Module ch341 still defect on kernel 4.9 . In my case, the correction proposed in #9 works (thanks to the author).
Tips: How to build module without the entire kernel # cd drivers/usb/serial # make -C /lib/modules/$(uname -r)/build M=$(pwd) modules -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1527491 Title: QinHeng Electronics HL-340 USB-Serial adapter Status in linux package in Ubuntu: Confirmed Bug description: 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 --- ApportVersion: 2.19.1-0ubuntu5 Architecture: amd64 CurrentDesktop: Unity DistroRelease: Ubuntu 15.10 InstallationDate: Installed on 2015-01-23 (331 days ago) InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2) Package: linux (not installed) Tags: wily Uname: Linux 4.3.0-040300-lowlatency x86_64 UnreportableReason: The running kernel is not an Ubuntu kernel UpgradeStatus: Upgraded to wily on 2015-11-11 (39 days ago) UserGroups: adm btsync cdrom dialout dip kismet kvm libvirtd lpadmin plugdev sambashare sudo wireshark _MarkForUpload: True To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1527491/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
