| 2022-09-21 16:03:19 |
Simon Chopin |
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) |
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.
Workaround: disable brltty
sudo systemctl stop brltty-udev.service
sudo systemctl mask brltty-udev.service
sudo systemctl stop brltty.service
sudo systemctl disable brltty.service
[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: BugDistroRelease: 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/bashSourcePackage: brltty
UpgradeStatus: No upgrade log present (probably fresh install) |
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