On latest git, powertop shows 20 ACPI interrupts per second. Previously, this was closer to 1 per second. See attached output (a vs b, "a" is from 2.6.29-rc8).
This is from a pretty sparse KDE desktop. Normally I run gnome-power-manager, but I killed it to make sure that wasn't causing any problems.
alan@alan-eeepc:/sys/firmware/acpi/interrupts$ grep -v "invalid" *
error: 0
ff_gbl_lock: 0 enabled
ff_pwr_btn: 0 enabled
ff_rt_clk: 0 disabled
gpe03: 0 disabled
gpe04: 0 disabled
gpe05: 0 disabled
gpe09: 0 disabled
gpe0B: 0 disabled
gpe0C: 0 disabled
gpe0D: 0 disabled
gpe0E: 0 disabled
gpe18: 60975 enabled
gpe_all: 60975
sci: 60975
which I presume means lots of EC interrupts.
[ 0.134068] ACPI: EC: GPE = 0x18, I/O: command/status = 0x66, data = 0x62
Any ideas?
Thanks
Alan