FTDI Device Not Working Ubuntu 14.04.2 LTS

My SDR-IQ has an FTDI chip and worked before a dist-upgrade.

Now, I can not access the device with the C application, which worked before.

I can access the device with VirtualBox and XP.

> lsusb
Bus 002 Device 004: ID 0cf3:3005 Atheros Communications, Inc. AR3011 Bluetooth
Bus 002 Device 008: ID 0403:6001 Future Technology Devices International, Ltd FT232 USB-Serial (UART) IC
Bus 002 Device 006: ID 045e:0768 Microsoft Corp. Sidewinder X4
Bus 002 Device 005: ID 045e:00cb Microsoft Corp. Basic Optical Mouse v2.0
Bus 002 Device 003: ID 050d:0237 Belkin Components F5U237 USB 2.0 7-Port Hub
Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 006 Device 002: ID 2109:0810
Bus 006 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 005 Device 002: ID 2109:3431
Bus 005 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

I disconnected and reconnected the device.

> tail /var/log/syslog
Jun 24 10:53:22 P9X79 kernel: [ 215.206479] usb 2-1.2.7: USB disconnect, device number 7
Jun 24 10:53:22 P9X79 kernel: [ 215.206701] ftdi_sio ttyUSB0: FTDI USB Serial Device converter now disconnected from ttyUSB0
Jun 24 10:53:22 P9X79 kernel: [ 215.206722] ftdi_sio 2-1.2.7:1.0: device disconnected

Jun 24 10:53:25 P9X79 kernel: [ 218.217501] usb 2-1.2.7: new full-speed USB device number 8 using ehci-pci
Jun 24 10:53:25 P9X79 kernel: [ 218.313692] usb 2-1.2.7: New USB device found, idVendor=0403, idProduct=6001
Jun 24 10:53:25 P9X79 kernel: [ 218.313697] usb 2-1.2.7: New USB device strings: Mfr=1, Product=2, SerialNumber=0
Jun 24 10:53:25 P9X79 kernel: [ 218.313700] usb 2-1.2.7: Product: SDR-IQ
Jun 24 10:53:25 P9X79 kernel: [ 218.313703] usb 2-1.2.7: Manufacturer: FTDI
Jun 24 10:53:25 P9X79 kernel: [ 218.315201] ftdi_sio 2-1.2.7:1.0: FTDI USB Serial Device converter detected
Jun 24 10:53:25 P9X79 kernel: [ 218.315232] usb 2-1.2.7: Detected FT232RL
Jun 24 10:53:25 P9X79 kernel: [ 218.315234] usb 2-1.2.7: Number of endpoints 2
Jun 24 10:53:25 P9X79 kernel: [ 218.315237] usb 2-1.2.7: Endpoint 1 MaxPacketSize 64
Jun 24 10:53:25 P9X79 kernel: [ 218.315239] usb 2-1.2.7: Endpoint 2 MaxPacketSize 64
Jun 24 10:53:25 P9X79 kernel: [ 218.315242] usb 2-1.2.7: Setting MaxPacketSize 64
Jun 24 10:53:25 P9X79 kernel: [ 218.315603] usb 2-1.2.7: FTDI USB Serial Device converter now attached to ttyUSB0
Jun 24 10:53:25 P9X79 mtp-probe: checking bus 2, device 8: "/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.2/2-1.2.7"
Jun 24 10:53:25 P9X79 mtp-probe: bus: 2, device: 8 was not an MTP device

dmesg | > tail

[ 218.217501] usb 2-1.2.7: new full-speed USB device number 8 using ehci-pci
[ 218.313692] usb 2-1.2.7: New USB device found, idVendor=0403, idProduct=6001
[ 218.313697] usb 2-1.2.7: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 218.313700] usb 2-1.2.7: Product: SDR-IQ
[ 218.313703] usb 2-1.2.7: Manufacturer: FTDI
[ 218.315201] ftdi_sio 2-1.2.7:1.0: FTDI USB Serial Device converter detected
[ 218.315232] usb 2-1.2.7: Detected FT232RL
[ 218.315234] usb 2-1.2.7: Number of endpoints 2
[ 218.315237] usb 2-1.2.7: Endpoint 1 MaxPacketSize 64
[ 218.315239] usb 2-1.2.7: Endpoint 2 MaxPacketSize 64
[ 218.315242] usb 2-1.2.7: Setting MaxPacketSize 64
[ 218.315603] usb 2-1.2.7: FTDI USB Serial Device converter now attached to ttyUSB0

I have removed brltty.

Tom Dean