@broberg It didn’t work out for me, but that’s okay, I’ll try to see if it works out differently.
Thanks for help
Another solution i found is “updating” font awesome icons from 4 to 5.
but the problem is when i start MagicMirror it takes a long time to load and some modules do not load well.
if I don’t have the sensor activated, the brightness goes perfectly. But if it is activated and I leave a few minutes without passing in front of it, when passing has a fairly low brightness, it takes a few long seconds to regain the brightness. In a beginning I opened this thread to know if the module towards something with the brightness etc.
But it looks like it belongs to my (old) screen, I’ll try it on a newer screen.