[  634.289472] usb 2-1.1: new full-speed USB device number 15 using xhci_hcd
[  634.391320] usb 2-1.1: New USB device found, idVendor=1a86, idProduct=7523, bcdDevice= 2.54
[  634.391334] usb 2-1.1: New USB device strings: Mfr=0, Product=2, SerialNumber=0
[  634.391340] usb 2-1.1: Product: USB2.0-Serial
[  634.400009] ch341 2-1.1:1.0: ch341-uart converter detected
[  634.400640] usb 2-1.1: ch341-uart converter now attached to ttyUSB0
[  634.951019] input: BRLTTY 6.4 Linux Screen Driver Keyboard as /devices/virtual/input/input31
[  635.042103] usb 2-1.1: usbfs: interface 0 claimed by ch341 while 'brltty' sets config #1
[  635.042749] ch341-uart ttyUSB0: ch341-uart converter now disconnected from ttyUSB0
[  635.042781] ch341 2-1.1:1.0: device disconnected