Hi!
I have a MG-10T mini pc with 32 bit debian10 (4.19.0-12-686pae) and the card reader stop working.
In terminal lsusb command says:
Bus 004 Device 004: ID: 0bda:0138 Realtek semiconductor Corp. RTS5138 Card Reader Controller
But it doesn't work. I updated my system some days earlier but I don't know when stopped working. It worked earlier.
It works correctly under win7.
Thanks.