Hello Vasile, > $ sudo ddcutil setvcp 60 0x1b > Display not found I'd look at the source of the ddcutil program to see what conditions can make it print ‘Display not found’ as that might give a clue as to what particular step is failing. There's also looks to be lots of documentation on ddcutil's site, e.g. https://www.ddcutil.com/config_steps/ suggests ‘ddcutil environment’ and ‘ddcutil usbenvironment’. There are other pages on that site worth looking at. -- Cheers, Ralph.
