On Sat, Jun 18, 2022 at 07:42:43AM +0100, Giles Roadnight wrote: > Hi > > I am trying to connect a Prolific pl2303 to my raspberry pi 4 running > raspberry pi os 64 bit. When I look at dmesg I get the following > output: > > [ 31.714397] cam-dummy-reg: disabling > [ 44.046197] usb 1-1.1: USB disconnect, device number 3 > [ 47.254348] usb 1-1.1: new full-speed USB device number 4 using xhci_hcd > [ 47.361386] usb 1-1.1: New USB device found, idVendor=067b, > idProduct=23a3, bcdDevice= 6.05 > [ 47.361402] usb 1-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 > [ 47.361407] usb 1-1.1: Product: USB-Serial Controller > [ 47.361412] usb 1-1.1: Manufacturer: Prolific Technology Inc. > [ 47.361417] usb 1-1.1: SerialNumber: ALBAb115819 > [ 47.364081] pl2303 1-1.1:1.0: pl2303 converter detected > [ 47.364106] pl2303 1-1.1:1.0: unknown device type, please report to > linux-usb@xxxxxxxxxxxxxxx > > so I followed the example and emailed this address! > > and with lsusb: This has been fixed in mainline and backported to the relevant stable trees (5.17.2, 5.16.19, 5.15.33) at the beginning of April. You didn't mention which kernel you use, but updating to a more recent one should fix this. Johan
