kernel-packages team mailing list archive

[Launchpad Bug Tracker <1527491@xxxxxxxxxxxxxxxxxx>]

You have been subscribed to a public bug:

USB serial adapter detected but not working.

$ lsusb
Bus 001 Device 125: ID 1a86:7523 QinHeng Electronics HL-340 USB-Serial adapter


$ ls /dev/ttyU*
/dev/ttyUSB0

>From syslog
Dec 18 09:35:23 pieter-ThinkPad kernel: [487228.018937] usb 1-1: new full-speed USB device number 126 using xhci_hcd
Dec 18 09:35:23 pieter-ThinkPad kernel: [487228.183954] usb 1-1: New USB device found, idVendor=1a86, idProduct=7523
Dec 18 09:35:23 pieter-ThinkPad kernel: [487228.183959] usb 1-1: New USB device strings: Mfr=0, Product=2, SerialNumber=0
Dec 18 09:35:23 pieter-ThinkPad kernel: [487228.183962] usb 1-1: Product: USB2.0-Ser!
Dec 18 09:35:23 pieter-ThinkPad kernel: [487228.184731] ch341 1-1:1.0: ch341-uart converter detected
Dec 18 09:35:23 pieter-ThinkPad kernel: [487228.185569] usb 1-1: ch341-uart converter now attached to ttyUSB0
Dec 18 09:35:23 pieter-ThinkPad mtp-probe: checking bus 1, device 126: "/sys/devices/pci0000:00/0000:00:14.0/usb1/1-1"
Dec 18 09:35:23 pieter-ThinkPad mtp-probe: bus: 1, device: 126 was not an MTP device


$ uname -a
Linux pieter-ThinkPad 4.3.0-040300-lowlatency #201511020949 SMP PREEMPT Mon Nov 2 14:55:33 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux


Google search
http://comments.gmane.org/gmane.linux.usb.general/121851
https://bugzilla.redhat.com/show_bug.cgi?id=1235715
http://unix.stackexchange.com/questions/189896/testing-if-hl-340-works

** Affects: linux-meta (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: serial usb
-- 
QinHeng Electronics HL-340 USB-Serial adapter
https://bugs.launchpad.net/bugs/1527491
You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-meta in Ubuntu.