Acerhdf on kernel 2.6.30.2

I am running Ubuntu NBR 9.04 with kernel 2.6.30.2

I have installed acerhdf as usual but it doesn't seem to be working.

Code:

carl@carl-laptop:~$ dmesg|grep acerhdf
[   10.590163] acerhdf: Acer Aspire One Fan driver, v.0.5.16
[   10.590179] acerhdf: Fan control off, to enable do:
[   10.590185] acerhdf: echo -n "enabled" > /sys/class/thermal/thermal_zone0/mode
carl@carl-laptop:~$ 

Code:

carl@carl-laptop:~$ sudo echo -n "enabled" > /sys/class/thermal/thermal_zone0/mode
bash: /sys/class/thermal/thermal_zone0/mode: Permission denied

Any ideas on how to fix this? It was working ok with the default kernel but i needed the later version for better Intel graphics drivers.

 

It seems a common problem with ubuntu, I tried it some time ago with kernel 2.6.30 and had the same issue. The only way set acerhdf into kernel mode was to run the program being root first, "sudo" was not working, so "sudo su" and run the prorgram. But be careful since I noticed that sometimes acerhdf fails to read either fan/temp states and doesn't turn fan on again, which can be very dangerous for your CPU... mine was over 70 ºC when I noticed the problem.

Greetings

 

That doesn't work:

Code:

carl@carl-laptop:~$ sudo su modprobe acerhdf
Unknown id: modprobe
carl@carl-laptop:~$ 

 

Try sudo su and press enter - then do the modprobe. The way you did it, you tried to switch to user modprobe, which doesn't exist. su = switch user.

 

I still get the same about fan control being turned off:

Code:

carl@carl-laptop:~$ sudo su
[sudo] password for carl: 
root@carl-laptop:/home/carl# modprobe acerhdf
root@carl-laptop:/home/carl# dmesg|grep acerhdf
[   10.456684] acerhdf: Acer Aspire One Fan driver, v.0.5.16
[   10.456697] acerhdf: Fan control off, to enable do:
[   10.456702] acerhdf: echo -n "enabled" > /sys/class/thermal/thermal_zone0/mode
root@carl-laptop:/home/carl# 

 

Then do what the errormessage says. Remember to prepend sudo to the echo command, unless you have switched to root allready.

 

ok switching to root (superuser) and typing

Code:

echo -n "enabled" > /sys/class/thermal/thermal_zone0/mode

cured the problem, but how do i get this working automatically?

 

beware with temp/fan states, as I wrote in my previous post, acerhdf can be buggy sometimes and does not read those values properly so if the fan isn't turned on when needed you can overheat your processor. I'd suggest you to run "dmesg | grep -i acerhdf" to check that there are no "unable to read fan state" errors....

 

how do i set what temperature the fan comes on at?

 

If I'm not wrong, default values for acerhdf are fanon=67 and fanoff=62. You can change those values by two ways:

1) by creating/modifying the config file in /etc/modprobe.conf and setting the values that you want, i.e.

Code:

options acerhdf interval=5 fanon=60 fanoff=55

2) by passing the settings when loading the module, i.e.

Code:

modprobe acerhdf interval=5 fanon=60 fanoff=55

P.S.: All temps in Celsius

 

My fan seemed to come on at 60c.

Manually starting the module and passing the temps works.


/etc/modprobe.conf is obsolete and for 2.4. kernels.

I still need a way to get acerhdf to work automatically. If i add it to /etc/modules the service loads but fan control is turned off and i manually have to start it.

 

create the file "/etc/modprobe.d/acerhdf.conf" with following content:

Code:

options acerhdf kernelmode=1 fanon=65 fanoff=60

the option kernelmode=1 will automatically enable fan control of acerhdf after modprobing acerhdf

 

This error has been fixed in recent versions of acerhdf.