Delete comment from: Ken Shirriff's blog
I went through a similar adventure years ago with an old favorite monitor that refused to work right on a 2010 Mac Mini. Resolving the issue required dumping the EDID, doing some hex editing, then reflashing the EDID and was really educational. Probably would've been a great excuse to build one of these types of PocketBeagle/RPi projects!
Instead I had to rummage through my "historical hardware" bins to find an (apparently rare) VGA card that'd work with the i2c EDID dump executable I had found, a floppy drive, DOS boot disk, and more fun things to get it going. A bit less fun but it did the trick.
Found the article I used for the fix on the Wayback Machine. Was the first time I had ever taken a close look at the world of DCC, EDID and i2c.
Totally worth it though. Monitor's still going strong some 11 years after its manufacture. :)
Mar 26, 2018, 7:49:50 PM
Posted to Reading a VGA monitor's configuration data with I2C and a PocketBeagle