I was getting this error:
[23081.890579] usb 3-3: New USB device strings: Mfr=0, Product=2, SerialNumber=0 [23081.890580] usb 3-3: Product: USB Serial [23081.892947] ch341 3-3:1.0: ch341-uart converter detected [23081.893472] usb 3-3: ch341-uart converter now attached to ttyUSB0 [23085.798948] usb 3-3: usbfs: interface 0 claimed by ch341 while 'brltty' sets config #1 [23085.799730] ch341-uart ttyUSB0: ch341-uart converter now disconnected from ttyUSB0 [23085.799756] ch341 3-3:1.0: device disconnected
Fortunately I found this solution: https://unix.stackexchange.com/questions/670636/unable-to-use-usb-dongle-based-on-usb-serial-converter-chip
for f in /usr/lib/udev/rules.d/*brltty*.rules; do sudo ln -s /dev/null "/etc/udev/rules.d/$(basename "$f")" done sudo udevadm control --reload-rules
And disabling the service:
$ sudo systemctl mask brltty.path Created symlink /etc/systemd/system/brltty.path → /dev/null.
It worked, now /dev/ttyUSB0 keeps on!