Bug 515758 - [BUG] Keyboards With no Numlock have strange behaviour when using numpad
Summary: [BUG] Keyboards With no Numlock have strange behaviour when using numpad
Status: NEEDSINFO WAITINGFORINFO
Alias: None
Product: plasmashell
Classification: Plasma
Component: general (other bugs)
Version First Reported In: 6.5.4
Platform: Arch Linux Linux
: NOR normal
Target Milestone: 1.0
Assignee: Plasma Bugs List
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2026-02-09 09:18 UTC by Muhammad
Modified: 2026-02-09 21:56 UTC (History)
3 users (show)

See Also:
Latest Commit:
Version Fixed/Implemented In:
Sentry Crash Report:


Attachments
my keyboard (37.63 KB, image/jpeg)
2026-02-09 09:18 UTC, Muhammad
Details

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Description Muhammad 2026-02-09 09:18:21 UTC
Created attachment 189380 [details]
my keyboard

SUMMARY
My keyboard has no numlock and has numpad which means numlock is always active (supposed)
I tried many things, in plasma settings and keeping numlock always on, I used initramfs numlock on method, however no luck

the keyboard is acting as numlock is off on first key press writing the strange ^[[B  and like that combination if in terminal or triggering actions if in other application (up down home ... etc.) 

the problem is that happen periodically ex. every couple of minutes first keypress in numpad will be having the same problem and this is happening only in plasma, i tried cinnamon and gnome all working normally


I have dell multimedia keyboard in the image attached

I have this log it can be helpful, look in the last part first time it wrote ^[[B and the second time wrote 2 at the beginning of line, what i understood is that the keyboard is sending numlock keypress after the first keypress or am I wrong? just observation

sudo evtest /dev/input/event4  
Input driver version is 1.0.1
Input device ID: bus 0x3 vendor 0x413c product 0x2112 version 0x110
Input device name: "DELL Dell USB Wired Multimedia 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 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 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 129 (KEY_AGAIN)
    Event code 130 (KEY_PROPS)
    Event code 131 (KEY_UNDO)
    Event code 132 (KEY_FRONT)
    Event code 133 (KEY_COPY)
    Event code 134 (KEY_OPEN)
    Event code 135 (KEY_PASTE)
    Event code 136 (KEY_FIND)
    Event code 137 (KEY_CUT)
    Event code 138 (KEY_HELP)
    Event code 140 (KEY_CALC)
    Event code 142 (KEY_SLEEP)
    Event code 150 (KEY_WWW)
    Event code 152 (KEY_SCREENLOCK)
    Event code 158 (KEY_BACK)
    Event code 159 (KEY_FORWARD)
    Event code 161 (KEY_EJECTCD)
    Event code 163 (KEY_NEXTSONG)
    Event code 164 (KEY_PLAYPAUSE)
    Event code 165 (KEY_PREVIOUSSONG)
    Event code 166 (KEY_STOPCD)
    Event code 173 (KEY_REFRESH)
    Event code 176 (KEY_EDIT)
    Event code 177 (KEY_SCROLLUP)
    Event code 178 (KEY_SCROLLDOWN)
    Event code 179 (KEY_KPLEFTPAREN)
    Event code 180 (KEY_KPRIGHTPAREN)
    Event code 183 (KEY_F13)
    Event code 184 (KEY_F14)
    Event code 185 (KEY_F15)
    Event code 186 (KEY_F16)
    Event code 187 (KEY_F17)
    Event code 188 (KEY_F18)
    Event code 189 (KEY_F19)
    Event code 190 (KEY_F20)
    Event code 191 (KEY_F21)
    Event code 192 (KEY_F22)
    Event code 193 (KEY_F23)
    Event code 194 (KEY_F24)
    Event code 240 (KEY_UNKNOWN)
  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
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 1767730521.794130, type 17 (EV_LED), code 0 (LED_NUML), value 0
Event: time 1767730521.794130, type 4 (EV_MSC), code 4 (MSC_SCAN), value 70058
Event: time 1767730521.794130, type 1 (EV_KEY), code 96 (KEY_KPENTER), value 0
Event: time 1767730521.794130, -------------- SYN_REPORT ------------
Event: time 1767730564.122630, type 4 (EV_MSC), code 4 (MSC_SCAN), value 70053
Event: time 1767730564.122630, type 1 (EV_KEY), code 69 (KEY_NUMLOCK), value 1
Event: time 1767730564.122630, -------------- SYN_REPORT ------------
Event: time 1767730564.130439, type 4 (EV_MSC), code 4 (MSC_SCAN), value 70053
Event: time 1767730564.130439, type 1 (EV_KEY), code 69 (KEY_NUMLOCK), value 0
Event: time 1767730564.130439, type 4 (EV_MSC), code 4 (MSC_SCAN), value 7005a
Event: time 1767730564.130439, type 1 (EV_KEY), code 80 (KEY_KP2), value 1
Event: time 1767730564.130439, -------------- SYN_REPORT ------------
^[[BEvent: time 1767730564.210366, type 4 (EV_MSC), code 4 (MSC_SCAN), value 7005a
Event: time 1767730564.210366, type 1 (EV_KEY), code 80 (KEY_KP2), value 0
Event: time 1767730564.210366, -------------- SYN_REPORT ------------
Event: time 1767730569.530687, type 4 (EV_MSC), code 4 (MSC_SCAN), value 70053
Event: time 1767730569.530687, type 1 (EV_KEY), code 69 (KEY_NUMLOCK), value 1
Event: time 1767730569.530687, -------------- SYN_REPORT ------------
Event: time 1767730569.530994, type 17 (EV_LED), code 0 (LED_NUML), value 1
Event: time 1767730569.530994, -------------- SYN_REPORT ------------
Event: time 1767730569.538485, type 4 (EV_MSC), code 4 (MSC_SCAN), value 70053
Event: time 1767730569.538485, type 1 (EV_KEY), code 69 (KEY_NUMLOCK), value 0
Event: time 1767730569.538485, type 4 (EV_MSC), code 4 (MSC_SCAN), value 7005a
Event: time 1767730569.538485, type 1 (EV_KEY), code 80 (KEY_KP2), value 1
Event: time 1767730569.538485, -------------- SYN_REPORT ------------
2Event: time 1767730569.610503, type 4 (EV_MSC), code 4 (MSC_SCAN), value 7005a
Event: time 1767730569.610503, type 1 (EV_KEY), code 80 (KEY_KP2), value 0
Event: time 1767730569.610503, -------------- SYN_REPORT ------------


SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Arch 6.18
KDE Plasma Version: 6.5.4
KDE Frameworks Version: 6.21.0
Qt Version: 6.10.1
Comment 1 Tobias Fella 2026-02-09 14:04:00 UTC
Is that with x11 or wayland?
Comment 2 Muhammad 2026-02-09 21:56:31 UTC
(In reply to Tobias Fella from comment #1)
> Is that with x11 or wayland?

Currently using Plasma in Wayland