If you see Built-in Display : Nan-inch (0 x 0) while connected to another Mac on the network, it is indicating to you that the GPU or iGFX can not see the attached display as with the example below. To fix it, check all the cables and power status.
If you see Built-in Display : Nan-inch (0 x 0) while connected to another Mac on the network, it is indicating to you that the GPU or iGFX can not see the attached display as with the example below. To fix it, check all the cables and power status.