Bug 9517 - To low fan speed on HP Compaq nx6325
Summary: To low fan speed on HP Compaq nx6325
Status: REJECTED UNREPRODUCIBLE
Alias: None
Product: ACPI
Classification: Unclassified
Component: Power-Fan (show other bugs)
Hardware: All Linux
: P1 normal
Assignee: Len Brown
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2007-12-07 05:18 UTC by Roberth Sjonøy
Modified: 2007-12-27 23:49 UTC (History)
1 user (show)

See Also:
Kernel Version: 2.6.23.9
Subsystem:
Regression: ---
Bisected commit-id:


Attachments
Dmesg output. (21.82 KB, application/octet-stream)
2007-12-12 05:00 UTC, Roberth Sjonøy
Details

Description Roberth Sjonøy 2007-12-07 05:18:20 UTC
+++ This bug was initially created as a clone of Bug #9516 +++

Most recent kernel where this bug did not occur: 2.6.23.9
Distribution: Arch Linux
Hardware Environment: HP Compaq nx6325
Software Environment: 

The kernel has some patches listed here:

http://cvs.archlinux.org/cgi-bin/viewcvs.cgi/base/kernel26/

Problem Description:

The fan's on this laptop runs to slow on this laptop with GNU/Linux, the laptop gets very easily overheated. The fan's run much faster on Microsoft Windows. 

Steps to reproduce:

Install linux distribution which is a mostly vanilla kernel, And do havey tasks like copying files etc.
Comment 1 Zhang Rui 2007-12-09 18:21:12 UTC
Please attach the dmesg and acpidump output.
Please attach the result of "cat /proc/acpi/thermal_zone/*/*".
Comment 2 Roberth Sjonøy 2007-12-10 12:26:24 UTC
Dmesg output: http://rafb.net/p/ItLYfx77.txt
Acpid output: http://rafb.net/p/wqIEjO67.txt
Output of "cat /proc/acpi/thermal_zone/*/*": http://rafb.net/p/ZxvsBK66.txt
Comment 3 Fu Michael 2007-12-12 00:29:16 UTC
Roberth, would you please double-check the URL in comment# 2? we can't open these files. 

IN fact, would you please attach these to this bug as attachements? thanks.
Comment 4 Roberth Sjonøy 2007-12-12 05:00:27 UTC
Created attachment 13997 [details]
Dmesg output.
Comment 5 Roberth Sjonøy 2007-12-12 14:51:27 UTC
Sorry I don't know how to get an acpi, please help me.
Comment 6 Zhang Rui 2007-12-19 18:49:53 UTC
you can download the latest pmtools source code at http://www.kernel.org/pub/linux/kernel/people/lenb/acpi/utils/
make and run acpidump on your laptop and attach the result here.
Comment 7 Len Brown 2007-12-27 23:48:13 UTC
I have access to an HP nx6325 and do not see this problem
running Linux-2.6.23.12.

Though I do not run Windows on the box, I use this system
primarily to test ACPI based fan control on Linux.
I have verified that the fan speed kicks in at the
temperatures prescribed by the BIOS -- and also
that the fan slows down at the thresholds prescribed
by the BIOS.

I generally do this by running

watch cat /proc/acpi/thermal_zone/TZ1/*
<setting not supported>
<polling disabled>
state:                   active[3]
temperature:             48 C
critical (S5):           105 C
passive:                 95 C: tc1=1 tc2=2 tsp=100 devices=C000 C001
active[0]:               75 C: devices=C34F
active[1]:               65 C: devices=C350
active[2]:               55 C: devices=C351
active[3]:               40 C: devices=C352

and then add some load, say via
$ cat /dev/zero > /dev/null &
$ cat /dev/zero > /dev/null &

and blocking the vents with tape, unblocking them, killing the load etc
and watching the temperature change, the active state change,
and listening to the fan on changes between states.
Comment 8 Len Brown 2007-12-27 23:49:58 UTC
If you can reproduce this issue using a kernel.org kernel,
please re-open this report, attach the kernel .config,
and describe how I can reproduce and observe the failure.

Note You need to log in before you can comment on or make changes to this bug.