painting with any brush does not show on canvas, it appear only after clicking on any upper command menu like edit, view or other.
You have to disable opengl or update your intel display driver to a version that works -- it's not something we can work around in krita since we don't have access to hardware with broken drivers, but it is a bug in the intel display driver: https://docs.krita.org/KritaFAQ#Krita_starts_with_a_black_or_blank_canvas_and_nothing_changes_when_you_try_to_draw.2Fshows_a_black_or_blank_screen_on_my_Windows_system_with_an_Intel_GPU *** This bug has been marked as a duplicate of bug 360601 ***