Battery drains on suspend, much faster than expected. Maybe 2%/h. 48h not using the computer and it's out.
There are many supported sleep states :
Most system supports the 3 of them.
% sudo dmesg | grep ACPI | grep supports [ 0.945944] ACPI: (supports S0 S3 S4 S5)
This way, the system can always restart from the image, but :
- it takes longer
- it doesn't help with the side-effects of a dirty shutdown, such as the USB3 issues
The system should hibernate after a while on suspend mode (S3) / sleep mode (S0)
- archlinux wiki on the matter : https://wiki.archlinux.org/index.php/Power_management/Suspend_and_hibernate