[Bug 1958224] Re: brltty claiming cp210x devices on 22.04

[Launchpad Bug Tracker]

This bug was fixed in the package brltty - 6.4-6ubuntu1

---------------
brltty (6.4-6ubuntu1) kinetic; urgency=medium

  * Resynchronize on Debian
    - Remaining changes:
      + add brltty-setup
        - debian/brltty-setup
        - debian/brltty.install
        - debian/rules
      + add initramfs integration to run brltty-setup if necessary before
        plymouth starts
        - debian/control
        - debian/initramfs/brltty.sh
        - debian/initramfs/hooks/brltty.in
        - debian/initramfs/scripts/init-premount/brltty
        - debian/initramfs/scripts/init-top/brltty
        - debian/brltty.dirs
        - debian/brltty.install
        - debian/brltty.postinst
      + add ubiquity integration to propagate any brltty configuration to the
        target system
        - debian/31brltty
        - debian/brltty.dirs
        - debian/brltty.install
      + add udev rules file that uses brltty-udev.service to activate via
        systemd
        - debian/brltty-udev.service
        - debian/brltty.dirs
        - debian/brltty.udev.rules
        - debian/rules
      + disable brltty.service by default, but enable it if the user configures
        Braille at install time for a non-USB display
        - debian/31brltty
        - debian/rules
      + don't install /etc/brltty.conf in the package
        - debian/31brltty
      + debian/brltty.udev.rules: don't claim generic USB device IDs it leads
        to brltty grabbing serial ports which other devices like Arduinos
        boards can't use anymore, thanks Samuel Thibault (lp: #1958224)

brltty (6.4-6) unstable; urgency=medium

  * patches/paste-newlines: Fix pasting newlines in X with the brltty
    shortcut.
  * patches/paste-firefox-lo: Fix pasting into FireFox and LibreOffice.
  * debian/brltty-udeb.prebaseconfig: Use ':' in chown.

brltty (6.4-5) unstable; urgency=medium

  * patches/py310-sysconfig: Fix build with python 3.10 (Closes:
Bug#1007927)

 -- Sebastien Bacher <seb128 at ubuntu.com>  Thu, 12 May 2022 16:01:05
+0200

** Changed in: brltty (Ubuntu)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1958224

Title:
  brltty claiming cp210x devices on 22.04

Status in brltty package in Ubuntu:
  Fix Released
Status in brltty source package in Jammy:
  Confirmed
Status in brltty package in Debian:
  Confirmed

Bug description:
  * Impact

  The brltty udev rules are claiming generic devices IDs which makes
  some other devices like Arduino cards not able to interact with the
  serial port anymore

  * Test Case

  Try to use an Arduino over a cp210x or FTDI serial port, it should be
  able to talk to the computer

  * Regression potential

  There are some braille devices on the market using generic IDs which
  are going to stop working out of the box. Those devices are uncommon
  and it's arguably an hardware bugs they are using those IDs.

  -------------------

  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

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