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["solved"] Fan running on high nonstop
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mojosam
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PostPosted: Sun Sep 22, 2019 9:54 pm    Post subject: ["solved"] Fan running on high nonstop Reply with quote

My fan had been fine since I installed Gentoo a couple of months ago. Most of the time I barely heard it. Starting a few days ago, it has been running on high nonstop.

I made no overt changes to my system. I do an emerge-webrsync every day. It probably started after one of those.

I found this thread about a similar problem, but it's not exactly the same (His will stay at whatever the starting speed was. Mine is always on high.).

This command:

Code:
cat /sys/class/thermal/thermal_zone0/temp
40500


tells me that my current temperature is 40.5 degrees. I never checked it before, so I don't know what is normal.

Has anyone else had this problem suddenly appear within the last week? How do I troubleshoot and fix it?

(Dell Latitude 2110 netbook, BTW)


Last edited by mojosam on Tue Oct 15, 2019 7:22 pm; edited 1 time in total
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jecepede
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PostPosted: Tue Oct 15, 2019 6:57 pm    Post subject: Annoying BZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ Reply with quote

Aloha !

Long time ago I had a simular issue only under Windows 7 with a Dell laptop.
I forgot the type number but is was one of the first ones with a fingerprint sensor on it.
Anyways, it was my work-laptop so I brought it in for checkup at the service center.

It turned out one of the temperature sensors was broken. If it breaks, the system will
just go on full speed to prevent thermal damage of components.

- - -

What you could do is boot a different, maybe even non-Gentoo, OS from USB or DVD and see if the fans still runs high.
Then the likelyhood of a broken sensor is slightly greater.

- - -

For what it is worth, on a normal desktop that has been running all day under my desk :

Code:
# cat /sys/class/thermal/thermal_zone0/temp
29000


I have no idea if this is low, high or normal for a desktop.
Not even sure one can compare desktop and laptop temperatures.
My wild guess is that laptops do run higher due to the fact they are more compactly build.



Cheeeeeeeeeeeeeeers,

Jecepede
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mojosam
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PostPosted: Tue Oct 15, 2019 7:22 pm    Post subject: Reply with quote

Thank you for replying to this old post. I had assumed that because I had no replies that nobody else had encountered this problem and/or knew how to fix it.

The weird thing is that about a week after it started, the problem went away! The only thing I can think of is that there was a bug in one of the system updates that only affected a few machines. Then that bug got patched in a later update? I suppose the other possibility is that my temperature sensor is starting to become flaky.

You know what they say: "Problems that go away by themselves come back by themselves."

Currently, my fan is running on low, even though the machine's current temperature is 50.6 degrees (10 degrees hotter than what I reported in my original post).

I guess I'll mark this post as "solved". My problem went away, and you provided a good thing for others to check if they have this problem too.
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jecepede
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PostPosted: Tue Oct 15, 2019 7:43 pm    Post subject: Cool at last.... Reply with quote

Aloha !

mojosam wrote:
Thank you for replying to this old post.

You are very welcome.
This is what this comunity is all about. Entousiastic people helping other enthousiastic people.


Oh cool it went away ?!?!
Perhaps it was just as simple as a dustbunny blocking some air-vent ?
Maybe you could use the vacuum cleaner on your Dell or some compressed air if it happens again :lol:
Funny that it now is 50 degrees btw... I would not expect it goting that high. But hey, I am not a technician.


Anyway.... going once.... going twice.... SOLVED 8)



Cheeeeeeeeeeeeeeeers,


Jecepede
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Chrjs
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PostPosted: Mon Nov 04, 2019 11:45 am    Post subject: Reply with quote

I know this thread is old'ish and already solved, but I have to chip in.

The thread you linked was mine, and the way I solved my issue was from installing the nvidia drivers and loading the nvidia kernel module over the nouveau one (blacklisted it).
Now, sometimes when I boot up Gentoo, the fans will blow at full speed when I am in the terminal. But when I do run "startx" and load into KDE, the fans will drop down to normal/silent.

So what fixed it for me was definitely changing the graphics driver module. If I recall correctly, the fans would still blow on max inside KDE when I had the nouveau driver loaded. So the affected fans must have been from my graphics card.
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krinn
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PostPosted: Mon Nov 04, 2019 2:56 pm    Post subject: Reply with quote

mojosam wrote:
Currently, my fan is running on low, even though the machine's current temperature is 50.6 degrees (10 degrees hotter than what I reported in my original post).

it's pretty high for a cpu doing nothing, somer laptop are shitty made with fan bellow the keyboard, you might put it on some pens or something to have a bigger surface below it to let it have more fresh air if it's your case.
Or remove dust within it
(that's a desktop computer)
Code:
cat /sys/class/thermal/thermal_zone0/temp
27800
grep CPU /proc/cpuinfo | head -n1
model name   : Intel(R) Core(TM) i7-4790K CPU @ 4.00GHz
cat /proc/loadavg
0.14 0.11 0.09 1/521 4225
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mojosam
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PostPosted: Fri Nov 08, 2019 10:14 pm    Post subject: Reply with quote

Chrjs wrote:
So what fixed it for me was definitely changing the graphics driver module.


The problem hasn't come back. I don't think it's related to my graphics driver.

krinn wrote:
it's pretty high for a cpu doing nothing, somer laptop are shitty made with fan bellow the keyboard, you might put it on some pens or something to have a bigger surface below it to let it have more fresh air if it's your case.


Its current temperature is 47.5 degrees. That's warmer than before. The fan is on low. Every 10 or 20 minutes, the fan kicks into high for a few seconds and then drops back to low. Right now, the computer is sitting idle.

Its case has stubby back legs, so the bottom is already raised off of the table surface. I suppose I should try to open it up some day and blow out the dust.
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PrSo
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PostPosted: Fri Nov 08, 2019 10:47 pm    Post subject: Reply with quote

Pit stop for thermal compound could be triggered also.

If paste has more than 2 years it could be dry as a stone.
Just my 2c.
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mojosam
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PostPosted: Fri Nov 08, 2019 11:00 pm    Post subject: Reply with quote

PrSo wrote:
Pit stop for thermal compound could be triggered also.

The computer is a mere nine years old. Are you implying it's geriatric already?! Its plastic case alone will last 1000 years!

OK. So when I open it up, I'll replace the thermal compound, too. You know, the bigger this project becomes, the more likely I'll procrastinate!
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