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Shinigami92

Member

From: Germany

Registered: 2020-09-11

Posts: 16

Website

[SOLVED] Trying to downscale primary monitor

I'm having a GTX 1080

An Acer X27P as primary monitor
and Asus VK278 as secondary monitor (on the right of primary)

Display Configuration: https://user-images.githubusercontent.c … c4feb6.png

nvidia-settings:
Acer X27P: https://user-images.githubusercontent.c … e31e52.png
Asus VK278: https://user-images.githubusercontent.c … fdaefd.png

How can I set a resolution of 2560x1440@120 for X27P
and 1920x1080@60 for VK278?

I need to scale my X27P to 4k in any way, cause it only supports 3840x2160, 1024x768, 800x600 and 640x480
In Windows 10 everything works fine and I can select any resolution I want and it auto-scales it

Last edited by Shinigami92 (2020-10-06 20:41:29)

seth

Member

Registered: 2012-09-03

Posts: 61,153

Re: [SOLVED] Trying to downscale primary monitor

xrandr --output DP-2 --scale 0.6667
xrandr --output DVI-D-0 --right-of DP-2

If you want the FullHD @1440p as well

xrandr --output DVI-D-0 --scale 1.3333 --right-of DP-2

instead.

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Shinigami92

Member

From: Germany

Registered: 2020-09-11

Posts: 16

Website

Re: [SOLVED] Trying to downscale primary monitor

"xrandr --output DP-2 --scale 0.6667" worked

"xrandr --output DVI-D-0 --right-of DP-2" didn't changed anything as before

"xrandr --output DVI-D-0 --scale 1.3333 --right-of DP-2" results in

X Error of failed request:  BadMatch (invalid parameter attributes)
  Major opcode of failed request:  140 (RANDR)
  Minor opcode of failed request:  7 (RRSetScreenSize)
  Serial number of failed request:  44
  Current serial number in output stream:  46

but that's not a problem for me

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Only "problem" right now is that between my primary and my secondary monitor
there is something like a invisible space
so when I move my mouse to the right, it is not instantly on the secondary monitor

But better as nothing right now, cause I can play some games better on this resolution and get better fps, so thx

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If you have a solution to the cap between both monitors, I could mark this as solved

seth

Member

Registered: 2012-09-03

Posts: 61,153

Re: [SOLVED] Trying to downscale primary monitor

"xrandr --output DVI-D-0 --right-of DP-2" merely sets the DVI-D-0 output  (VK278) to the right of the DP-2 output (you want to call that after scaling the DP-2 output) which also should eliminate the gap.
You can also enforce an absolute position like

xrandr --output DVI-D-0 --pos 2560x0

The last call might fail for the combined scale and repositioning - you could try to separate those (if you wanted to upscale the smaller output)

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How to upload text · How to boot w/o GUI · Disable Windows Fast-Start! · Fix your xinitrc

Shinigami92

Member

From: Germany

Registered: 2020-09-11

Posts: 16

Website

Re: [SOLVED] Trying to downscale primary monitor

Nice!

"xrandr --output DP-2 --scale 0.6667 --output DVI-D-0 --pos 2560x0" worked