** Attachment added: "output of lsusb" https://bugs.launchpad.net/ubuntu/+source/brltty/+bug/1990189/+attachment/5617194/+files/lsusb
-- 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/1990189 Title: brlttty claiming CH341 usbtty device blocking access Status in brltty package in Ubuntu: New Bug description: While this problem seems to have been fixed for FTDI and CP210 based devices CH340/CH341 based (and possibly other USB serial adapters) are unusable except by brltty. [139099.253351] usb 1-2.1.2: new full-speed USB device number 17 using xhci_hcd [139099.370766] usb 1-2.1.2: New USB device found, idVendor=1a86, idProduct=7523, bcdDevice= 2.63 [139099.370777] usb 1-2.1.2: New USB device strings: Mfr=0, Product=2, SerialNumber=0 [139099.370782] usb 1-2.1.2: Product: USB2.0-Serial [139099.414885] ch341 1-2.1.2:1.0: ch341-uart converter detected [139099.429265] usb 1-2.1.2: ch341-uart converter now attached to ttyUSB0 [139100.045076] input: BRLTTY 6.4 Linux Screen Driver Keyboard as /devices/virtual/input/input24 [139100.782817] usb 1-2.1.2: usbfs: interface 0 claimed by ch341 while 'brltty' sets config #1 [139100.786100] ch341-uart ttyUSB0: ch341-uart converter now disconnected from ttyUSB0 [139100.786136] ch341 1-2.1.2:1.0: device disconnected [143917.740171] usb 1-2.1.2: USB disconnect, device number 17 DISTRIB_ID=Ubuntu DISTRIB_RELEASE=22.04 DISTRIB_CODENAME=jammy DISTRIB_DESCRIPTION="Ubuntu 22.04.1 LTS" ProblemType: Bug DistroRelease: Ubuntu 22.04 Package: brltty 6.4-4ubuntu3 ProcVersionSignature: Ubuntu 5.15.0-47.51-generic 5.15.46 Uname: Linux 5.15.0-47-generic x86_64 ApportVersion: 2.20.11-0ubuntu82.1 Architecture: amd64 CasperMD5CheckResult: pass CurrentDesktop: MATE Date: Mon Sep 19 12:01:21 2022 InstallationDate: Installed on 2022-08-23 (27 days ago) InstallationMedia: Ubuntu-MATE 22.04.1 LTS "Jammy Jellyfish" - Release amd64 (20220809.1) ProcEnviron: LANGUAGE=en_US PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: brltty UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/brltty/+bug/1990189/+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
