Post new topic Reply to topic  [ 7 posts ] 
Author Message
 Post subject: Fan speed "freezes" after some time
PostPosted: Wed Jun 03, 2009 3:40 pm 
Offline

Joined: Wed Jun 03, 2009 3:20 pm
Posts: 2
eeePC model: 1000H
Aurora version: Standard 3.0
Hi,

I just got my new 1000H and installed Eeebuntu Base on it. I'm quite new to all this stuff and it's a bit confusing since there seems to be more than just one way to control a piece of hardware or to display some information on it, let alone the vast amount of packages that can be chosen from.

So I found the sensors-applet as a neat way to show CPU temperature and fan speed in the Gnome Panel. Normally it works well, but after some time -- say two hours -- the fan speed remains fixed at an arbitrary value no matter how the CPU temperature is. Rebooting the machine brings everything back to normal, but this certainly is not a good choice. What's wrong here?


Top
 Profile E-mail  
 
 Post subject: Fan speed "freezes" after some time
PostPosted: Wed Jun 03, 2009 3:45 pm 
Offline
Jupiter Dev
User avatar

Joined: Thu Mar 12, 2009 1:43 am
Posts: 1369
eeePC model: 1000HE
Aurora version: Beta 4.0
wvhansen wrote:
Hi,

I just got my new 1000H and installed Eeebuntu Base on it. I'm quite new to all this stuff and it's a bit confusing since there seems to be more than just one way to control a piece of hardware or to display some information on it, let alone the vast amount of packages that can be chosen from.

So I found the sensors-applet as a neat way to show CPU temperature and fan speed in the Gnome Panel. Normally it works well, but after some time -- say two hours -- the fan speed remains fixed at an arbitrary value no matter how the CPU temperature is. Rebooting the machine brings everything back to normal, but this certainly is not a good choice. What's wrong here?


Make sure that it's not just misreporting by watching /proc/eee/temperature and /proc/eee/fan_speed.

Code:
watch --interval=0.5 'cat /proc/eee/temperature;cat /proc/eee/fan_speed'

_________________
[ ~/Blog ] - [ Fuduntu ] - [ Fuduntu Forum ] - [ Jupiter ] - [ Aurora ]


Top
 Profile E-mail  
 
 Post subject: Fan speed "freezes" after some time
PostPosted: Wed Jun 03, 2009 7:38 pm 
Offline

Joined: Wed Jun 03, 2009 3:20 pm
Posts: 2
eeePC model: 1000H
Aurora version: Standard 3.0
fewt wrote:
Make sure that it's not just misreporting by watching /proc/eee/temperature and /proc/eee/fan_speed.

Code:
watch --interval=0.5 'cat /proc/eee/temperature;cat /proc/eee/fan_speed'

OK, I did this. fan_speed is at 30 for temperatures at about 55°C and at 50 for temperatures at about 65°C. It's interesting that there is much less variation in fan_speed than in the RPMs reported by sensors_applet.

Now, if the fan "freezes" again, fan_speed still reports the correct values, but the fan will no longer change its speed. I could easily confirm this by the noise from the fan; normally it's easy to distinguish between the two speeds. It seems as if sensors_applet is reporting its measurements correctly and the fan itself gets somehow stuck at one setting.


Top
 Profile E-mail  
 
 Post subject: Fan speed "freezes" after some time
PostPosted: Thu Jun 18, 2009 7:18 pm 
Offline

Joined: Wed May 20, 2009 1:14 am
Posts: 14
eeePC model: 900HD
Aurora version: Standard 3.0
My 900ha is now doing this daily after the most recent eeepc-acpi update. It did do it occasionally before, causing the cpu temp one time to rise to over 170F with no change in the fan speed (it was stuck at a low rpm). Only way to stop it is to reboot the system. If I suspend and reawaken it, it will get stuck at a very low rpm causing a dangerous overheating issue.


Top
 Profile E-mail  
 
 Post subject: Fan speed "freezes" after some time
PostPosted: Thu Jun 18, 2009 9:03 pm 
Offline
Jupiter Dev
User avatar

Joined: Thu Mar 12, 2009 1:43 am
Posts: 1369
eeePC model: 1000HE
Aurora version: Beta 4.0
g1powermac wrote:
My 900ha is now doing this daily after the most recent eeepc-acpi update. It did do it occasionally before, causing the cpu temp one time to rise to over 170F with no change in the fan speed (it was stuck at a low rpm). Only way to stop it is to reboot the system. If I suspend and reawaken it, it will get stuck at a very low rpm causing a dangerous overheating issue.


This is something related in the asus-eee kernel module itself, I've been looking into it, but I haven't found a fix yet.

_________________
[ ~/Blog ] - [ Fuduntu ] - [ Fuduntu Forum ] - [ Jupiter ] - [ Aurora ]


Top
 Profile E-mail  
 
 Post subject: Fan speed "freezes" after some time
PostPosted: Tue Jun 30, 2009 5:49 am 
Offline

Joined: Wed Oct 08, 2008 6:39 am
Posts: 5
Location: Buenos Aires - Argentina
eeePC model: 900
Aurora version: Standard 3.0
I have a 900 with the same problem...


Top
 Profile E-mail  
 
 Post subject: Fan speed "freezes" after some time
PostPosted: Tue Jun 30, 2009 12:27 pm 
Offline
Jupiter Dev
User avatar

Joined: Thu Mar 12, 2009 1:43 am
Posts: 1369
eeePC model: 1000HE
Aurora version: Beta 4.0
Pablis wrote:
I have a 900 with the same problem...


I think this may be 2.6.29 related, I no longer have the issue on 2.6.30.

_________________
[ ~/Blog ] - [ Fuduntu ] - [ Fuduntu Forum ] - [ Jupiter ] - [ Aurora ]


Top
 Profile E-mail  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 7 posts ] 


Who is online

Users browsing this forum: No registered users and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
cron