The ONLY way I can Miracast from my Surface Pro 3 to the LG TV is for both the TV and computer be on the 2.4 GHz wifi network. It will not work if they are both on the 5 GHz wifi network, or if one is on 2.4 GHz and the other is on 5 GHz and vice versa. Not sure if it's a Surface Pro 3 issues or the LG TV issue with it not working over 5 GHz.
Word of warning: You will lose all your wifi saved networks and passwords if you uninstall and reinstall your Marvell network adapter (which did not fix anything for me).
Screen Share with Windows 10
in LG TV and LG webOS Smart TV Discussion
Posted
The ONLY way I can Miracast from my Surface Pro 3 to the LG TV is for both the TV and computer be on the 2.4 GHz wifi network. It will not work if they are both on the 5 GHz wifi network, or if one is on 2.4 GHz and the other is on 5 GHz and vice versa. Not sure if it's a Surface Pro 3 issues or the LG TV issue with it not working over 5 GHz.
Word of warning: You will lose all your wifi saved networks and passwords if you uninstall and reinstall your Marvell network adapter (which did not fix anything for me).