Hi,

I have the same issue under Linux with the Inspiron 7559.  Have you ever found a solution?  I've seen a few reports about spotty fan control issues with this laptop...

A few observations I have:

1. Fans appear to work correctly under Windoze 10.

2. Under Linux fans run at low speed even when the CPU is cool.

3. Fans under Linux will eventually shut off if I pop the bottom off the laptop and blow cool air onto the mother board.  Looking at lm-sensors, it seems like they shut off when the SODIMM temp gets below 39c. CPU/GPU temp seems to be irrelevant.

Hello,

the only "working" workaround (I wouldn't call it solution as no one from Dell responded for this problem anywhere) I've found for this is:

install i8kutils

then in terminal:

sudo gedit /etc/i8kmon.conf

paste this:

# Run as daemon, override with --daemon option

set config(daemon)      0

# Automatic fan control, override with --auto option

set config(auto)        1

# Report status on stdout, override with --verbose option

set config(verbose) 1

# Status check timeout (seconds), override with --timeout option

set config(timeout) 20

# For computer with 2 fans, use a variant of this instead:

# Temperature thresholds: {fan_speeds low_ac high_ac low_batt high_batt}

set config(0) { {0 0}  -1  55  -1  55}

set config(1) { {1 1}  36  60  36  60}

set config(2) { {1 1}  52  70  52  70}

set config(3) { {2 2}  65  78  65  78}

set config(4) { {2 2}  75 128  75 128}

# end of file

and then run:

sudo /etc/init.d/i8kmon restart

You can play with temps :)

Anyway it would be good if ANYONE from Dell replies for this as they should support Linux. Still, I do not know if this is the problem of kernel/any driver/BIOS or how the heck the fans are/should be managed on Linux.

see my post

Thanks. I've actually tried i8kutils before, but I don't trust it.  I think something might be actually heating up on this laptop under Linux.   (I'm the guy on ubuntuforums.org where this solution was posted)  

Unfortunately, I doubt anyone from Dell is going to help us.  Dell support seems clueless about pretty much everything.  Our best bet would be to file bugs with Ubuntu and/or the Linux kernel.

https://bugs.launchpad.net/

https://bugzilla.kernel.org/

Then if all users who experience fan issues on this laptop can chime in on the bug reports, it actually might get fixed.  Still a long shot, but I don't know what else to try at this point.

Thanks.  I've actually played around with i8kutils, but I don't trust it on this laptop.  I still kind of think something is heating up under Linux.   I'm actually the guy in the thread over on Ubuntu Forums where this solution was suggested.

I doubt anyone from Dell will help us.  Dell support seems clueless about pretty much everything.  I think our best bet would be to file bug reports with Ubuntu and/or the Linux kernel.

Hello, I did that couple weeks ago already

answers.launchpad.net/.../293866

Seems like no one is interested about this topic and people just giving their hands away from this problem.

I'm starting to regret buying Dell laptop.  :(

I know what you mean.  I hate the 7559.  Worst Linux experience ever... but I'm stuck with it now.

Anyway, I think answers.launchpad.net is different than bugs.launchpad.net.  I think the later is actually where you file bugs.  I will see if I can file a bug report later when I get some free time, and then maybe we can get others with the fan issue to chime in on it.  They seem to take it seriously when multiple users have the same bug.    

I've filed a bug report on ubuntu launch pad about this.

bugs.launchpad.net/.../1602888

Posting it here in case anyone else reading this might want to click on "this bug affects me" or chime in on it, since Dell will give us no help on this.  

Hi everybody. I can confirm that problem is affecting my 7720SE. The only thing it worked for me is to disable BIOS fan management. Its preety hard to do because Dell has no advanced BIOS options while booting. After that i8kultis is not fighting with BIOS settings. There is no more full-low speed fan dance all the time.

I'd like to bring this back the front and see if anybody else has suggestions.  Nothing has worked and the fans will run forever under any version of Linux.  We need a Dell engineer to look at this or some support person.

it's almost release time for a new release and this laptop version is still not working as it should on Linux.

For me it was very bad experience with Dell. I'll never ever buy Dell laptop or any piece of hardware, because Linux support is ignored by Dell engineers. With Windows, OK but with Linux, this model? Never! I'll give this model to my wife after mobile Zen are released and buy the new one, but as I says: IT WILL NOT BE Dell AT ALL!

I was wrong they have released this before my earlier comment:

www.dell.com/.../pd

it looks like it has a better hinge and airflow ( but ugly design )

and yet the fan issue is not fixed in the latest BIOS update for 7559.

Fan is still an issue in the latest BIOS and latest Linux kernel version 4.8.10.

Does anybody from Dell even read these?  This has been a problem for as long as this laptop has been in production and there hasn't been one response from Dell about this.  This is particularly disturbing by the fact that has Ubuntu Certified status.

See here: bugzilla.kernel.org/show_bug.cgi

and here: bugs.launchpad.net/.../1602888

Ubuntu certified: certification.ubuntu.com/.../