12

When I installed Freya on a 22" Screen, everything was fine. But when I plug the PC in a 40" TV, the desktop is upscaled to 200%. The screen resolution is correctly 1920x1080 but because of the upscaling it looks more like 960x540.

When I rescale it with xrandr --output DFP2 --scale 2x2 the screen looks fine, but the mouse cursor is confined to the top left quarter of the screen.

How can I fix this problem?

  • My answer is pretty much a shot in the dark as this problem is probably hard to debug... – quassy Jul 16 '15 at 19:50
11

dconf-editor

(Install dconf-editor by typing sudo apt-get install dconf-editor in the command line.)

Open dconf-editor and navigate to org.gnome.desktop.interface and check the value of scaling-factor. It is probably set to 2 (which is for high density displays) and you should change it to 1. For now, non-integer values will not work.

  • What do you mean by "as of now"? A recent update to dconf or Gala or what? – Gabriel Jul 16 '15 at 20:56
  • 1
    It was set to 0, probably auto scaling. Changing it to 1 worked fine. Thanks. – Gan Jul 16 '15 at 21:37
  • 1
    @Gan Please accept an answer if the answer solved your problem. Thanks – Stiffler Jul 17 '15 at 14:07
  • 1
    @Gabriel Mistake on my part. I don't think floating numbers were ever supported. – quassy Jul 17 '15 at 19:38
  • 0 uses the default for the display btw. I was fiddling with numbers, then set it back to 0 and some windows weren't changing, but after a reboot (still set at 0), everything looks good. – Travis Reeder Feb 15 '17 at 19:28
5

Terminal

To solve your problem without installing extra software:

  • Open Terminal

  • to get your scaling factor
    gsettings get org.gnome.desktop.interface scaling-factor

  • to set your scaling factor
    gsettings set org.gnome.desktop.interface scaling-factor 1

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.