Ironically, I have the same symptom, but it is solved if I apt-get remove brltty. With brltty:
[ 7760.720000] usb 2-1: new full speed USB device using uhci_hcd and address 7 [ 7760.900000] usb 2-1: configuration #1 chosen from 1 choice [ 7760.904000] ftdi_sio 2-1:1.0: FTDI USB Serial Device converter detected [ 7760.904000] drivers/usb/serial/ftdi_sio.c: Detected FT232BM [ 7760.904000] usb 2-1: FTDI USB Serial Device converter now attached to ttyUSB0 [ 7764.924000] usb 2-1: usbfs: interface 0 claimed by ftdi_sio while 'brltty' sets config #1 [ 7764.928000] ftdi_sio ttyUSB0: FTDI USB Serial Device converter now disconnected from ttyUSB0 [ 7764.928000] ftdi_sio 2-1:1.0: device disconnected [ 7784.480000] usb 2-1: USB disconnect, address 7 (The last message is when I actually removed the USB cable, which shows that it disconnects the ftdi_sio device on its own) Without it: [78258.424000] usb 2-2: new full speed USB device using uhci_hcd and address 8 [78258.604000] usb 2-2: configuration #1 chosen from 1 choice [78258.608000] ftdi_sio 2-2:1.0: FTDI USB Serial Device converter detected [78258.608000] drivers/usb/serial/ftdi_sio.c: Detected FT232BM [78258.608000] usb 2-2: FTDI USB Serial Device converter now attached to ttyUSB0 Is this not a brltty bug? -- FTDI USB Serial Device converter disconnects https://bugs.launchpad.net/bugs/122834 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
