Laptop in title has Ubuntu 18.04 installed and after installing the latest update yesterday (9.7.2018) fan(s) were running continuously. I have proprietary NVIDIA drivers installed and until yesterday everything worked fine.

After inspecting temperatures, I compared them to a similar setup (samo brand and model and Ubuntu 18.04) and mine were relatively high and the same goes for fan speeds.

> sensors
dell_smm-virtual-0
Adapter: Virtual device
Processor Fan: 4104 RPM
Video Fan:     4100 RPM
CPU:            +62.0°C  
Ambient:        +60.0°C  
Ambient:        +56.0°C  
Other:          +39.0°C  

acpitz-virtual-0
Adapter: Virtual device
temp1:        +25.0°C  (crit = +107.0°C)

pch_skylake-virtual-0
Adapter: Virtual device
temp1:        +57.0°C  

coretemp-isa-0000
Adapter: ISA adapter
Package id 0:  +60.0°C  (high = +100.0°C, crit = +100.0°C)
Core 0:        +58.0°C  (high = +100.0°C, crit = +100.0°C)
Core 1:        +59.0°C  (high = +100.0°C, crit = +100.0°C)
Core 2:        +57.0°C  (high = +100.0°C, crit = +100.0°C)
Core 3:        +57.0°C  (high = +100.0°C, crit = +100.0°C)

This is the other laptop which works as expected:

coretemp-isa-0000
Adapter: ISA adapter
Package id 0:  +53.0°C  (high = +100.0°C, crit = +100.0°C)
Core 0:        +53.0°C  (high = +100.0°C, crit = +100.0°C)
Core 1:        +52.0°C  (high = +100.0°C, crit = +100.0°C)
Core 2:        +52.0°C  (high = +100.0°C, crit = +100.0°C)
Core 3:        +52.0°C  (high = +100.0°C, crit = +100.0°C)

acpitz-virtual-0
Adapter: Virtual device
temp1:        +25.0°C  (crit = +107.0°C)

dell_smm-virtual-0
Adapter: Virtual device
Processor Fan: 2514 RPM
Video Fan:     2504 RPM
CPU:            +56.0°C  
Ambient:        +50.0°C  
Ambient:        +48.0°C  
Other:          +36.0°C  

pch_skylake-virtual-0
Adapter: Virtual device
temp1:        +52.0°C  

Install i8kutils:

sudo apt install i8kutils

Follow the guide How to solve Dell laptops fan issues in Ubuntu.

  • 1
    Thanks for your input. I have thought of this solution, but I opted for switching to onboard graphics until this issue is solved on the level which was broken (kernel? graphics drivers?). – Roman Luštrik Jul 10 at 11:20
up vote 0 down vote accepted

My guess is that something has been done with the graphics drivers. Until this is fixed, an intermediate solution is to switch to onboard graphics (see here). In short, run nvidia-settings and select PRIME Profiles and use Intel (Power Saving Mode).

This is the image from the link: enter image description here

You should see the change in Details enter image description here

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