https://bugs.freedesktop.org/show_bug.cgi?id=105005
--- Comment #13 from Dmitry terapy-session@bk.ru --- In the case of option tearfree on came out of sleep. But there was a bug that flew in resolution 1366x768 and 1080p was not available. But it is possible problems xfce4, or I config the curve did. I have there
Section "Screen" Identifier "Screen" DefaultDepth 24 SubSection "Display" Depth 24 EndSubSection EndSection
option tearfree on