Hi, I ran into the same issue this morning. Disabling the compositor worked for me, but I noticed later that this is also documented in the package readme:
Screen compositor ================= If you're using the modesetting X driver and experience window flickering when the compositor is enabled, you should force the window manager to use the XPresent method for vblank: $xfwm4 --vblank=xpresent --replace & This is documented upstream at https://git.xfce.org/xfce/xfwm4/tree/COMPOSITOR#n114 Haven't tested that yet and left the compositor disabled, but I guess this will fix your issues. If it does, that's probably a good reminder to first look in the readme next time (me included). ;) Regards, André
