3 days in, slow/stuck or no boot.
>''Card did not respond to voltage select! :110''
This is the problem, clearly uboot has usb0 in the boot_targets list
which is how it can boot from reader
Try .... put some other card into uSD slot (when booted from usb),,
is it readable? try putting the pm OS on a different card
BTW, the error (1st line) is not from uboot, it is from pm OS
(since pm OS tries to boot (in uSD) then at least the config files are being read)
If no uSD card is readable, then that is defective (the reader)
use lsblk to see what is readable
"bad" uSD cards are not an uncommon thing
This is the problem, clearly uboot has usb0 in the boot_targets list
which is how it can boot from reader
Try .... put some other card into uSD slot (when booted from usb),,
is it readable? try putting the pm OS on a different card
BTW, the error (1st line) is not from uboot, it is from pm OS
(since pm OS tries to boot (in uSD) then at least the config files are being read)
If no uSD card is readable, then that is defective (the reader)
use lsblk to see what is readable
"bad" uSD cards are not an uncommon thing