For the past few months whenever I turn on my pc (um890 pro), my lg c1 will turn on and switch to the correct hdmi input (hdmi 3), but it will show that there's no signal detected. Switching TV on and off manually doesn't work, switching the hdmi input to source and back hdmi 3 also doesn't work. I usually had to force off and on the pc again (with the TV on) for the tv to detect input. Anyone with the same issue?