Fan always running since karmic install

[Soapy.Illusion]

On my Acer 6920 laptop after installing karmic today my fan seems to run at very high speeds at all times

I have heard it go from full speed to what sounds like 3/4 speed but it does not seem to go any lower

I installed GKrellM and it could not find any fan speed sensors but it was able to tell me my CPU was at a very reasonable temp

I tried changing the CPU frequency with the applet but it did not change the fan

Although on 9.04 I never had this problem neither on Windows Vista or 7

Is there anything I should try to do and is there any other information needed?

Edit: After a couple reinstalls that has changed nothing
Edit: lm-sensors cannot detect my fan speed and therefore cannot control it with that

[Eugene Crosser (crosser)]

Same here, it87 sensor chip on the MB, fan speed not accessible.
Looks like a kernel problem:

[ 1286.459427] it87: Found IT8716F chip at 0x228, revision 1
[ 1286.459443] it87: in3 is VCC (+5V)
[ 1286.459446] it87: in7 is VCCH (+5V Stand-By)
[ 1286.459520] ACPI: I/O resource it87 [0x22d-0x22e] conflicts with ACPI region IP__ [0x22d-0x22e]
[ 1286.459528] ACPI: If an ACPI driver is available for this device, you should use it instead of the native driver

and of course fancontrol cannot find pwm sensors and the fan is running at full speed.

[Soapy.Illusion (alex-louis-angelini)]

I can confirm this must be a kernel error because I just tried openSUSE 11.2 and I had the same problem.

This has made my laptop quite unusable, considering the sound is way too loud to have in class and that it seems to kill my battery.

[Eugene Crosser (crosser)]

See https://bugzilla.redhat.com/show_bug.cgi?id=501596
One needs this kernel boot parameter: "acpi_enforce_resources=lax"
This fixed the problem for me.

[Soapy.Illusion (alex-louis-angelini)]

I tried adding that line

I added it to the end of the /etc/default/grub file

then ran sudo update-grub

and nothing, the fan still runs all the time, any advice?

[Vipul (vipul-bhandari)]

same with me.....i thought maybe it is the kernel drivers, so iremoved the kernel drivers but fan keeps making a lot of noise and this makes karmic unusable.

[slumbergod (slumbergod)]

I am using an Acer Aspire 5720 and the laptop fan is going far too much since Karmic (actually, I think it was overactive under Jaunty too but not as bad as now). This machine was so quiet when it had Vista on it which is why it is so noticeable with Karmic. Even at night when nothing is being processed, no applications are running, and the display is off, it is whirring away as though it is processing demanding data.

[slumbergod (slumbergod)]

Actually, I should also add that not only is the fan hyperactive with Karmic, but it manages to overheat the CPU to the point it shuts down anytime it does anything intensive (converting a music file to ogg or even watching certain mkv files with HD video).

Normally, the temp is 65 degrees which also seems a bit high.

[masterridley (masterridley)]

I can confirm that after vista->karmic migration fan runs a lot more although cpu load is actually quite lower.
(Also and this is subjective I think that the pc runs hotter too because fan runs continuously but at a somewhat low speed)

[Teras (than86r)]

Same problem here too.

* DELL Studio 1557 - (Core i7 @1.60)
* 2.6.31-19-generic #56-Ubuntu SMP x86_64 GNU/Linux

The laptop came with Windows 7 installed , and it was totally silent. After I installed ubuntu, things became ...noisy AND hot :)

A fan is heard working all the time (very loudly) and the area around mousepad tends to become very hot after some time (2 hours+)

I tried changing the CPU frequency and used some certain governors, such as "ondemand", offered by the cpufreqd tool....but nothing changed concerning the fan speed and noise.

Notes:
======

- I 've got the A02 BIOS version (10/06/2009) ...but I think it doesnt matter, people with A03 also faced same problem.
- also:

$ cat /proc/acpi/fan/FAN0/state
status: on

$ cat /proc/acpi/fan/FAN1/state
status: off

$ cat /proc/acpi/thermal_zone/TZ00/temperature
temperature: 27 C

$ cat /proc/acpi/thermal_zone/TZ01/temperature
temperature: 55 C

I attach my lsmod.

ps: I was also told that this could be an issue of DELL, since Windows 7 power management is set to "Balanced", so in case of greater workloads, the fans could then busy noisy too.

*The thing here though, is that the fan becomes being noisy since Grub starts loading......

Thank you.

[Anuragji (info-anuragdesign)]

I can confirm this - since the Karmic update the fans on my Lenovo N100 is doing the same. I have a double boot with Windows XP and the issue does not appear there. Battery life when running Karmic is drastically lower, which may be related to that.

[Anuragji (info-anuragdesign)]

Can confirm the same for my Lenovo N100. Since Karmic update fan is running constantly. I have a XP dual boot and in XP the issue does not appear. Battery life seems to be drastically reduced in Karmic, which my be a direct result of this issue.

[Iwan Mota (iwan-ecf)]

Confirm on my Acer Aspire 5553G; Fan always on no matter what the temperature is. It's a brand new computer.

Also I've read on other posts/bugs that the ATI fglrx driver helped (I have an ATI HD5470) but it made no difference with me.

Running Lucid 2.6.32-25 64bit.

The fan is on from the moment the computer is started in the morning, even when CPU temp is below 45C....

As a consequence my battery life is much lower than with Windows...

[Iwan Mota (iwan-ecf)]

One interesting note to add to my comment above: I don't have the /proc/acpi/fan/FAN? in my system... Maybe that is a hint.

I'll investigate and report back

[X181 (olag-2)]

Linux nb181 2.6.38-8-generic #42-Ubuntu SMP Mon Apr 11 03:31:50 UTC 2011 i686 i686 i386 GNU/Linux

HP Pavilion NB

[Gotit (sca957)]

Not sure if it will help you Acer users, but I had similar fan problems with my Acer Aspire 1410. I found installing piie's patch as described here: http://ubuntuforums.org/showthread.php?t=1341325 to make my fan behave.

[Brad Figg (brad-figg)]

This bug was filed against a series that is no longer supported and so is being marked as Won't Fix. If this issue still exists in a supported series, please file a new bug.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.