SWITCHRESX 4K SCALED TO 1080P 1080P

In either case, the original video obviously did not capture all the pixel data that the final video requires, so the scaling tool interpolates the others.

SWITCHRESX 4K SCALED TO 1080P 1080P

This could be a small jump from 1080p to 1440p or a large 4K scaling jump from 1080p to 4K.

If I don't do the 1440 twice, the problem changes to: now is the external monitor black in desktop mode. Upscaling is taking a low-resolution video and making it a higher resolution. So I finally found out that I got to set external to 1440x900 !non hidpi, close the lid, the screen doesn't turn black, now same to do again, than back to the new HiDPI and voila I can open and close the lid like expected even after sleep but not after reboot. Until I close the lid to clamshell mode, then the Dell went black (not inactive, but by a streamer like splashtop you can see there is no more monitor recognized by the system) I also think I read that this is not a fine (1to4?) pixel scaling which is more difficult to handle for developers, maybe causing blurry so imperfection is not wanted.Д«ut switchresx can easily add a scaled 3840x2160 (1920x1080hidpi) which works fine on Dell u2515h hdmi and miniDP-DP at MBproEarly2013Retina I don't understand how everything comes together but after a few weeks intense search I found out that a 1920x1080hidpi is marked as 'not usable for the desktop'.

Switchresx 4k scaled to 1080p