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#26 2016-05-05 01:27:21

Klatu1974
Member
Registered: 2016-04-28
Posts: 7

Re: Help with fancontrol on dell laptop

Disco Dave wrote:
workdowg wrote:

... But unless it is coming from a cold start (boot or suspend) the fans still don't turn off once on ...

So, that implies that your suspend works properly? I still haven't been able to get my suspend to work properly on this laptop. It appears to either freeze as it suspends or after it suspends. Are you using bbswitch and bumblebee? Or the official nvidia drivers?

Also has anyone found a decent set of temps in the i8kutils.conf that works well for them? I've still been playing with mine and haven't found set of numbers that I'm happy with.

I'd also be interested to know if workdowg got suspend working.  I've never been able to get suspend to work reliably on this laptop.  I've tried every kernel from 4.3 up to the  very latest 4.6rc6.  Also tried various gfx drivers, bumblebee, bbswitch, etc.  The best I ever got was suspend "sometimes" working, and that was under Ubuntu 15.10.

As for i8kutils,  maybe I was missing something, but I could never make the temp settings stick for very long.  They'd work for a while, but eventually the BIOS fan control re-asserts its self and the fans revert to just running pretty much constantly at the lowest speed as described by workdowg.

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#27 2016-05-05 01:30:24

workdowg
Member
Registered: 2010-12-31
Posts: 69

Re: Help with fancontrol on dell laptop

Disco Dave wrote:
workdowg wrote:

... But unless it is coming from a cold start (boot or suspend) the fans still don't turn off once on ...

So, that implies that your suspend works properly? I still haven't been able to get my suspend to work properly on this laptop. It appears to either freeze as it suspends or after it suspends. Are you using bbswitch and bumblebee? Or the official nvidia drivers?

Also has anyone found a decent set of temps in the i8kutils.conf that works well for them? I've still been playing with mine and haven't found set of numbers that I'm happy with.

No bbswitch, just bumblebee and nvidia. I also had video issues and suspend so I am ignoring the latest Linux,linux-headers,nvidia and nvidia-utils. See here https://bbs.archlinux.org/viewtopic.php?id=211875

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#28 2016-05-05 01:32:43

Disco Dave
Member
Registered: 2014-12-31
Posts: 91

Re: Help with fancontrol on dell laptop

Do you get decent performance in games? When I tried using bumblee with nvidia, i got worse FPS in free games like armagetron advanced, then I did with bumblee. Are you able to download armagetron advanced and tell me what fps you get without vsync? Its a free game in the repos labelled as Armageddon

Please and thank you smile

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#29 2016-05-05 01:37:02

workdowg
Member
Registered: 2010-12-31
Posts: 69

Re: Help with fancontrol on dell laptop

Disco Dave wrote:

Do you get decent performance in games? When I tried using bumblee with nvidia, i got worse FPS in free games like armagetron advanced, then I did with bumblee. Are you able to download armagetron advanced and tell me what fps you get without vsync? Its a free game in the repos labelled as Armageddon

Please and thank you smile

It won't be until tomorrow,im at work now...

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#30 2016-05-05 01:44:11

Disco Dave
Member
Registered: 2014-12-31
Posts: 91

Re: Help with fancontrol on dell laptop

workdowg wrote:
Disco Dave wrote:

Do you get decent performance in games? When I tried using bumblee with nvidia, i got worse FPS in free games like armagetron advanced, then I did with bumblee. Are you able to download armagetron advanced and tell me what fps you get without vsync? Its a free game in the repos labelled as Armageddon

Please and thank you smile

It won't be until tomorrow,im at work now...

That's fine I'm just really curious because I was never able to get bumblebee working at comparable rates to the nvidia driver without bumblebee. Thanks a lot.

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#31 2016-05-05 02:01:59

Klatu1974
Member
Registered: 2016-04-28
Posts: 7

Re: Help with fancontrol on dell laptop

Without i8kutils, how do the fans on this laptop behave for you guys?    For me, coming from a cold boot the fans are off.  However once I begin using the laptop and it warms up to around 45c - 50c, the fans start spinning at the slowest speed and stay on pretty much indefinitely.   If the ambient temperature is cool, they will eventually shut off, but it can take a very long time, even when lm-sensors is showing the CPU at ~32c.

Do either of you guys see similar behavior?

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#32 2016-05-05 02:26:32

workdowg
Member
Registered: 2010-12-31
Posts: 69

Re: Help with fancontrol on dell laptop

I noticed they never stopped at all before using i8kutil. I still don't know where it is getting its info for temp. It makes no sense from a lm_sensors stand point.... Now that I'm aware, I can try to piece it together. The bios on this laptop(i7559) doesn't show any fan info or temps. Maybe there is a way to get into the "secret" advanced menu...

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#33 2016-05-05 17:59:13

workdowg
Member
Registered: 2010-12-31
Posts: 69

Re: Help with fancontrol on dell laptop

Seems bumblebee is borked at the moment (i'll try later again and maybe email you instead...)...

But here is relevant to this thread info. I removed i8kmon and rebooted and now my fan goes off and on on it's own. And it did step up when I ran handbrake. Yet I still don't see where or what the temp limit is....

Fans off

sensors
acpitz-virtual-0
Adapter: Virtual device
temp1:        +27.8 C  (crit = +119.0 C)
temp2:        +29.8 C  (crit = +119.0 C)

coretemp-isa-0000
Adapter: ISA adapter
Physical id 0:  +49.0 C  (high = +100.0 C, crit = +100.0 C)
Core 0:         +48.0 C  (high = +100.0 C, crit = +100.0 C)
Core 1:         +47.0 C  (high = +100.0 C, crit = +100.0 C)
Core 2:         +45.0 C  (high = +100.0 C, crit = +100.0 C)
Core 3:         +47.0 C  (high = +100.0 C, crit = +100.0 C)

dell_smm-virtual-0
Adapter: Virtual device
Processor Fan:    0 RPM
Processor Fan:    0 RPM
CPU:            +49.0 C  
GPU:            +48.0 C  
SODIMM:         +51.0 C  

Fans on

sensors
acpitz-virtual-0
Adapter: Virtual device
temp1:        +27.8 C  (crit = +119.0 C)
temp2:        +29.8 C  (crit = +119.0 C)

coretemp-isa-0000
Adapter: ISA adapter
Physical id 0:  +36.0 C  (high = +100.0 C, crit = +100.0 C)
Core 0:         +36.0 C  (high = +100.0 C, crit = +100.0 C)
Core 1:         +32.0 C  (high = +100.0 C, crit = +100.0 C)
Core 2:         +32.0 C  (high = +100.0 C, crit = +100.0 C)
Core 3:         +33.0 C  (high = +100.0 C, crit = +100.0 C)

dell_smm-virtual-0
Adapter: Virtual device
Processor Fan: 1940 RPM
Processor Fan: 2132 RPM
CPU:            +36.0 C  
GPU:            +35.0 C  
SODIMM:         +50.0 C

Here is the record while going from idle to running handbrake and then idle again... About 2 minutes of time.
http://pastebin.com/3wphJS5C

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#34 2016-05-05 18:42:26

Klatu1974
Member
Registered: 2016-04-28
Posts: 7

Re: Help with fancontrol on dell laptop

Interesting, that shows your fan running even when the CPU and GPU are cool ~35 C.  This is the same frustrating thing I am seeing.  The fans keep running at that slow speed once they turn on, even with temps that appear to be cool.

I notice that the fans actually will shut off on their own once the SODIMM temp gets around 38 C.  But this rarely happens, unless the ambient temp is cool.   E.g, if I pop the bottom of the laptop off and blow on the mobo (LOL)  the fans actually shut off on their own.

There's also a PCH temp sensor on the mobo, which does not show up under lm-sensors.  This actually may what the BIOS is using to determine when to run the fans.   It shows up under Windoze in HWinfo64, and runs slightly warmer than the SODIMM temp.  It may run even hotter under Linux since the power states are screwy on this laptop. But I have not found a way to show that temp sensor.

Last edited by Klatu1974 (2016-05-05 18:53:31)

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#35 2016-05-05 23:15:37

workdowg
Member
Registered: 2010-12-31
Posts: 69

Re: Help with fancontrol on dell laptop

Klatu1974 wrote:

Interesting, that shows your fan running even when the CPU and GPU are cool ~35 C.  This is the same frustrating thing I am seeing.  The fans keep running at that slow speed once they turn on, even with temps that appear to be cool.

I notice that the fans actually will shut off on their own once the SODIMM temp gets around 38 C.  But this rarely happens, unless the ambient temp is cool.   E.g, if I pop the bottom of the laptop off and blow on the mobo (LOL)  the fans actually shut off on their own.

There's also a PCH temp sensor on the mobo, which does not show up under lm-sensors.  This actually may what the BIOS is using to determine when to run the fans.   It shows up under Windoze in HWinfo64, and runs slightly warmer than the SODIMM temp.  It may run even hotter under Linux since the power states are screwy on this laptop. But I have not found a way to show that temp sensor.

It's possible that a newer kernel will help. I don't see anything in the changelog about the Skylake processor though. So we may have to wait. Until the next new kernel version. 4.5.2 1 is still in testing and that's the one I don't see any changes for Skylake in.

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#36 2016-07-19 17:09:47

Klatu1974
Member
Registered: 2016-04-28
Posts: 7

Re: Help with fancontrol on dell laptop

Just wondering if you guys ever managed to figure out the fan control issue on this laptop?   I have not had any luck with even the latest 4.7 rc kernels.    It also seems like power management is broken on this laptop.  Under powertop idle stats, you can see that the cpu package does not go into low power states.  Perhaps this is causing the fan issue...

There's now a bug report on ubuntu launchpad about the fans, looks like others are having the same issue: https://bugs.launchpad.net/ubuntu/+sour … ug/1602888

Last edited by Klatu1974 (2016-07-19 17:11:15)

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#37 2016-07-19 22:42:59

Taijian
Member
Registered: 2016-04-10
Posts: 74

Re: Help with fancontrol on dell laptop

Have you tried setting i915.i915_enable_rc6=1 in your kernel command line? That helped me get my CPU package to lower power states, albeit on an Ivy Bridge system, so YMMV.

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#38 2016-07-20 02:49:19

Klatu1974
Member
Registered: 2016-04-28
Posts: 7

Re: Help with fancontrol on dell laptop

Yes, tried it.  Seems to make no difference.

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