When I start my PC, the elementary login screen shows up on my secondary monitor, but when I sign in and get to the desktop, everything display-wise is correctly set up (dock and menu bar on primary monitor). How do I fix this?

2 Answers 2


I was able to fix this by setting the correct primary monitor via LightDM.

LightDM is elementaryOS's lock screen (aka pantheon-greeter)

  1. First you need to find the name for your primary monitor using the command xrandr. It will be something similar to "HDMI1" or "DVI-0".

  2. Once you have the correct monitor name you will need to edit the file /etc/lightdm/lightdm.conf. In that file you will need to add the following line:

  3. display-setup-script=xrandr --output HDMI-0 --primary

  4. Make sure the HDMI-0 in the line above is your own monitor name.

  5. Restart computer


It is an old bug. It has been reported here: https://bugs.launchpad.net/elementaryos/+bug/1355561

I didn't find a workaround for this yet.

There is also a bounty open for this issue, here: https://www.bountysource.com/issues/3733137-login-screen-is-the-resolution-of-the-primary-monitor-on-all-monitors

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

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