Re: [Powertop] Strange Behavior - PowerTOP 2.0 Seg Fault

On Sun, Nov 4, 2012 at 7:51 AM, <cshanahan(a)comcast.net&gt; wrote: > Hello, > > 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? > Is there a way for me to completely revert any changes made by PowerTOP? reboot. Does the wifi LED still flash after a reboot? If so, I'm wondering if it was RFKILL'ed. the 'rfkill' tool may be usable to un-rfkill it again. None of the changes powertop makes are permanent, and your systemd should be operational if you reboot. > uname -a > Linux 6930p.site 3.4.11-2.16-desktop #1 SMP PREEMPT Wed Sep 26 17:05:00 UTC 2012 (259fc87) x86_64 x86_64 x86_64 GNU/Linux > > 6930p:~ # powertop --calibrate > Starting PowerTOP power estimate calibration > Calibrating idle > Segmentation fault 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.