As @vsulimov mention, the solution from @nightwing666 works, in my case in a ThinkPad X1 Gen 2, but the video scaling in full screen doesn't, it makes any video you try to reproduce in full screen to blink, and if you set the video again in not fullscreen mode the video is scaled x2, or it makes the video player to crash. I tried with the default video player from Ubuntu, with VLC Player and even with Firefox reproducing a video from Youtube, in all the cases the result is the same: the video is reproduced well as long you don't enable full screen video reproduction. I tried with scalling at 125% and 150% and it failed in both cases.
As @vsulimov mention, the solution from @nightwing666 works, in my case in a ThinkPad X1 Gen 2, but the video scaling in full screen doesn't, it makes any video you try to reproduce in full screen to blink, and if you set the video again in not fullscreen mode the video is scaled x2, or it makes the video player to crash. I tried with the default video player from Ubuntu, with VLC Player and even with Firefox reproducing a video from Youtube, in all the cases the result is the same: the video is reproduced well as long you don't enable full screen video reproduction. I tried with scalling at 125% and 150% and it failed in both cases.