sysfs has details on current, voltage etc under the battery node
/sys/class/power_supply/BATn. However, under the
AC node, none of these details are available.
I'd like to know how to go about determining what the problem is,
- Doesn't the hardware provide the data?
- Do I lack a kernel module?
- Some detail lacking in BIOS?
- Any other questions that should be asked?
My kernel is 5.12.6 (archlinux)