how to fix scale when using hdmi for macbook pro

Also that the resolution of one monitor can differ from desktop to clamshell mode and that it seems that clamshell activation goes from black over 1440 to 1920.Īnd I wonder if I can do or read something about the 'not usable for desktop'-tag or what exactly happens if I close the lid. Under Graphics and Video Support (or similar), you should see something like, Simultaneously supports full native resolution on the built-in display, and up to 2560 by 1600 pixels on up to two external displays. If I don't do the 1440 twice, the problem changes to: now is the external monitor black in desktop mode. Search for your exact model on Apple’s website (e.g., MacBook Pro Retina mid-2012), and then click Support to reveal the technical specifications sheet. 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) NOTE If HDMI Scaling is at 0 but the image is underscanned and cannot be adjusted to fill the screen area, then ensure that the Image Size option in the on-screen menu of the display is set to Auto or. Move the slider to adjust the image until it fits the entire screen. 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.īut switchresx can easily add a scaled 3840x2160 (1920x1080hidpi) which works fine on Dell u2515h hdmi and miniDP-DP at MBproEarly2013Retina Connect both computers to the same network. HDMI Scaling value defaults at 0 and can be adjusted using the slider. 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'.

How to fix scale when using hdmi for macbook pro