On Ubuntu 17.10 I was able to use different DPIs on my internal monitor and external one - 200% for QHD+ internal and 100% for FHD external. Now when I try to switch percent value on either of the monitors I get the other one switched as well.

Does anyone know how to change screen DPIs separately on Ubuntu 18.04?

1 Answer 1


Looks like the reason was that Ubuntu 18.04 switched back to Xorg as a default and 17.10 had Wayland as default display server. It appears that Xorg doesn't support different DPIs for different screens and Wayland does.

So the solution is: use Wayland - you can choose it on login screen.

Ubuntu 18.04 LTS silently overrides your choice to Xorg. Even though Wayland works better in most cases.

  • Scaling makes a lot of apps blurry in Wayland. As long as you never use Chrome or Firefox, Wayland is the way to go...
    – apdnu
    Aug 28, 2018 at 23:59
  • Chrome worked for me just fine actually. Aug 29, 2018 at 14:03
  • For me, Chrome and Firefox are both blurry on Wayland (with multiple monitors), but not on Xorg.
    – apdnu
    Aug 29, 2018 at 18:48

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