So I have a new Dell XPS 15" with a 97 wH battery, a 4k display and a NVIDIA GTX 1050. I installed GNOME 3 as my flavor of UBUNTU (16.04 LTS). In addition I added the
nvidia-prime driver and
All together I get a battery life indicator which is widely inconsistent. Let's say I have selected to use my Intel GPU for the moment (and dimmed my 4k display to the lowest brightness). Then on a full charge my battery indicator estimates a time of 9 hours. Amazing! Then it immediately drops to 2 hours (realistic), then I open Google Chrome to post this question and we are back at 8 hours. And right now (maybe 3 minutes into typing this) we are at 7 hours. Checked it again and it is 4 hours. Just checked once more back at 6 hours.
So besides from me naturally wanting to have a computer with 9 hours of battery life, I would at least like an accurate and consistent read.
I have tried to take screen shots but I cant keep the battery drop down open and use my hotkey for some reason...