Just tried out the kernel as per instructions

Linux HomeMegaUbuntu 4.3.0-040300-generic #201511020949 SMP Mon Nov 2
14:50:44 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

echo 200 > /sys/class/hwmon/hwmon3/pwm1
echo 70 > /sys/class/hwmon/hwmon3/pwm1

results in the erratic fan speed.

if no erratic behaviour wait for a few hours (seems to be about 4
-5hours) and the erratic fan behaviour starts.

to stop it 
echo 200 > /sys/class/hwmon/hwmon3/pwm1
echo 70 > /sys/class/hwmon/hwmon3/pwm1

seems to work for me for a few hours before it starts up again.

Interesting that

echo 200 > /sys/class/hwmon/hwmon3/pwm1

results in high CPU fan speed with slow changes in erratic fan (as shown
above) superimposed on top of high fan speed.

-- 
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1514052

Title:
  erratic fan speed and little control kernel 4.2

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1514052/+subscriptions

-- 
ubuntu-bugs mailing list
ubuntu-bugs@lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs

Reply via email to