As mentioned by Sebastien above, I have a smiliar issue which is blocking the use of the USB as serial port for use with Arduino. If this helps, my dist-upgrade log is available in another bug report if you want to have a look: https://bugs.launchpad.net/ubuntu/+source/ubuntu- release-upgrader/+bug/1969353
Based on the content, it looks to me like brltty was already there prior to upgrade and I also woudn't have used brltty during installation which was only done 2-3 weeks before upgrade. I also just did a fresh install in a virtual machine and brltty is also there. It looks to me like this package is a dependancy of ubuntu-desktop or similar through orca: $ apt-cache rdepends brltty brltty Reverse Depends: brltty-espeak xubuntu-desktop vanilla-gnome-desktop ubuntukylin-desktop ubuntu-unity-desktop ubuntu-budgie-desktop speechd-el brltty-x11 brltty-speechd brltty-flite orca ubuntu-desktop-minimal ubuntu-desktop for info, I did also check on a fresh Debian Testing install and the package isn't installed by default there. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to brltty in Ubuntu. https://bugs.launchpad.net/bugs/1958224 Title: brltty claiming cp210x devices on 22.04 Status in brltty package in Ubuntu: New Bug description: Distributor ID: Ubuntu Description: Ubuntu Jammy Jellyfish (development branch) Release: 22.04 Codename: jammy brltty: Installed: 6.4-2ubuntu1 brltty appears once again to be claiming cp210x devices with the vendor/product ID of: idVendor=10c4, idProduct=ea60 Example dmesg output: 999.215968] usb 3-6.3: New USB device found, idVendor=10c4, idProduct=ea60, bcdDevice= 1.00 [ 999.215973] usb 3-6.3: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 999.215975] usb 3-6.3: Product: CP2103 USB to UART Bridge [ 999.215977] usb 3-6.3: Manufacturer: Silicon Labs [ 999.215978] usb 3-6.3: SerialNumber: 0005 [ 999.234070] usbcore: registered new interface driver usbserial_generic [ 999.234081] usbserial: USB Serial support registered for generic [ 999.235262] usbcore: registered new interface driver cp210x [ 999.235272] usbserial: USB Serial support registered for cp210x [ 999.235298] cp210x 3-6.3:1.0: cp210x converter detected [ 999.237039] usb 3-6.3: cp210x converter now attached to ttyUSB0 [ 999.300049] input: PC Speaker as /devices/platform/pcspkr/input/input41 [ 999.807223] input: BRLTTY 6.4 Linux Screen Driver Keyboard as /devices/virtual/input/input42 [ 999.991926] usb 3-6.3: usbfs: interface 0 claimed by cp210x while 'brltty' sets config #1 [ 999.995045] cp210x ttyUSB0: cp210x converter now disconnected from ttyUSB0 [ 999.995066] cp210x 3-6.3:1.0: device disconnected To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/brltty/+bug/1958224/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
