Ubuntu 14.04 закрыла все программы и заблокировала

Я использую Ubuntu 14.04. При запущении программы Ubuntu автоматически закрыла все мои под управлением программы и заблокировала систему. Как зафиксировать это? Помогите.

Править: Когда я работаю tail -f /var/log/syslog, Мне показывают это:

May 26 08:24:40 kanat kernel: [ 9385.350407] usb 2-1.1: USB disconnect, device number 13
May 26 08:24:40 kanat kernel: [ 9386.061840] usb 2-1.1: new full-speed USB device number 14 using ehci-pci
May 26 08:24:40 kanat kernel: [ 9386.157134] usb 2-1.1: New USB device found, idVendor=1d57, idProduct=fa60
May 26 08:24:40 kanat kernel: [ 9386.157141] usb 2-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
May 26 08:24:40 kanat kernel: [ 9386.157145] usb 2-1.1: Product: 2.4G Receiver
May 26 08:24:40 kanat kernel: [ 9386.157148] usb 2-1.1: Manufacturer: Compx
May 26 08:24:40 kanat kernel: [ 9386.159494] input: Compx 2.4G Receiver as /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.1/2-1.1:1.0/0003:1D57:FA60.6A2D/input/input27191
May 26 08:24:40 kanat kernel: [ 9386.214484] hid-generic 0003:1D57:FA60.6A2D: input,hidraw0: USB HID v1.00 Keyboard [Compx 2.4G Receiver] on usb-0000:00:1d.0-1.1/input0
May 26 08:24:40 kanat kernel: [ 9386.216149] input: Compx 2.4G Receiver as /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.1/2-1.1:1.1/0003:1D57:FA60.6A2E/input/input27192
May 26 08:24:40 kanat kernel: [ 9386.216427] hid-generic 0003:1D57:FA60.6A2E: input,hidraw1: USB HID v1.00 Mouse [Compx 2.4G Receiver] on usb-0000:00:1d.0-1.1/input1
May 26 08:24:40 kanat kernel: [ 9386.218489] input: Compx 2.4G Receiver as /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.1/2-1.1:1.2/0003:1D57:FA60.6A2F/input/input27193
May 26 08:24:41 kanat kernel: [ 9386.326299] hid-generic 0003:1D57:FA60.6A2F: input,hidraw2: USB HID v1.00 Device [Compx 2.4G Receiver] on usb-0000:00:1d.0-1.1/input2