Created attachment 117562 [details] glxinfo output KDE scaling started to produce diverse displacements problems in krita canvas. STEPS TO REPRODUCE 1. Set KDE scale to 1.5 OBSERVED RESULT 1. Window positioned somewhere to the right of the dual display setup, displacement happens to left. 1. Window positioned somewhere to the left of the dual display setup, displacement happens to right. 3. Some times it stay mapped to some point in canvas, pressing it sustain it until brush is released. 4. Irregular displacements depending on screen position. EXPECTED RESULT 1. No displacement, brush synchronized with mouse pointer. SOFTWARE/OS VERSIONS Fedora 29 KDE Plasma: 5.14.4 Qt: 5.11.3 KDE Frameworks: 5.53.0 kernel: 4.19.15-300.fc29.x86_64 xinput version 1.6.2 XI version on server: 2.3 libinput 1.12.5 ADDITIONAL INFORMATION Screen 0: minimum 8 x 8, current 7680 x 2160, maximum 32767 x 32767 DVI-D-0 disconnected (normal left inverted right x axis y axis) HDMI-0 connected primary 3840x2160+3840+0 (normal left inverted right x axis y axis) 600mm x 340mm 3840x2160 60.00*+ 59.94 50.00 30.00 29.97 25.00 23.98 2560x1440 59.95 1920x1080 60.00 60.00 59.94 29.97 23.98 60.00 1600x900 60.00 1280x1024 60.02 1280x800 59.81 1280x720 60.00 59.94 1152x864 60.00 1024x768 60.00 800x600 60.32 720x480 59.94 640x480 59.94 59.93 HDMI-1 connected 3840x1620+0+270 (normal left inverted right x axis y axis) 677mm x 290mm 2560x1080 60.00*+ 1920x1080 60.00 59.94 50.00 29.97 60.05 60.00 50.04 1680x1050 59.95 1600x900 60.00 1280x1024 75.02 60.02 1280x720 60.00 59.94 50.00 1152x864 75.00 1024x768 75.03 60.00 800x600 75.00 60.32 720x576 50.00 720x480 59.94 640x480 75.00 59.94 59.93 DP-0 disconnected (normal left inverted right x axis y axis) DP-1 disconnected (normal left inverted right x axis y axis) DP-2 disconnected (normal left inverted right x axis y axis) DP-3 disconnected (normal left inverted right x axis y axis)
Are you really using 4.0.4? If so, update to 4.1.7 first.
The same result in both 4.1.1 and 4.1.7.
Thanks for your comment! Automatically switching the status of this bug to REPORTED so that the KDE team knows that the bug is ready to get confirmed. In the future you may also do this yourself when providing needed information.
Can you check if this still happens with the latest nightly? ('Krita Next' on the downloads page) Think dmitry and alvin fixed some stuff here... Could you also check if the same happens with scaling 2.0? Because then we know it might be related to fractional scaling.
Yes, it is fixed, I tested in both 1.5x and 2.0x, worked in: 4.2.0 (git 01fe31d) 4.1.8 (git 0218025) The problem was present in any case, be it fractional or non fractional, the last version with the problem that I've tested is 1.7, thanks for solving it.