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The new Pi 4 has two HDMI Ports. After booting Raspbian, the first screen (HDMI-0) should display the console and the second screen (HDMI-1) should display the X11 desktop.

My first thought was editing good old xorg.conf but newer debians don't have this file. Do I need to change config.txt?

Not sure how to start... Thx for your help.

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    Good old xorg.conf is still used if you create it. X11 only use defaults if it doesn't find it. – Ingo Sep 28 '19 at 20:43
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    It should be doable with [screen] and [monitor] sections and so on. But I'm unsure how to select the hdmi output by the application (console ws. xserver). I watch your question as favorite. – Ingo Sep 28 '19 at 20:50
  • While getting deeper into modern X11 configurations my requirements changed. So unfortunately I cannot answer my own question. Coming from an old xorg-conf-configures-x11 mindset I found the following links useful to understand the newer (xrandr focused) approach: How to use xrandr and Multihead. – erunima Sep 30 '19 at 16:26

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