Reproes with the v4.14 kernel.
Power usage on idle is
4.14:~8W
4.13:~10W
4.10:~7W
There appears to have been a significant regression in power use from
4.10 to 4.13 that has been partially addressed in 4.14.
I got curious, and I get the same 100% busy report if I boot with the
legacy 4.10.37 kernel now (whereas I did not before), so this might be
an issue with powertop as upgraded with 17.10 and the bt driver might be
a red herring. Is there a more reliable way to measure power usage?
** Tags added: kernel-bug-exists-upstream
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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https://bugs.launchpad.net/bugs/1723777
Title:
Apple bluetooth USB driver is 100% busy despite BT switched off
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