https://github.com/raspberrypi/linux/pull/5736/commits/a57989416faf34a4d7358f3786c0de52e5af81cc
** Changed in: linux-raspi (Ubuntu)
Status: New => Invalid
** Changed in: linux-raspi (Ubuntu Mantic)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/2044341
Title:
Fan toggles on/off repeatedly
Status in linux-raspi package in Ubuntu:
Invalid
Status in linux-raspi source package in Mantic:
Confirmed
Bug description:
https://bugs.launchpad.net/ubuntu/+source/linux-
raspi/+bug/2041741/comments/9
@waveform I'm not sure if that is the final solution. With your build
speed control works but the set hysteresis (default: 5°C) seems to be
ignored. This results in very frequent changes around trip points.
Did you just fix the uninitialized variable or apply the whole commit
(https://github.com/raspberrypi/linux/commit/29d2bdf66191b6e50deef2110792c43c10cccfd9)?
E.g. lots of changes between states 0 and 1, with the fan sometimes
stopping for just a fraction of a second:
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