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Hak5 1225 – Linux laptop battery optimization and using encryption with dropbox


  • Josh

    Yo guys love the show! For better battery performance could you not actually have no hard disk at all and just run the optimised OS off of a USB? Surely this would save a couple of Watts as the USB is usually running over the south-bridge right? (This may vary depending on the architecture of the machine though I guess). Also, if you have any optical drives, removing them could save some Watts. 🙂

  • Flavio

    For power management on the finger tips on my laptop I use an app called jupiter. you can find it on Ubuntu reps.
    I am using Mint 14 on an ACER5830GT, and after doing all the stuff from this episode, plus using jupiter and bumblebee to manage the second video card (NVIDIA GT520M), I got to 13W, but I have 2 drives one SDD for the OS’s and one HDD for data.
    Another tip is keep the brightness low, this saves me 1.5 W. The wireless is still the vilan with around 2 to 3 watts.
    Keep up the good work.

  • EazyVG

    A very good video and overview with tips.

    FYI: I am currently running kernel 3.4.28 (openSUSE 12.2) and my battery consumption is quite good (tip: #powertop tunables=good), idling at around 7-8W with screen @60% and Wireless=On.
    Apart from powertop tunables, no other tweaks.

  • rakudave

    Warning: When using a tmpfs for /var/spool your crontab will disappear every time you reboot. Took me some time to realize why my crontab was misteriously vanishing from time to time (they are stored in /var/spool/cron/crontabs/, at least in *buntu).

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