I don't know about usbC, but if you leave barrel charger in a long time, red (charge) led WILL go out (pbp off)
Manjaro mounts by label, a fruitful source of (kernel) confusion, if there are 2 partitions with same label ...
and,, manjaro does not seem to have best uboot, do realize that uboot on emmc will be one used
I strongly suggest mrfixit's debian, do his update (NOT apt update) as a recovery SD
Use it with disabled emmc, then flip switch and rebind
If you have a linux box, check that extlinux root= is right, also fstab
If you want to use manjaro as a recovery SD, change label and extlinux and fstab
Manjaro mounts by label, a fruitful source of (kernel) confusion, if there are 2 partitions with same label ...
and,, manjaro does not seem to have best uboot, do realize that uboot on emmc will be one used
I strongly suggest mrfixit's debian, do his update (NOT apt update) as a recovery SD
Use it with disabled emmc, then flip switch and rebind
If you have a linux box, check that extlinux root= is right, also fstab
If you want to use manjaro as a recovery SD, change label and extlinux and fstab