adding xfce4-battery-panel to the panel cause a large increase of the wakeups of acpi: output of powertop [1] Top causes for wakeups: 47.2% ( 63.1) <interrupt> : acpi 10.7% ( 14.3) xfce4-battery-p : schedule_timeout (process_timeout) expected: a refresh time between 1 and 5 s [1] http://www.linuxpowertop.org/ best regards Guglie
Same issue : with xfce4-battery-panel : powertop : 45,5% (209,6) <interrupt> : acpi without : 1,9% ( 4,0) <interrupt> : acpi 1 refresh / second is a good value for this information.
problem is that the timeout for acpi updates is 2 seconds, but each acpi read causes 4-5 acpi interrupts total, so we end up with 2-3 interrupts per second average. I'm changing the timeout interval so that it's significantly less (30s interval). That will fix the issue for now. The change is already in SVN and an updated tarball should be coming soon.
Addressed in release 0.5.1.