SUMMARY *note:* this is with libinput version 1.28.0 which should include https://gitlab.freedesktop.org/libinput/libinput/-/merge_requests/1118 When tablet area is mapped to portion of the tablet input is not detected (cursor does not move) if you go from outside the area to inside the area. It only gets detected if you hover (so the stylus is not detected by the tablet) and then go inside the mapped tablet area. "libinput debug-events" events are received even outside the mapped area, also when inside the mapped area while the cursor is not moving. STEPS TO REPRODUCE 1. Map tablet area to portion 2. Go from outside the tablet area to inside the tablet area OBSERVED RESULT Cursor does not move EXPECTED RESULT Cursor moves as soon as the mapped tablet area is reached. SOFTWARE/OS VERSIONS Linux/KDE Plasma: KDE Plasma Version: 6.3.80 KDE Frameworks Version: 6.13.0 Qt Version: 6.8.2 libinput 1.28.0 ADDITIONAL INFORMATION
A little bit more digging: It depends on the mapped Area. Example 1: The tablet Area is mapped to the left half Once outside the tablet area the cursor can only enter from the right side Example 2: The tablet Area is mapped to the right half Once outside the tablet area the cursor can only enter from the left side Example 3: The tablet Area is mapped to the top left quarter. Once outside the tablet area the cursor can only enter from the bottom right side Example 4: The tablet Area is mapped to the top right quarter Once outside the tablet area the cursor can only enter from the bottom left side When its a mapped area in the center, the cursor can sometimes enter, not sure when tough.