Public bug reported:
Full description is posted in this AskUbuntu question:
https://askubuntu.com/q/1336575/625814
I've got a new notebook HP Omen 15, manufactured in 2020. I has
Calculator key, this key is actual normal media key.
Pressing on it launches calculator only once, after the OS is booted. No
reaction for other presses.
If I run xev and press Calculator I see insanely many messages about
pressing and releasing XF86Calculator key:
...
KeyRelease event, serial 42, synthetic NO, window 0x3e00001,
root 0x29e, subw 0x0, time 52918, (151,-96), root:(151,806),
state 0x14, keycode 148 (keysym 0x1008ff1d, XF86Calculator), same_screen YES,
XLookupString gives 0 bytes:
XFilterEvent returns: False
KeyPress event, serial 42, synthetic NO, window 0x3e00001,
root 0x29e, subw 0x0, time 52918, (151,-96), root:(151,806),
state 0x14, keycode 148 (keysym 0x1008ff1d, XF86Calculator), same_screen YES,
XLookupString gives 0 bytes:
XmbLookupString gives 0 bytes:
XFilterEvent returns: False
KeyRelease event, serial 42, synthetic NO, window 0x3e00001,
root 0x29e, subw 0x0, time 52958, (151,-96), root:(151,806),
state 0x14, keycode 148 (keysym 0x1008ff1d, XF86Calculator), same_screen YES,
XLookupString gives 0 bytes:
XFilterEvent returns: False
KeyPress event, serial 42, synthetic NO, window 0x3e00001,
root 0x29e, subw 0x0, time 52958, (151,-96), root:(151,806),
state 0x14, keycode 148 (keysym 0x1008ff1d, XF86Calculator), same_screen YES,
XLookupString gives 0 bytes:
XmbLookupString gives 0 bytes:
XFilterEvent returns: False
KeyRelease event, serial 42, synthetic NO, window 0x3e00001,
root 0x29e, subw 0x0, time 52999, (151,-96), root:(151,806),
state 0x14, keycode 148 (keysym 0x1008ff1d, XF86Calculator), same_screen YES,
XLookupString gives 0 bytes:
XFilterEvent returns: False
...
If I run showkey, it always shows scan codes and key codes for that key:
$ sudo showkey -s
kb mode was ?UNKNOWN?
[ if you are trying this under X, it might not work
since the X server is also reading /dev/console ]
press any key (program terminates 10s after last keypress)...
0x9c
0xe0 0x21
0x1d
^Ccaught signal 2, cleaning up...
0xe0 0x21
$ sudo showkey -k
kb mode was ?UNKNOWN?
[ if you are trying this under X, it might not work
since the X server is also reading /dev/console ]
press any key (program terminates 10s after last keypress)...
keycode 28 release
keycode 140 press
keycode 29 press
^Ccaught signal 2, cleaning up...
Debugging with evtest shows that this key doesn't generate any events,
while some other keys do:
sudo evtest
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: HP WMI hotkeys
/dev/input/event6: HDA NVidia HDMI/DP,pcm=3
/dev/input/event7: SONiX USB Keyboard
/dev/input/event8: SONiX USB Keyboard Consumer Control
/dev/input/event9: SONiX USB Keyboard System Control
/dev/input/event10: PixArt Dell MS116 USB Optical Mouse
/dev/input/event11: HDA NVidia HDMI/DP,pcm=7
/dev/input/event12: HDA NVidia HDMI/DP,pcm=8
/dev/input/event13: HDA NVidia HDMI/DP,pcm=9
/dev/input/event14: HDA NVidia HDMI/DP,pcm=10
/dev/input/event15: HDA NVidia HDMI/DP,pcm=11
/dev/input/event16: SYNA32A5:00 06CB:CE17 Mouse
/dev/input/event17: SYNA32A5:00 06CB:CE17 Touchpad
/dev/input/event18: HD-Audio Generic Mic
/dev/input/event19: HD-Audio Generic Headphone
/dev/input/event20: HP Wide Vision HD Camera: HP Wi
/dev/input/event21: WI-XB400 (AVRCP)
Select the device event number [0-21]: 5
Input driver version is 1.0.1
Input device ID: bus 0x19 vendor 0x0 product 0x0 version 0x0
Input device name: "HP WMI hotkeys"
Supported events:
Event type 0 (EV_SYN)
Event type 1 (EV_KEY)
Event code 138 (KEY_HELP)
Event code 141 (KEY_SETUP)
Event code 148 (KEY_PROG1)
Event code 153 (KEY_DIRECTION)
Event code 184 (KEY_F14)
Event code 185 (KEY_F15)
Event code 186 (KEY_F16)
Event code 187 (KEY_F17)
Event code 224 (KEY_BRIGHTNESSDOWN)
Event code 225 (KEY_BRIGHTNESSUP)
Event code 226 (KEY_MEDIA)
Event code 240 (KEY_UNKNOWN)
Event code 358 (KEY_INFO)
Event type 4 (EV_MSC)
Event code 4 (MSC_SCAN)
Event type 5 (EV_SW)
Event code 1 (SW_TABLET_MODE) state 0
Event code 5 (SW_DOCK) state 0
Properties:
Testing ... (interrupt to exit)
Event: time 1621804159.221294, type 4 (EV_MSC), code 4 (MSC_SCAN), value 21a7
Event: time 1621804159.221294, type 1 (EV_KEY), code 186 (KEY_F16), value 1
Event: time 1621804159.221294, -------------- SYN_REPORT ------------
Event: time 1621804159.221328, type 1 (EV_KEY), code 186 (KEY_F16), value 0
Event: time 1621804159.221328, -------------- SYN_REPORT ------------
Event: time 1621804168.961868, type 4 (EV_MSC), code 4 (MSC_SCAN), value 21a5
Event: time 1621804168.961868, type 1 (EV_KEY), code 185 (KEY_F15), value 1
Event: time 1621804168.961868, -------------- SYN_REPORT ------------
Event: time 1621804168.961910, type 1 (EV_KEY), code 185 (KEY_F15), value 0
Event: time 1621804168.961910, -------------- SYN_REPORT ------------
Event: time 1621804176.067436, type 4 (EV_MSC), code 4 (MSC_SCAN), value 21a4
Event: time 1621804176.067436, type 1 (EV_KEY), code 184 (KEY_F14), value 1
Event: time 1621804176.067436, -------------- SYN_REPORT ------------
Event: time 1621804176.067460, type 1 (EV_KEY), code 184 (KEY_F14), value 0
Event: time 1621804176.067460, -------------- SYN_REPORT ------------
Event: time 1621804177.250432, type 4 (EV_MSC), code 4 (MSC_SCAN), value 21a9
Event: time 1621804177.250432, type 1 (EV_KEY), code 187 (KEY_F17), value 1
Event: time 1621804177.250432, -------------- SYN_REPORT ------------
Event: time 1621804177.250455, type 1 (EV_KEY), code 187 (KEY_F17), value 0
Event: time 1621804177.250455, -------------- SYN_REPORT ------------
** Affects: systemd (Ubuntu)
Importance: Undecided
Status: New
** Tags: hotkeys
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https://bugs.launchpad.net/bugs/1929345
Title:
Pressing calculator key generates infinitely many key-press key-
release events
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