Comment 9 for bug 1852071

Hi @kai.heng.feng

No problem.

I tested "event04", logs below:

$ sudo evtest
No device specified, trying to scan all of /dev/input/event*
Available devices:
/dev/input/event0: Sleep Button
/dev/input/event1: Lid Switch
/dev/input/event2: Power Button
/dev/input/event3: Power Button
/dev/input/event4: AT Translated Set 2 keyboard
/dev/input/event5: Video Bus
/dev/input/event6: SynPS/2 Synaptics TouchPad
/dev/input/event11: HP Wireless hotkeys
/dev/input/event12: HP HD Camera: HP HD Camera
/dev/input/event13: HP HD Camera: HP IR Camera
/dev/input/event14: SYNA307B:00 06CB:CD46 Touchpad
/dev/input/event15: ST LIS3LV02DL Accelerometer
/dev/input/event16: HP WMI hotkeys
/dev/input/event17: HDA Intel PCH Mic
/dev/input/event18: HDA Intel PCH Headphone
/dev/input/event19: HDA Intel PCH HDMI/DP,pcm=3
/dev/input/event20: HDA Intel PCH HDMI/DP,pcm=7
/dev/input/event21: HDA Intel PCH HDMI/DP,pcm=8
/dev/input/event22: HDA Intel PCH HDMI/DP,pcm=9
/dev/input/event23: HDA Intel PCH HDMI/DP,pcm=10
/dev/input/event24: MX Master 3 Keyboard
/dev/input/event25: MX Master 3 Mouse
Select the device event number [0-25]: 4
Input driver version is 1.0.1
Input device ID: bus 0x11 vendor 0x1 product 0x1 version 0xab41
Input device name: "AT Translated Set 2 keyboard"
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 85 (KEY_ZENKAKUHANKAKU)
    Event code 86 (KEY_102ND)
    Event code 87 (KEY_F11)
    Event code 88 (KEY_F12)
    Event code 89 (KEY_RO)
    Event code 90 (KEY_KATAKANA)
    Event code 91 (KEY_HIRAGANA)
    Event code 92 (KEY_HENKAN)
    Event code 93 (KEY_KATAKANAHIRAGANA)
    Event code 94 (KEY_MUHENKAN)
    Event code 95 (KEY_KPJPCOMMA)
    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 112 (KEY_MACRO)
    Event code 113 (KEY_MUTE)
    Event code 114 (KEY_VOLUMEDOWN)
    Event code 115 (KEY_VOLUMEUP)
    Event code 116 (KEY_POWER)
    Event code 117 (KEY_KPEQUAL)
    Event code 118 (KEY_KPPLUSMINUS)
    Event code 119 (KEY_PAUSE)
    Event code 121 (KEY_KPCOMMA)
    Event code 122 (KEY_HANGUEL)
    Event code 123 (KEY_HANJA)
    Event code 124 (KEY_YEN)
    Event code 125 (KEY_LEFTMETA)
    Event code 126 (KEY_RIGHTMETA)
    Event code 127 (KEY_COMPOSE)
    Event code 128 (KEY_STOP)
    Event code 138 (KEY_HELP)
    Event code 140 (KEY_CALC)
    Event code 142 (KEY_SLEEP)
    Event code 143 (KEY_WAKEUP)
    Event code 152 (KEY_SCREENLOCK)
    Event code 155 (KEY_MAIL)
    Event code 156 (KEY_BOOKMARKS)
    Event code 157 (KEY_COMPUTER)
    Event code 158 (KEY_BACK)
    Event code 159 (KEY_FORWARD)
    Event code 163 (KEY_NEXTSONG)
    Event code 164 (KEY_PLAYPAUSE)
    Event code 165 (KEY_PREVIOUSSONG)
    Event code 166 (KEY_STOPCD)
    Event code 172 (KEY_HOMEPAGE)
    Event code 173 (KEY_REFRESH)
    Event code 183 (KEY_F13)
    Event code 184 (KEY_F14)
    Event code 185 (KEY_F15)
    Event code 190 (KEY_F20)
    Event code 212 (KEY_CAMERA)
    Event code 217 (KEY_SEARCH)
    Event code 224 (KEY_BRIGHTNESSDOWN)
    Event code 225 (KEY_BRIGHTNESSUP)
    Event code 226 (KEY_MEDIA)
    Event code 227 (KEY_SWITCHVIDEOMODE)
    Event code 236 (KEY_BATTERY)
    Event code 238 (KEY_WLAN)
    Event code 240 (KEY_UNKNOWN)
    Event code 389 (KEY_DVD)
  Event type 4 (EV_MSC)
    Event code 4 (MSC_SCAN)
  Event type 17 (EV_LED)
    Event code 0 (LED_NUML) state 0
    Event code 1 (LED_CAPSL) state 0
    Event code 2 (LED_SCROLLL) 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)

// Fn + F3 (brightness down)

Event: time 1580803178.157413, type 4 (EV_MSC), code 4 (MSC_SCAN), value 81
Event: time 1580803178.157413, type 1 (EV_KEY), code 190 (KEY_F20), value 1
Event: time 1580803178.157413, -------------- SYN_REPORT ------------
Event: time 1580803178.164110, type 4 (EV_MSC), code 4 (MSC_SCAN), value 81
Event: time 1580803178.164110, type 1 (EV_KEY), code 190 (KEY_F20), value 0
Event: time 1580803178.164110, -------------- SYN_REPORT ------------

// Fn + F4 (brightness up)

Event: time 1580803183.243848, type 4 (EV_MSC), code 4 (MSC_SCAN), value 81
Event: time 1580803183.243848, type 1 (EV_KEY), code 190 (KEY_F20), value 1
Event: time 1580803183.243848, -------------- SYN_REPORT ------------
Event: time 1580803183.250867, type 4 (EV_MSC), code 4 (MSC_SCAN), value 81
Event: time 1580803183.250867, type 1 (EV_KEY), code 190 (KEY_F20), value 0
Event: time 1580803183.250867, -------------- SYN_REPORT ------------

// Fn + F8 (mic mute)

Event: time 1580803201.170257, type 4 (EV_MSC), code 4 (MSC_SCAN), value 81
Event: time 1580803201.170257, type 1 (EV_KEY), code 190 (KEY_F20), value 1
Event: time 1580803201.170257, -------------- SYN_REPORT ------------
Event: time 1580803201.176968, type 4 (EV_MSC), code 4 (MSC_SCAN), value 81
Event: time 1580803201.176968, type 1 (EV_KEY), code 190 (KEY_F20), value 0
Event: time 1580803201.176968, -------------- SYN_REPORT ------------
Event: time 1580803201.201108, type 4 (EV_MSC), code 4 (MSC_SCAN), value 42
Event: time 1580803201.201108, -------------- SYN_REPORT ------------