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Qengineering / BananaPi-M2-Zero-OV5640

Banana Pi M2 zero with OV5640, WiringPi and OpenCV image.
https://qengineering.eu/deep-learning-with-raspberry-pi-and-alternatives.html
BSD 3-Clause "New" or "Revised" License
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display setting changed after power cycling hdmi monitor #3

Open nitrohepcat opened 2 years ago

nitrohepcat commented 2 years ago

after turning off the monitor overnight, when the monitor was powered back on the display settings somehow changed from the default 720 to a much higher resolution with lots of flickering

Qengineering commented 2 years ago

It's a known issue. As soon as the HDMI powers up, it sends its resolution to the HDMI source, the Banana Pi in our case. The Banana Pi sets its output to the newly received resolution. However, due to its limited RAM and its clock, the BPi isn't capable of refreshing the screen adequately. Hence the flickering. Sure there is one setting preventing the BPi from changing its resolution even when the HDMI asks for it. Unfortunately, I couldn't find it yet. If you have any ideas, please let me know.