> I was reading PowerTOP documentation and was curious whether it
could help me
> better manage power on my HP EliteBook 6930p laptop. I am running PowerTOP
> v.2.0 on openSUSE 12.2 64-bit. After looking at some of my options from the
> Overview and Stats tabs, I elected to run 'powertop --calibrate' as the docs
> suggest. PowerTOP did not complete the calibration process; it exited with a
> seg fault. Now the hardware button for WiFi (small button along the top of
> the laptop near the screen) flashes constantly. I'm concerned that PowerTOP
> caused some sort of hardware problem and damaged my laptop.
> Is there a way for me to check what PowerTOP did to my machine?
the calibration file will be instrumental, check if there are any
files under /var/cache/powertop?
Yes, there are two files in /var/cache/powertop/ though they are empty.
cms@6930p:~> ll /var/cache/powertop/
drwxr-xr-x 2 root root 4096 Nov 4 10:10 ./
drwxr-xr-x 15 root root 4096 Nov 4 10:10 ../
-rw-r--r-- 1 root root 0 Nov 4 10:48 saved_parameters.powertop
-rw-r--r-- 1 root root 0 Nov 4 10:48 saved_results.powertop
> Is there a way for me to completely revert any changes made by
The problem persists after many reboots.
Does the wifi LED still flash after a reboot? If so, I'm
it was RFKILL'ed. the 'rfkill' tool may be usable to un-rfkill it
I'm not sure about this one, but rfkill in not installed on my machine.
Are you suggesting I install rfkill and use it to fix the problem?
None of the changes powertop makes are permanent, and your systemd
should be operational if you reboot.
If you can, compile powertop from git, enable debug symbols (-g) and
run it under gdb and capture a backtrace, that will help us a lot
already to figure out where the problem may be.
I may try the newer version (v2.1) from RPM before compiling. I'll report
Thank you for your suggestions.