I am very new to linux ubuntu. I just changed from windows 8.1 to ubuntu 17.04 completely and tadaam problems started. My battery was charging only until 59% then I tried some fixes but now I can not boot my laptop on battery. I have to plug in my AC charger to turn my laptop on. With some solution I read on internet i thought i have some kind of acpi problem but I my terminal says acpi not found. I dont know here can I download acpi. This is the status of my battery;
upower -i /org/freedesktop/UPower/devices/battery_BAT0
native-path: (null) power supply: no updated: Do 01 Jan 1970 01:00:00 CET (1495714310 seconds ago) has history: no has statistics: no unknown warning-level: unknown icon-name: '(null)'
I am using Lenovo ideapad s400 Intel core i5.
Please could some body help me? or I should go back to windows :(