Thank you for your quick feedback.
I got :
sudo i2cdetect -l
i2c-0 i2c rk3x-i2c I2C adapter
i2c-1 i2c rk3x-i2c I2C adapter
i2c-3 i2c rk3x-i2c I2C adapter
i2c-4 i2c rk3x-i2c I2C adapter
i2c-7 i2c rk3x-i2c I2C adapter
sudo get-edid | parse-edid
This is read-edid version 3.0.2. Prepare for some fun.
Attempting to use i2c interface
No EDID on bus 0
No EDID on bus 1
Looks like no busses have an EDID. Sorry!
I'm sorry nothing was successful. Maybe try some other arguments
if you played with them, or send an email to Matthew Kern <pyrophobicman@gmail.com>.
Partial Read... Try again
I have changed the cable, but it is the same. I will check on the patch if I can deploy it.