Hello everybody,

I would be very grateful if someone could help me to solve the following problem:

When I start my laptop with an external monitor switched to it via VGA or HDM I get both screens in white. But when I first start the laptop computer without the external monitor switched to it and later on I switch it to the laptop computer it is not detected by Ubuntu 16.04 because there is not any VGA nor HDMI video output signal.

I have updated the system to the latest mesa and xorg packages and the problems remain the same.

With many thanks and best wishes,

Antonio.


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