> Interesting, which graphics card are you using? The flickerig appears with integrated Intel graphics:
00:02.0 VGA compatible controller [0300]: Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] (rev 09) Subsystem: Lenovo 3rd Gen Core processor Graphics Controller [17aa:21f3] Kernel driver in use: i915 Kernel modules: i915 -- SvantoViit