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#1 2024-06-03 18:20:59
- marmistrz
- Member
- Registered: 2016-01-05
- Posts: 129
[solved] Wacom pen stopped working: libinput events not always emitted
Hi,
I recently started having problems with my stylus. My hardware is Dell Latitude 7440 2-in-1, I'm using a Dell Premium Active Pen. The issue started occurring within the last week.
I tried to debug the issue using `libinput debug-events`.
When I move the stylus close to the touchscreen, I don't get the TABLET_TOOL_PROXIMITY events. Once I start drawing, no events are emitted and nothing is being drawn. Once I remove the stylus from the screen, the final part of the stroke is drawn at once and I obtain the following events:
-event11 TABLET_TOOL_PROXIMITY +0.000s 184.32*/51.75* tilt: 0.00*/0.00* pressure: 0.57* pen (0, id 0) proximity-in axes:pt btn:SS2
event11 TABLET_TOOL_TIP +0.000s 184.32/51.75 tilt: 0.00/0.00 pressure: 0.57 down
event11 TABLET_TOOL_AXIS +0.000s 184.50*/52.03* tilt: 0.00/0.00 pressure: 0.57
event11 TABLET_TOOL_AXIS +0.000s 184.94*/52.65* tilt: 0.00/0.00 pressure: 0.57
event11 TABLET_TOOL_AXIS +0.000s 185.62*/53.53* tilt: 0.00/0.00 pressure: 0.57
event11 TABLET_TOOL_AXIS +0.000s 186.53*/54.64* tilt: 0.00/0.00 pressure: 0.57
event11 TABLET_TOOL_AXIS +0.000s 187.63*/55.71* tilt: 0.00/0.00 pressure: 0.57
event11 TABLET_TOOL_AXIS +0.000s 188.79*/56.56* tilt: 0.00/0.00 pressure: 0.57
event11 TABLET_TOOL_AXIS +0.000s 190.07*/57.22* tilt: 0.00/0.00 pressure: 0.57
event11 TABLET_TOOL_AXIS +0.000s 191.63*/57.64* tilt: 0.00/0.00 pressure: 0.57
event11 TABLET_TOOL_AXIS +0.000s 193.28*/57.75* tilt: 0.00/0.00 pressure: 0.57
event11 TABLET_TOOL_AXIS +0.000s 195.13*/57.61* tilt: 0.00/0.00 pressure: 0.57
event11 TABLET_TOOL_AXIS +0.000s 197.30*/57.21* tilt: 0.00/0.00 pressure: 0.57
event11 TABLET_TOOL_AXIS +0.000s 199.53*/56.65* tilt: 0.00/0.00 pressure: 0.57
event11 TABLET_TOOL_AXIS +0.000s 201.92*/56.02* tilt: 0.00/0.00 pressure: 0.57
event11 TABLET_TOOL_AXIS +0.000s 204.49*/55.36* tilt: 0.00/0.00 pressure: 0.57
event11 TABLET_TOOL_AXIS +0.000s 206.95*/54.79* tilt: 0.00/0.00 pressure: 0.57
event11 TABLET_TOOL_AXIS +0.000s 209.39*/54.31* tilt: 0.00/0.00 pressure: 0.57
event11 TABLET_TOOL_AXIS +0.000s 211.80*/53.91* tilt: 0.00/0.00 pressure: 0.57
event11 TABLET_TOOL_AXIS +0.000s 213.93*/53.59* tilt: 0.00/0.00 pressure: 0.57
event11 TABLET_TOOL_AXIS +0.000s 215.86*/53.27* tilt: 0.00/0.00 pressure: 0.57
event11 TABLET_TOOL_TIP +0.000s 218.40*/52.80* tilt: 0.00/0.00 pressure: 0.00* up
event11 TABLET_TOOL_PROXIMITY +0.000s 218.40/52.80 tilt: 0.00/0.00 pressure: 0.00 pen (0, id 0) proximity-out The issue happens on both linux-lts and linux; I tried running on X11 and there nothing seems to be drawn. I'm running KDE Plasma.
Do you have any ideas how to debug this and what could be the root cause?
Last edited by marmistrz (2024-06-03 18:33:30)
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#2 2024-06-03 18:22:26
- gromit
- Administrator
- From: Germany
- Registered: 2024-02-10
- Posts: 1,525
- Website
Re: [solved] Wacom pen stopped working: libinput events not always emitted
Did you already try to downgrade the linux package? Maybe the same bad commits were backported to the linux and linux-lts packages..
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#3 2024-06-03 18:33:18
- marmistrz
- Member
- Registered: 2016-01-05
- Posts: 129
Re: [solved] Wacom pen stopped working: libinput events not always emitted
The root cause was really silly: the battery needed replacing. The stylus only lights up a white diode to signal this.
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#4 2024-06-03 18:33:50
- gromit
- Administrator
- From: Germany
- Registered: 2024-02-10
- Posts: 1,525
- Website
Re: [solved] Wacom pen stopped working: libinput events not always emitted
Haha well thats another fix, glad we got it solved tho 
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