Comment 35 for bug 1973633

I tried to use my MSI laptop with and without external displays, with battery saver mode + wifi disabled (ethernet connection) + Bluetooth disabled; and the battery life I have from 60% to 10% is of 1h55min with external monitors and of 2h28min without. So no drastic difference, here are the outputs of `cat /sys/bus/pci/devices/0000:03:00.1/power_state` and `grep . /sys/bus/pci/devices/0000:03:00.1/power/*` without external displays:

mustang@MSI:~/mnt/gwdg$ cat /sys/bus/pci/devices/0000:03:00.1/power_state
D0
mustang@MSI:~/mnt/gwdg$ grep . /sys/bus/pci/devices/0000:03:00.1/power/*
/sys/bus/pci/devices/0000:03:00.1/power/async:enabled
/sys/bus/pci/devices/0000:03:00.1/power/autosuspend_delay_ms:0
/sys/bus/pci/devices/0000:03:00.1/power/control:auto
/sys/bus/pci/devices/0000:03:00.1/power/runtime_active_kids:0
/sys/bus/pci/devices/0000:03:00.1/power/runtime_active_time:18655975
/sys/bus/pci/devices/0000:03:00.1/power/runtime_enabled:enabled
/sys/bus/pci/devices/0000:03:00.1/power/runtime_status:active
/sys/bus/pci/devices/0000:03:00.1/power/runtime_suspended_time:19568
/sys/bus/pci/devices/0000:03:00.1/power/runtime_usage:0
/sys/bus/pci/devices/0000:03:00.1/power/wakeup:disabled

I can also do a test with my windows partition if you wish, but I know I have ~9 to 10h of battery life from a 100% charge with battery saver mode, I don't think we'll ever match what I get with ubuntu atm. It's really a shame that MSI does not work more closely with linux distributions for those new high end laptops... (btw the keyboard backlight cannot be turned off on ubuntu neither, I have (i) to boot on windows, (ii) disable keyboard backlight with MSI center tool and (iii) reboot on my ubuntu partition. I've already tried almost everything proposed on the web).