Created attachment 185701 [details] Display mapping options SUMMARY For a bit of background, I haven't touched the Wacom settings in months, and my tablet was always mapped to my primary monitor (which would be eDP, see pic). I only just now changed the mapping. Now, no matter the display I select, the tablet is always stuck on my secondary monitor (MSI MP223). Follow current screen does not work. I currently have to use Všechny obrazovky (All Screens) mapped to the portion of my primary screen. The display's primary settings does not affect this, unplugging & replugging the display does nothing. Disabling the monitor from within settings, places the cursor on the correct screen, but causes Krita's brush to be offset (but that's worth a different bug report). Physically unplugging the monitor fixes that. STEPS TO REPRODUCE 1. Open System Setting's Tablet module 2. Try to switch to a different display 3. Try to switch back to the original display OBSERVED RESULT The cursor does not go back to the original display. EXPECTED RESULT The cursor should follow the original display SOFTWARE/OS VERSIONS Linux/KDE Plasma: Kernel 6.16.10 KDE Plasma Version: Plasma 6.4.5 KDE Frameworks Version: 6.18.0 Qt Version: 6.9.2 ADDITIONAL INFORMATION
I am experiencing a similar issue with both a touchscreen and a graphic tablet. It would seem once the target screen is chosen it cannot be changed to any other screen anymore. Even rebooting doesn't help. In case of touchscreen KDE guesses it automatically and you don't even get to choose the correct one the first time.
I found a workaround: * Open .config/kwinoutputconfig.json, find the display you want to map your tablet to, copy its "uuid" field value. * Open .config/kcminputrc, find your tablet there and replace "OutputUuid" value with the one you copied earlier. * Restart KDE session by re-logging or rebooting. Now your pen should map to correct screen. I've also noticed that OutputUuid in kcminputrc doesn't change when target screen is changed in the settings.
(In reply to rkolbaskin from comment #2) > I found a workaround: > * Open .config/kwinoutputconfig.json, find the display you want to map your > tablet to, copy its "uuid" field value. > * Open .config/kcminputrc, find your tablet there and replace "OutputUuid" > value with the one you copied earlier. > * Restart KDE session by re-logging or rebooting. Now your pen should map to > correct screen. > > I've also noticed that OutputUuid in kcminputrc doesn't change when target > screen is changed in the settings. Can confirm changing the outputUuid fixes this. Thank you so much!
A possibly relevant merge request was started @ https://invent.kde.org/plasma/kwin/-/merge_requests/8270
Git commit aa1ef8743556208f6ffc2a3e16dc838dbd043aa6 by Roman Kolbaskin. Committed on 20/10/2025 at 11:11. Pushed by zamundaaa into branch 'master'. backends/libinput: Fixed Device::setOutputName not changing the output Commit f860be3a intoduced a bug where changing target display for touchscreen or tablet once would prevent it being changed again. It is caused by setOutputName method updating the output only if m_outputUuid is not already set. This change makes both setOutputName and setOutputUuid update stored name UUID and pointer to output screen and update "OutputUuid" property in the config file. setConfigOutputName will change the output only if it is not already set. It is only used for loading from config and needed for backwards compatibility with config file created before matching display by UUID was introduced. M +24 -12 src/backends/libinput/device.cpp https://invent.kde.org/plasma/kwin/-/commit/aa1ef8743556208f6ffc2a3e16dc838dbd043aa6
Git commit 3c5941c42cb88aadbac7a4d046318e078d459cce by Xaver Hugl. Committed on 20/10/2025 at 12:15. Pushed by zamundaaa into branch 'Plasma/6.4'. backends/libinput: Fixed Device::setOutputName not changing the output Commit f860be3a intoduced a bug where changing target display for touchscreen or tablet once would prevent it being changed again. It is caused by setOutputName method updating the output only if m_outputUuid is not already set. This change makes both setOutputName and setOutputUuid update stored name UUID and pointer to output screen and update "OutputUuid" property in the config file. setConfigOutputName will change the output only if it is not already set. It is only used for loading from config and needed for backwards compatibility with config file created before matching display by UUID was introduced. (cherry picked from commit aa1ef8743556208f6ffc2a3e16dc838dbd043aa6) Co-authored-by: Roman Kolbaskin <rkolbaskin@tutanota.com> M +24 -12 src/backends/libinput/device.cpp https://invent.kde.org/plasma/kwin/-/commit/3c5941c42cb88aadbac7a4d046318e078d459cce
Git commit 454096a4040574954bf51ec6fa863962ec0b66a5 by Xaver Hugl. Committed on 20/10/2025 at 19:03. Pushed by zamundaaa into branch 'Plasma/6.5'. backends/libinput: Fixed Device::setOutputName not changing the output Commit f860be3a intoduced a bug where changing target display for touchscreen or tablet once would prevent it being changed again. It is caused by setOutputName method updating the output only if m_outputUuid is not already set. This change makes both setOutputName and setOutputUuid update stored name UUID and pointer to output screen and update "OutputUuid" property in the config file. setConfigOutputName will change the output only if it is not already set. It is only used for loading from config and needed for backwards compatibility with config file created before matching display by UUID was introduced. (cherry picked from commit aa1ef8743556208f6ffc2a3e16dc838dbd043aa6) Co-authored-by: Roman Kolbaskin <rkolbaskin@tutanota.com> M +24 -12 src/backends/libinput/device.cpp https://invent.kde.org/plasma/kwin/-/commit/454096a4040574954bf51ec6fa863962ec0b66a5