| Summary: | [Wacom Tablet] Wayland + Dual tablet setup result in wrong pressure reading in one of the tablet (Plasma 6.3) | ||
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| Product: | [I don't know] kde | Reporter: | Protoniv <ss93078> |
| Component: | general | Assignee: | Unassigned bugs <unassigned-bugs-null> |
| Status: | RESOLVED UPSTREAM | ||
| Severity: | normal | CC: | josh, nicolas.fella |
| Priority: | NOR | ||
| Version First Reported In: | unspecified | ||
| Target Milestone: | --- | ||
| Platform: | openSUSE | ||
| OS: | Linux | ||
| Latest Commit: | Version Fixed In: | ||
| Sentry Crash Report: | |||
| Attachments: |
Output from tablet tester
Another session for Tablet Tester with reverse order Reverse order test result from Teblet tester |
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Created attachment 178268 [details]
Another session for Tablet Tester with reverse order
Created attachment 178269 [details]
Reverse order test result from Teblet tester
I don't have enough tablets to test this myself unfortunately. Can you please run "sudo libinput debug-events" and play around with that a bit? It should show you the right amount of pressure in a range between 0 and 1 at all times regardless of the hardware's pressure range. If the results don't look right then it's probably a driver or libinput issue (In reply to Nicolas Fella from comment #3) > It should show you the right amount of pressure in a range between 0 and 1 > at all times regardless of the hardware's pressure range. If the results > don't look right then it's probably a driver or libinput issue Hi, thanks to the quick reply! I ran the command "sudo libinput debug-events" and sadly, the result is aligned with the tablet tester, which doesn't look right. Thanks. That at least matches what I expected. That means this is most likely not an issue with Plasma code. Can you please report this to https://gitlab.freedesktop.org/libinput/libinput/-/issues ? Reported, thanks for your help! https://gitlab.freedesktop.org/libinput/libinput/-/issues/1089 |
Created attachment 178267 [details] Output from tablet tester SUMMARY I have two wacom tablet device connected, `Intous pro L (PTH-851)` and `Cintiq 13 pro (DTH-1320)`. If login under Wayland and pickup the first device, the pressure reading respond my stylus pressure well, but the second device would give me the wrong pressure reading and make it unusable (too little or too strong to draw). Use the **same** stylus for testing. For example: First pickup Intous pro L and draw --> OK Next pickup Cintiq 13 pro --> Pressure easily reach 100% even I just lightly press down the stylus --- logout and login reset the behavior --- First Cintiq 13 pro --> pressure reading OK Next Intous pro L --> Pressure hardly get over 18% even with a heavy press. Pressure reading tool: Tablet Tester in Krita The issue doesn't appear if switching to x11. The issue has presented in Plasma 6.2 (when I first switch to Wayland) OBSERVED RESULT the pressure reading get wrong depending on use order of the device. EXPECTED RESULT Pressure reading should be similar between two device and also x11 SOFTWARE/OS VERSIONS Operating System: openSUSE Tumbleweed 20250211 KDE Plasma Version: 6.3.0 KDE Frameworks Version: 6.10.0 Qt Version: 6.8.2 Kernel Version: 6.13.1-1-default (64-bit) Graphics Platform: Wayland ADDITIONAL INFORMATION Intous pro L (PTH-851) hardware support up to 2048 pressure level Cintiq 13 pro (DTH-1320) hardware support up to 8192 pressure level Stylus is paired with PTH-851 which only support 2048 level