Almost 1 year further and still no solution! Just to be clear of the scenerio a recab of the problem: Put op Teamviewer session to a remote standalone PC with Widescreen resolution 3440x1440 monitor. When session is build up, screen resolution is presented as 640x480 no other resolution selection possible. Startup remote PC and TV Leave remote PC monitor switched off Try to login to this PC with laptop or other PC Screen resolution presented in the TV session is 640x480 no other resolution selection possible. This event does NOT occur on a remote system with resolution of 1920x1200 NOTE: When the monitor is switched on, it gives same result, but when you login localy and screenlock the system, a TV session to this machine wil give you the right resolution of 3440 x1440. So we can conclude that there is some sort of detection issue as long as the Remote PC is not logged in before the TV session to this machine is started.
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