06-30-2023, 12:10 AM
I have exactly the same issue (blank screen, error in drm_mode_object_add):/ the UART log is at https://pastebin.com/4rv7gbYE .
I first plugged the cable into the other USB port, it has to be in the one labeled DEBUG. Perhaps run "dmesg -w" and you should see something like this after you plug it in (it does not have to be in the PineTab, as it takes power from your computer):
Quote:Following the directions from the wiki page to connect to the UART adapter, I run into trouble as I don't see a /dev/ttyUSB0 on my system.
I first plugged the cable into the other USB port, it has to be in the one labeled DEBUG. Perhaps run "dmesg -w" and you should see something like this after you plug it in (it does not have to be in the PineTab, as it takes power from your computer):
Code:
[94825.741027] usb 1-2.4.1: new full-speed USB device number 19 using xhci_hcd
[94825.850246] usb 1-2.4.1: New USB device found, idVendor=1a86, idProduct=7523, bcdDevice=81.33
[94825.850257] usb 1-2.4.1: New USB device strings: Mfr=0, Product=2, SerialNumber=0
[94825.850261] usb 1-2.4.1: Product: USB Serial
[94825.902691] ch341 1-2.4.1:1.0: ch341-uart converter detected
[94825.909575] usb 1-2.4.1: ch341-uart converter now attached to ttyUSB0
