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I have a 4k monitor runs at 4k 60hz, and occasionally I got HDMI output lost in standby mode. I have updated the GFX driver to latest .4678, and HDMI firmware to 1.66. but no HDMI lost are solved and I have got many black screen flickers when playback 4k videos and photos. Sometime even in web browsers.
Do some other one have similar problems? I am doubt it may be a driver bug.
Thanks and regards