I got Ubuntu 15.04 running on a Dell 3147. Under Power settings, I have When plugged in set to Don't suspend. It seems that after the battery has reached 100% it no longer honors this setting, instead dropping down to the On battery power setting (which I have set for 20 minutes).
Any thoughts?
Is there any way I can say "when plugged in OR at 100%"?
Ubuntu and Batteries do not co-operate very well. I would suggest trying out TLP. I have found TLP to solve few of my Battery related issues from 12.04 LTS to 14.04 LTS on Dell Latitude Series.
Look the accepted and thoroughly written Answer here: Is there a power saving application similar to Jupiter? (Its too long to repeat, nor I wish to take credit for it -It helped me a lot)
Installing:
sudo add-apt-repository ppa:linrunner/tlp
sudo apt-get update
sudo apt-get install tlp tlp-rdw
Removing:
sudo apt-get remove tlp
sudo add-apt-repository --remove ppa:linrunner/tlp
Links to TLP Official Site for Further and extra information how set/edit/modify/configure TLP and its functions.
http://linrunner.de/en/tlp/docs/tlp-linux-advanced-power-management.html
I highly recommend to read the above post and Linrunner TLP Guide.
