Public bug reported: Clean Ubuntu 22.04 LTS install. brltty grabs several of my FTDI USB serial port adapters and all six of my Arduinos. It appears this happens because there is a new udev rule that wasn't in Ubuntu 21.10:
$ lsusb Bus 002 Device 013: ID 0403:6001 Future Technology Devices International, Ltd FT232 Serial (UART) IC $ grep -i ftdi /lib/udev/rules.d/* 85-brltty.rules:# HandyTech [FTDI chip] 85-brltty.rules:ENV{PRODUCT}=="403/6001/*", ATTRS{manufacturer}=="FTDI", ENV{BRLTTY_BRAILLE_DRIVER}="hd,hm,ht", GOTO="brltty_usb_run" Appears to be the same bug as the following (i.e. brltty is grabbing a LOT of USB serial chips): Bug #1970408 Bug #1958224 It appears there are two fixes: 1. Comment out the offending udev rule. 2. Uninstall brltty. That's what I did. ** Affects: brltty (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1972030 Title: BRLTTY grabs my FTDI USB serial port adapter & Arduinos! To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/brltty/+bug/1972030/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs