compiled edid-decode from GH: ls -1 /sys/class/drm/card0/card0*/edid | xargs -I '{}' bash -c 'ls -l {}; cat {} | ./edid-decode - | head ; echo' -r--r--r-- 1 root root 0 Jan 31 09:50 /sys/class/drm/card0/card0-Virtual-1/edid EDID version: 1.4 Manufacturer: RHT Model 1234 Serial Number 0 Made in week 42 of 2014 Digital display 8 bits per primary color channel DisplayPort interface Maximum image size: 32 cm x 20 cm Gamma: 2.20 Supported color formats: RGB 4:4:4 Default (sRGB) color space is primary color space time to drop read-edid? :)