From time to time, the HDMI display gets disturbed, but not always in the same way. Most of the time, the pattern is a blinking pinkish display with pixel noise, but other times it is only pixel noise (swarm of white dots), as if the HDMI signal were disturbed or as if the EDID were misinterpreted. This lasts a few minutes, then everything goes back to normal. This is random, but it seems to mostly occur when the board is cold.
Issue observed with:
several VIM boards
Since this occurs for 1080p60, I am certain this is not caused by the HDMI cable. I don’t know if this is caused by the VIM or by the TV, possibly not supporting some EMC stress. Has anyone already observed this?