26 Jan 2017; same problem from syslog
Jan 26 08:36:17 USSMLTRDLinux02 kernel: [259338.868105] usb 2-1.1: new full-speed USB device number 38 using ehci-pci Jan 26 08:36:17 USSMLTRDLinux02 kernel: [259338.961091] usb 2-1.1: New USB device found, idVendor=1a86, idProduct=7523 Jan 26 08:36:17 USSMLTRDLinux02 kernel: [259338.961097] usb 2-1.1: New USB device strings: Mfr=0, Product=2, SerialNumber=0 Jan 26 08:36:17 USSMLTRDLinux02 kernel: [259338.961099] usb 2-1.1: Product: USB2.0-Ser! Jan 26 08:36:17 USSMLTRDLinux02 kernel: [259338.961389] ch341 2-1.1:1.0: ch341-uart converter detected Jan 26 08:36:17 USSMLTRDLinux02 kernel: [259338.963275] usb 2-1.1: ch341-uart converter now attached to ttyUSB1 Jan 26 08:36:17 USSMLTRDLinux02 mtp-probe: checking bus 2, device 38: "/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.1" Jan 26 08:36:17 USSMLTRDLinux02 mtp-probe: bus: 2, device: 38 was not an MTP device $ uname -a Linux USSMLTRDLinux02 3.13.0-107-generic #154~precise1-Ubuntu SMP Tue Dec 20 10:37:27 UTC 2016 i686 i686 i386 GNU/Linux I do observe the associated access is ehci-pci, whereas the original post access was xhci_hcd Also I have some CH341 bases RS485 interfaces, they work just fine, same VID:PID. The device having problems is RS232. These have a driver CD for Windows, works fine there. sys;log for the RS485 device Jan 26 08:48:04 USSMLTRDLinux02 kernel: [260046.435291] usb 2-1.4: USB disconnect, device number 37 Jan 26 08:48:07 USSMLTRDLinux02 kernel: [260049.195120] usb 2-1.4: new full-speed USB device number 39 using ehci-pci Jan 26 08:48:07 USSMLTRDLinux02 kernel: [260049.288782] usb 2-1.4: New USB device found, idVendor=1a86, idProduct=7523 Jan 26 08:48:07 USSMLTRDLinux02 kernel: [260049.288788] usb 2-1.4: New USB device strings: Mfr=0, Product=2, SerialNumber=0 Jan 26 08:48:07 USSMLTRDLinux02 kernel: [260049.288791] usb 2-1.4: Product: USB2.0-Serial Jan 26 08:48:07 USSMLTRDLinux02 kernel: [260049.289149] ch341 2-1.4:1.0: ch341-uart converter detected Jan 26 08:48:07 USSMLTRDLinux02 kernel: [260049.291092] usb 2-1.4: ch341-uart converter now attached to ttyUSB2 Jan 26 08:48:07 USSMLTRDLinux02 mtp-probe: checking bus 2, device 39: "/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.4" Jan 26 08:48:07 USSMLTRDLinux02 mtp-probe: bus: 2, device: 39 was not an MTP device I note in RS232 description: Jan 26 08:36:17 USSMLTRDLinux02 kernel: [259338.961099] usb 2-1.1: Product: USB2.0-Ser! and in RS485 description: Jan 26 08:48:07 USSMLTRDLinux02 kernel: [260049.288791] usb 2-1.4: Product: USB2.0-Serial interesting how the description in syslog also corrupts -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1527491 Title: QinHeng Electronics HL-340 USB-Serial adapter To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1527491/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
