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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, 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