No device specified, trying to scan all of /dev/input/event* Available devices: /dev/input/event0: Power Button /dev/input/event1: Lid Switch /dev/input/event2: Power Button /dev/input/event3: AT Translated Set 2 keyboard /dev/input/event4: Video Bus /dev/input/event5: Video Bus /dev/input/event6: Logitech M705 /dev/input/event7: SynPS/2 Synaptics TouchPad /dev/input/event8: Logitech Performance MX /dev/input/event9: Laptop_Integrated_Webcam_1.3M /dev/input/event10: HDA Intel PCH Mic /dev/input/event11: HDA Intel PCH Front Headphone /dev/input/event12: HDA Intel PCH Front Headphone /dev/input/event13: HDA Intel PCH HDMI/DP,pcm=3 Select the device event number [0-13]: 5 Input driver version is 1.0.1 Input device ID: bus 0x19 vendor 0x0 product 0x6 version 0x0 Input device name: "Video Bus" Supported events: Event type 0 (EV_SYN) Event type 1 (EV_KEY) Event code 224 (KEY_BRIGHTNESSDOWN) Event code 225 (KEY_BRIGHTNESSUP) Event code 227 (KEY_SWITCHVIDEOMODE) Event code 241 (KEY_VIDEO_NEXT) Event code 242 (KEY_VIDEO_PREV) Event code 243 (KEY_BRIGHTNESS_CYCLE) Event code 244 (KEY_BRIGHTNESS_ZERO) Event code 245 (KEY_DISPLAY_OFF) Properties: Testing ... (interrupt to exit) Event: time 1475611180.552974, type 1 (EV_KEY), code 225 (KEY_BRIGHTNESSUP), value 1 Event: time 1475611180.552974, -------------- SYN_REPORT ------------ Event: time 1475611180.553046, type 1 (EV_KEY), code 225 (KEY_BRIGHTNESSUP), value 0 Event: time 1475611180.553046, -------------- SYN_REPORT -----