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Ed Davies | 1 years ago (raw) | root | parent | reply | flag 
 @60ead002 VGA also has I²C. It's used to communicate with the monitor to find out its capabilities, even when it's switched off.

https://hackaday.com/2014/06/18/i2c-from-your-vga-port/
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Wesley Moore | 1 years ago (raw) | root | parent | reply | flag 
 @573d6b89 Huh well there you go. I knew there was a mechanism to query data from the display didn’t know it was I²C as well.