I am experiencing serious screen flickering recently. Not because of lost or delayed frames but a flickering caused by changes in the brightness of the screen. After booting LE everything is fine, then the flickering slowly starts and gains intensity (~30-60mins). The flickering is not a regular pattern but reminds me of the flickering of a I/O status led of a network switch. An interesting fact might also be that if I disconnect the HDMI Cable of the Beebox and reconnect it without rebooting the flickering is also gone for a while but will appear again some time later. I had these issues 1-2 years ago with the OpenElec releases at that time, but this issue was long gone. Now it is back.
I am using LE 8.2.5 on a ASROCK Beebox N3150 connected via HDMI to a Marantz NR1604 AVR connected via HDMI to a Sony VPL-HW40ES beamer.
What I should also mention is that I also use a PS4 connected to the AVR and beamer without any issues. So the beamer and the AVR are ok.
Is this a HW problem of the Beebox or an issue with the LE graphics driver?