Thanks for the clarifications... It sounds like the GPIO it's self is not a true bi-directional pin if "read the value is not guaranteed that the...
I updated /etc/udev/rules.d/10-imx.rules by adding the following lines to the very end of the file: SUBSYSTEM=="gpio", ACTION=="add",...
I had the same issue. I have a cheap TV and changing the zoom level did not help. But... There was a "HDMI mode" control on one of the TV...
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