I installed powertop package to find out what my power usage is. But when I start powertop and wait (hours..), it gives me no information about my power usage, of course I'm on battery:
PowerTOP version 1.13 (C) 2007 Intel Corporation Cn Avg residency P-states (frequencies) C0 (cpu running) ( 0.0%) 2.27 Ghz 1.6% polling 31.8ms ( 0.3%) 2.14 Ghz 0.0% C1 mwait 0.1ms ( 0.0%) 1466 Mhz 0.1% C2 mwait 1.1ms ( 1.4%) 1333 Mhz 0.3% C3 mwait 6.0ms (108.6%) 933 Mhz 98.0% Wakeups-from-idle per second : 193.9 interval: 5.0s no ACPI power usage estimate available Top causes for wakeups: 34.7% ( 62.4) [i915] <interrupt> 12.8% ( 23.0) kworker/0:1 11.9% ( 21.4) kworker/0:0 10.9% ( 19.6) [ath9k] <interrupt> 6.2% ( 11.2) [kernel core] hrtimer_start (tick_sched_timer) 5.6% ( 10.0) kworker/u:1
btw. What about my wakeups, is it OK ?
My laptop is Asus A52f.
Thanks in advance.
maybe its due to the recent removal of config ACPI_PROCFS_POWER in standart kernel config. Try reinstall kernel 3.0.4 or compiling custom kernel with ACPI_PROCFS_POWER on.
It has already been reported https://bugs.archlinux.org/task/26416 for powertop 2 - you can add a comment that powertop 1 is also affected.
Last edited by karol (2011-10-13 23:27:51)
Thanks, I'll wait until a new version of powertop with support of 3.0.6 is released. No need to downgrade/recompile kernel to find out this not much relevant piece of information.
Last edited by Vena (2011-10-14 00:03:34)
Looks like other random things have broken too. Yacpi and osdbattery here. (And my brightness buttons, but that might be something else entirely.)
"acpi -V" still gives plenty of useful information at least.
yacpi and libacpi were both created by the same guy. Both tools use only the deprecated /proc/acpi.
acpi tool is the only one I've found so far that is fully compatible with any kernel version.
Remark: all those changes in from /proc/acpi to sysfs not only cover the battery stuffs but also fans, thermal zones info, etc... so other tools might be "broken" as well.
I've been affected too and the proc -> sysfs 'reaffirmation' of sorts was my first thought.
Still my issue lies somewhere in between. Powertop simply displays wrong output, now saying my old laptop lasts around 47 hours @ 1 Watt when fully charged -- either that, or my laptop did found the key to ultimate power consumption efficiency while I was sleeping. Damn Transformer.