Thank you very much for your Tip. After last update I dindo used smart view. Today just stardet it in battery save mode, smart view asked to switch it off (before last update it was possible to do directly in opened form now you have to to do it yourself). I have switched and the screen has been set to WQHD... No chance to start mirroring. It was the last idei to open screed resolution settings :(. But the problem was there... John, thank you so much!
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