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Detect hdmi state and audio jack plugged in

lrou
in Beginners

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Hello, 

With NanoPI-m2 (debian jessie) and OrangePI-PC (ubuntu xenial) at hand, I try to detect states of hdmi and audio jack (plugged in or not).

With nanopi I can get the hdmi state from syslog kern messages (HDMI HPD State 0x0 or 0x1, according to it's plugged in or not), but I haven't found something like that on Orange PI.

And I've found no way to recognize if the audio jack is plugged in or not.

 

Any suggestion, howto get that, will be greatly appreciated.

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