https://bugzilla.kernel.org/show_bug.cgi?id=85881
Bug ID: 85881
Summary: gpe66 interrupt keeps cpu continuously active
Product: ACPI
Version: 2.5
Kernel Version: 3.17.0
Hardware: All
OS: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Config-Interrupts
Assignee: [email protected]
Reporter: [email protected]
Regression: No
I'm using a macbook pro late 2013, and after upgrading to OSX Yosemite Beta 4 I
got an important battery life reduction with Linux: my cpu is always at 50-80%
of utilization (and top says that is kworker that keeps it active).
I suspect this is due to a firmware update.
After a little investigation I found that the problem could be the gpe66
interrupt.
This is after about 10 seconds from boot:
# cat /sys/firmware/acpi/interrupts/gpe66
22414625 enabled
and the temporal solution (which seems to solve the problem) is to disable it
with:
# echo disable > /sys/firmware/acpi/interrupts/gpe66
is this a kernel bug or just a firmware problem?
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