Custom HID Keyboard Not Working In Ubuntu

I have implemented a test HID keyboard using an STM32 microcontroller. Nothing fanct, just sends continous stream of 'A' once connected at the speed of 10/sec. Works just fine in windows. But when connected to my Ubuntu 16 machine, nothing shows up even though it gets recognized properly and I see no errors with dmesg dmesg log: [ +9.163248] usb 2-1.1.2: new full-speed USB device number 34 using ehci-pci [ +0.110516] usb 2-1.1.2: New USB device found, idVendor=0483, idProduct=5710 [ +0.000005] usb 2-1.1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ +0.000003] usb 2-1.1.2: Product: Root Password Unlock Key [ +0.000002] usb 2-1.1.2: Manufacturer: Nomadic Controls [ +0.000002] usb 2-1.1.2: SerialNumber: 123456789 [ +0.002741] input: Nomadic Controls Root Password Unlock Key as /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.1/2-1.1.2/2-1.1.2:1.0/0003:0483:5710.0012/input/input39 [ +0.059560] hid-generic 0003:0483:5710.0012: input,hidraw2: USB HID v1.00 Keyboard [Nomadic Controls Root Password Unlock Key] on usb-0000:00:1d.0-1.1.2/input0 I tested with evtest and I see that the data is coming in fine, just not getting displayed on screen for some reason evtest log Input device ID: bus 0x3 vendor 0x483 product 0x5710 version 0x100 Input device name: "Nomadic Controls Root Password Unlock Key" Supported events: Event type 0 (EV_SYN) Event type 1 (EV_KEY) Event code 1 (KEY_ESC) Event code 2 (KEY_1) Event code 3 (KEY_2) Event code 4 (KEY_3) Event code 5 (KEY_4) Event code 6 (KEY_5) Event code 7 (KEY_6) Event code 8 (KEY_7) Event code 9 (KEY_8) Event code 10 (KEY_9) Event code 11 (KEY_0) Event code 12 (KEY_MINUS) Event code 13 (KEY_EQUAL) Event code 14 (KEY_BACKSPACE) Event code 15 (KEY_TAB) Event code 16 (KEY_Q) Event code 17 (KEY_W) Event code 18 (KEY_E) Event code 19 (KEY_R) Event code 20 (KEY_T) Event code 21 (KEY_Y) Event code 22 (KEY_U) Event code 23 (KEY_I) Event code 24 (KEY_O) Event code 25 (KEY_P) Event code 26 (KEY_LEFTBRACE) Event code 27 (KEY_RIGHTBRACE) Event code 28 (KEY_ENTER) Event code 29 (KEY_LEFTCTRL) Event code 30 (KEY_A) Event code 31 (KEY_S) Event code 32 (KEY_D) Event code 33 (KEY_F) Event code 34 (KEY_G) Event code 35 (KEY_H) Event code 36 (KEY_J) Event code 37 (KEY_K) Event code 38 (KEY_L) Event code 39 (KEY_SEMICOLON) Event code 40 (KEY_APOSTROPHE) Event code 41 (KEY_GRAVE) Event code 42 (KEY_LEFTSHIFT) Event code 43 (KEY_BACKSLASH) Event code 44 (KEY_Z) Event code 45 (KEY_X) Event code 46 (KEY_C) Event code 47 (KEY_V) Event code 48 (KEY_B) Event code 49 (KEY_N) Event code 50 (KEY_M) Event code 51 (KEY_COMMA) Event code 52 (KEY_DOT) Event code 53 (KEY_SLASH) Event code 54 (KEY_RIGHTSHIFT) Event code 55 (KEY_KPASTERISK) Event code 56 (KEY_LEFTALT) Event code 57 (KEY_SPACE) Event code 58 (KEY_CAPSLOCK) Event code 59 (KEY_F1) Event code 60 (KEY_F2) Event code 61 (KEY_F3) Event code 62 (KEY_F4) Event code 63 (KEY_F5) Event code 64 (KEY_F6) Event code 65 (KEY_F7) Event code 66 (KEY_F8) Event code 67 (KEY_F9) Event code 68 (KEY_F10) Event code 69 (KEY_NUMLOCK) Event code 70 (KEY_SCROLLLOCK) Event code 71 (KEY_KP7) Event code 72 (KEY_KP8) Event code 73 (KEY_KP9) Event code 74 (KEY_KPMINUS) Event code 75 (KEY_KP4) Event code 76 (KEY_KP5) Event code 77 (KEY_KP6) Event code 78 (KEY_KPPLUS) Event code 79 (KEY_KP1) Event code 80 (KEY_KP2) Event code 81 (KEY_KP3) Event code 82 (KEY_KP0) Event code 83 (KEY_KPDOT) Event code 86 (KEY_102ND) Event code 87 (KEY_F11) Event code 88 (KEY_F12) Event code 96 (KEY_KPENTER) Event code 97 (KEY_RIGHTCTRL) Event code 98 (KEY_KPSLASH) Event code 99 (KEY_SYSRQ) Event code 100 (KEY_RIGHTALT) Event code 102 (KEY_HOME) Event code 103 (KEY_UP) Event code 104 (KEY_PAGEUP) Event code 105 (KEY_LEFT) Event code 106 (KEY_RIGHT) Event code 107 (KEY_END) Event code 108 (KEY_DOWN) Event code 109 (KEY_PAGEDOWN) Event code 110 (KEY_INSERT) Event code 111 (KEY_DELETE) Event code 119 (KEY_PAUSE) Event code 125 (KEY_LEFTMETA) Event code 126 (KEY_RIGHTMETA) Event code 127 (KEY_COMPOSE) Event type 4 (EV_MSC) Event code 4 (MSC_SCAN) Event type 17 (EV_LED) Event code 0 (LED_NUML) state 1 Event code 1 (LED_CAPSL) state 0 Event code 2 (LED_SCROLLL) state 0 Event code 3 (LED_COMPOSE) state 0 Event code 4 (LED_KANA) state 0 Key repeat handling: Repeat type 20 (EV_REP) Repeat code 0 (REP_DELAY) Value 250 Repeat code 1 (REP_PERIOD) Value 33 Properties: Testing ... (interrupt to exit) Event: time 1517685567.317551, type 1 (EV_KEY), code 30 (KEY_A), value 2 Event: time 1517685567.317551, -------------- SYN_REPORT ------------ Event: time 1517685567.357555, type 1 (EV_KEY), code 30 (KEY_A), value 2 Event: time 1517685567.357555, -------------- SYN_REPORT ------------ Event: time 1517685567.397568, type 1 (EV_KEY), code 30 (KEY_A), value 2 Event: time 1517685567.397568, -------------- SYN_REPORT ------------ Event: time 1517685567.421168, type 17 (EV_LED), code 0 (LED_NUML), value 0 Event: time 1517685567.421168, -------------- SYN_REPORT ------------ Event: time 1517685567.437542, type 1 (EV_KEY), code 30 (KEY_A), value 2 Event: time 1517685567.437542, -------------- SYN_REPORT ------------ Event: time 1517685567.477549, type 1 (EV_KEY), code 30 (KEY_A), value 2 Event: time 1517685567.477549, -------------- SYN_REPORT ------------ Event: time 1517685567.517555, type 1 (EV_KEY), code 30 (KEY_A), value 2 Event: time 1517685567.517555, -------------- SYN_REPORT ------------ Event: time 1517685567.557554, type 1 (EV_KEY), code 30 (KEY_A), value 2 Event: time 1517685567.557554, -------------- SYN_REPORT ------------ Event: time 1517685567.597552, type 1 (EV_KEY), code 30 (KEY_A), value 2 Event: time 1517685567.597552, -------------- SYN_REPORT ------------ Event: time 1517685567.637564, type 1 (EV_KEY), code 30 (KEY_A), value 2 Any idea what could be happening here?