsd-gnats-submit@FreeBSD.org
Subject: Laptop fan doesn't turn off (ACPI enabled)
X-Send-Pr-Version: www-2.3

>Number:         90243
>Category:       kern
>Synopsis:       Laptop fan doesn't turn off (ACPI enabled) (Packard Bell EasyNote E3245)
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    freebsd-acpi
>State:          closed
>Quarter:        
>Keywords:       
>Date-Required:  
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sun Dec 11 15:40:02 GMT 2005
>Closed-Date:    Sun Dec 05 14:57:55 UTC 2010
>Last-Modified:  Sun Dec 05 14:57:55 UTC 2010
>Originator:     Trond Gundersen
>Release:        6.0-RELEASE
>Organization:
>Environment:
FreeBSD bsd.company.com 6.0-RELEASE FreeBSD 6.0-RELEASE #0: Thu Nov  3 09:36:13 UTC 2005     root@x64.samsco.home:/usr/obj/usr/src/sys/GENERIC  i386
  
>Description:
The laptop fan almost never turns off. It only turns off in extremely rare
cases (countable on one hand). The computer does NOT seem to be overly hot.
ACPI is enabled. This is also the loadest fan I've ever heard (also on
Windows, but then it's not running all the time), it really sounds like a
tractor, so it's essential that it's turn off when the computer is cool enough.

Here is the output of sysctl hw.acpi:
hw.acpi.supported_sleep_state: S3 S4 S5
hw.acpi.power_button_state: S5
hw.acpi.sleep_button_state: S3
hw.acpi.lid_switch_state: NONE
hw.acpi.standby_state: S1
hw.acpi.suspend_state: S3
hw.acpi.sleep_delay: 1
hw.acpi.s4bios: 0
hw.acpi.verbose: 0
hw.acpi.reset_video: 1
hw.acpi.cpu.cx_supported: C1/0 C2/90
hw.acpi.cpu.cx_lowest: C2
hw.acpi.cpu.cx_usage: 4.05% 95.94%
hw.acpi.acline: 1
hw.acpi.battery.life: 100
hw.acpi.battery.time: -1
hw.acpi.battery.state: 0
hw.acpi.battery.units: 1
hw.acpi.battery.info_expire: 5

I note that there is no acpi.fan, but I don't know if there should be one.
If I change hw.acpi.cpu.cx_lowest to C1 the fan still does not turn off and
now the computer becomes overly hot.

The laptop is a Packard Bell EasyNote E3245.


>How-To-Repeat:
Turn on a Packard Bell EasyNote E3245 laptop with FreeBSD installed.
(console or with X-Windows, nothing matters.)
>Fix:
Turn off computer.
>Release-Note:
>Audit-Trail:
State-Changed-From-To: open->feedback 
State-Changed-By: gavin 
State-Changed-When: Fri Feb 22 15:14:22 UTC 2008 
State-Changed-Why:  
To submitter: firstly, sorry that it has taken so long for this PR to 
be looked at.  Does this problem still occur with more recent versions 
of FreeBSD? 


Responsible-Changed-From-To: freebsd-i386->gavin 
Responsible-Changed-By: gavin 
Responsible-Changed-When: Fri Feb 22 15:14:22 UTC 2008 
Responsible-Changed-Why:  
Track 

http://www.freebsd.org/cgi/query-pr.cgi?pr=90243 

From: "Trond Gundersen" <trondsg@gmail.com>
To: bug-followup@FreeBSD.org
Cc:  
Subject: Re: i386/90243: Laptop fan doesn't turn off (ACPI enabled) (Packard Bell EasyNote E3245)
Date: Sat, 23 Feb 2008 17:00:31 +0100

 I don't know if it still happens,
 but on OpenBSD and Linux I can fix it by enabling CPU frequency
 scaling. I'm not sure how "
 hw.acpi.cpu.cx_lowest:C2" relates to that. I couldn't find any good
 info about it at the time. It's a bit strange though, because on
 OpenBSD and Linux, the computer becomes
 hot unless I enabled CPU frequency scaling. When I cool it down by
 enabling that, the fan stops. On FreeBSD I was sort of able to cool it
 down by changing
 hw.acpi.cpu.cx_lowest, but the fan didn't stop. I don't know if it's
 still like that in the latest version.
 
 
 -- 
 Never hit a man with glasses. Hit him with a baseball bat.
 
State-Changed-From-To: feedback->suspended 
State-Changed-By: gavin 
State-Changed-When: Mon Feb 25 11:25:21 UTC 2008 
State-Changed-Why:  
Mark suspended as submitter is unable to test again to confirm if 
this is still an issue 


Responsible-Changed-From-To: gavin->freebsd-acpi 
Responsible-Changed-By: gavin 
Responsible-Changed-When: Mon Feb 25 11:25:21 UTC 2008 
Responsible-Changed-Why:  
Over to -acpi mailing list. 

http://www.freebsd.org/cgi/query-pr.cgi?pr=90243 
State-Changed-From-To: suspended->closed 
State-Changed-By: avg 
State-Changed-When: Sun Dec 5 14:57:33 UTC 2010 
State-Changed-Why:  
Submitter doesn't seem to be using FreeBSD anymore. 

http://www.freebsd.org/cgi/query-pr.cgi?pr=90243 
>Unformatted:
