I'm on Kubuntu 17.04 and this bug persists on my Dell 7759 with bios
1.2.2. When fan is turned on never more is turned off.
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https://bugs.launchpad.net/bugs/1602888
Title:
Dell Inspiron 7559 fans do not shut off once started, even when cool
Status in linux package in Ubuntu:
Confirmed
Bug description:
Running Ubuntu 16.04 on a Dell Inspiron 7559 laptop there appears to
be an issue with the fan control. When I first boot up the machine the
fans are off. However, after the laptop warms up under normal usage,
the fans kick on and then never shut off again. Even when the CPU
cools down to below 35c, the fans will continue to run.
If I suspend the the laptop, and then immediately wake it up again
then fans are once again off, until it warms up again. So
essentially, once the fans start they don't seem to ever shut off.
Fans seem to work normally under Windows 10. They turn on as needed,
and then turn off once the laptop cools down.
I've tried the various BIOS updates that Dell has released, without
success. I am currently running Dell's latest BIOS for this laptop
(v1.1.8)
Below is the output of lm-sensors showing the fans running when the
CPU is at a cool 35c
dell_smm-virtual-0
Adapter: Virtual device
Processor Fan: 1925 RPM
Processor Fan: 2143 RPM
CPU:+35.0°C
GPU: +1.0°C
SODIMM: +49.0°C
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-28-generic 4.4.0-28.47
ProcVersionSignature: Ubuntu 4.4.0-28.47-generic 4.4.13
Uname: Linux 4.4.0-28-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
AudioDevicesInUse:
USERPID ACCESS COMMAND
/dev/snd/controlC0: bob1709 F pulseaudio
CurrentDesktop: Unity
Date: Wed Jul 13 19:18:45 2016
HibernationDevice: RESUME=UUID=14de580b-76f3-47e4-9850-fe7637f9ff77
InstallationDate: Installed on 2016-07-13 (0 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64
(20160420.1)
MachineType: Dell Inc. Inspiron 7559
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-28-generic.efi.signed
root=UUID=0b3dbcf3-0bdb-4c35-9200-7bb303055a81 ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-4.4.0-28-generic N/A
linux-backports-modules-4.4.0-28-generic N/A
linux-firmware1.157.2
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/17/2016
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.1.8
dmi.board.name: 0H0CC0
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: Not Specified
dmi.modalias:
dmi:bvnDellInc.:bvr1.1.8:bd04/17/2016:svnDellInc.:pnInspiron7559:pvr1.1.8:rvnDellInc.:rn0H0CC0:rvrA00:cvnDellInc.:ct8:cvrNotSpecified:
dmi.product.name: Inspiron 7559
dmi.product.version: 1.1.8
dmi.sys.vendor: Dell Inc.
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