https://bugs.kde.org/show_bug.cgi?id=512549
Bug ID: 512549
Summary: KWin not forwarding stylus presses to applications
Classification: Plasma
Product: kwin
Version First 6.5.2
Reported In:
Platform: KDE Linux
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: input
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Target Milestone: ---
SUMMARY
(hardware: Asus Zenbook Flip UP3404VA, bundled "Asus Pen 2.0")
When trying to use the stylus, the cursor will follow where the pen is (both
~2cm from screen and touching), but when pressing the screen, nothing happens
on applications (Rnote, Krita + anything with a button)
STEPS TO REPRODUCE
1. Open into a session
2. Open any app like firefox, krita, and try and use the stylus
OBSERVED RESULT
Cursor moves fine, actual press events don't seem to get forwarded to the
application and thus canvas draws in krita, button presses in firefox etc don't
register
EXPECTED RESULT
Presses in e.g. firefox trigger the button
Strokes in e.g. krita are sent to krita, registered, drawn etc
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Kernel is 6.14.0-35-generic 64bit
KDE Plasma Version: 6.5.2
KDE Frameworks Version: 6.19.0
Qt Version: 6.9.3
ADDITIONAL INFORMATION
output of `sudo libinput debug-events`, testing the stylus briefly, truncated
for what seems important (full log is attached)
```
[...]
-event7 DEVICE_ADDED WDHT1F01:00 2575:0916 Stylus seat0
default group9 cap:T size 301x188mm left calib
[...]
event7 TABLET_TOOL_AXIS +0.002s 229.18*/150.76* tilt:
0.00/0.00 pressure: 0.00
[...]
event7 TABLET_TOOL_PROXIMITY +0.395s 232.06*/149.74* tilt:
0.00*/0.00* pressure: 0.00* pen (0, id 0xc2) proximity-in
axes:pt btn:S
[...]
event7 TABLET_TOOL_TIP +0.489s 232.44*/153.14* tilt:
8.78*/11.66* pressure: 0.55* down
[...]
event7 TABLET_TOOL_AXIS +0.500s 232.44/153.14 tilt:
8.78/11.67* pressure: 0.55
[...]
event7 TABLET_TOOL_AXIS +0.500s 232.44/153.14 tilt:
8.78/11.67* pressure: 0.55
[...]
event7 TABLET_TOOL_TIP +0.590s 233.98*/153.16 tilt:
0.00*/0.00* pressure: 0.00* up
[...]
event7 TABLET_TOOL_AXIS +0.591s 234.00*/153.17* tilt:
0.00/0.00 pressure: 0.00
[...]
event7 TABLET_TOOL_PROXIMITY +0.653s 233.92/153.06 tilt:
0.00/0.00 pressure: 0.00 pen (0, id 0xc2) proximity-out
```
so libinput seems to be okay, it does actually detect pen down events and
outputs pressure+tilt
output of `cat ~/.config/kcminputrc`:
```
amenaijp@amenaijp-zenbook:~$ cat ~/.config/kcminputrc
[ButtonRebinds][Tablet][Wacom Intuos BT M Pad]
0=Key,Ctrl+Z
[Libinput][1267][12737][ASUE120C:00 04F3:31C1 Mouse]
PointerAcceleration=-0.600
PointerAccelerationProfile=1
[Libinput][1267][12737][ASUE120C:00 04F3:31C1 Touchpad]
DisableWhileTyping=false
Enabled=true
NaturalScroll=true
TapAndDrag=false
```
The inbuilt tablet tester in krita and the tablet tester in System Settings
detect nothing, however, if I press a certain one of the two available buttons
on the stylus while trying to draw something, both tablet testers detect stylus
input as expected (though they don't detect the initial button press)
On windows, the stylus is detected only as mouse movement (per krita tablet
tester) but one of the buttons does do a special ring around the cursor when I
press it so the hardware seems okay and I'm attributing that to general win11
jankiness
The stylus did work okay a few months ago so the issue might be caused by a
regression
Thank you!
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