You have been subscribed to a public bug: Looks like 5.13.0 kernel broke something in the USB-serial PL2303 driver module. I have a Sky-Watcher EQ6-R Pro telescope mount with a PL23D3 USB-serial chip (I think). My MSECORE mini PC running Ubuntu 20.04.3 has been working with this mount for the last couple of years with the 5.11 kernel. Now with the 5.13 kernel, the pl2303 module doesn't recognize the USB-serial device. I revert back to the 5.11 kernel and it works fine again. Here's the snippets from dmesg:
5.13.0-28-generic kernel: [ 2.894277] usbcore: registered new interface driver usbserial_generic [ 2.894292] usbserial: USB Serial support registered for generic [ 2.907539] usbcore: registered new interface driver pl2303 [ 2.907574] usbserial: USB Serial support registered for pl2303 [ 2.907596] pl2303 1-6:1.0: pl2303 converter detected [ 2.907602] pl2303 1-6:1.0: unknown device type, please report to [email protected] 5.11.0-27-generic kernel [ 3.201216] usbcore: registered new interface driver pl2303 [ 3.201228] usbserial: USB Serial support registered for pl2303 [ 3.201243] pl2303 1-5:1.0: pl2303 converter detected [ 3.201349] usb 1-5: pl2303 converter now attached to ttyUSB1 ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Tags: 5.13.0 bot-comment eq6-r pl2303 pl23d3 -- PL2303 Driver Bug in 5.13 Kernel https://bugs.launchpad.net/bugs/1960579 You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. -- Mailing list: https://launchpad.net/~kernel-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
