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I have laptop running Linux mint cinnamon which I am trying use with a portable second monitor. The laptop screen is 3840x2160 and the second display is 2560x1600 I am using linux mints in-built "Display" utility with fractional screen controls enabled (if not both screens are locked to the same scaling).

I have the laptop screen set to 200% display scaling and would like to set the portable monitor to either 125% or 150% scaling.

If I set the second display to anything other than 200% scaling the display only shows the top left of the desktop (i.e. the portable monitor is showing a desktop which the physical size of a 20-27" screen however as it is only 16" I am seeing only the top-left portion of it).

How can i fix this?

Z0OM
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Pioneer_11
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1 Answers1

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This should/could work.

Use xrandr in your .xinitrc, should be something like:

xrandr --output <name_of_primary_display> --primary --mode 3840x2160 --rate <display_refresh_rate> --scale 2x2 --output <second_display> --mode 2560x1600 --rate <display_refresh_rate> --scale 1.25x1.25 --right-of <name_of_primary_display>

Use the flags --right-of or --left-of to set the position of the display.

To retrieve the information information needed, do xrandr -q.

Before putting that command in .xinitrc, try using it directly from the command line.

enrico223
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  • I tried the command you suggested. However, for some reason it set the scale of the primary display to 100% and the secondary display was again only showing the top left of the desktop – Pioneer_11 Jun 30 '23 at 12:14
  • Look at the answer from [here](https://unix.stackexchange.com/questions/596887/how-to-scale-the-resolution-display-of-the-desktop-and-or-applications), it has all the info you need to make it work, especially the part of the second screen. It seems the problem lays in the discrepancy between scaling and resolution. – enrico223 Jun 30 '23 at 21:41