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Tags: display-resolution   amd-graphics  
Link: πŸ” See Original Answer on Ask Ubuntu πŸ”—

URL: https://askubuntu.com/q/1200715
Title: Display Resolution Setting is Lost After Wake from Suspend
ID: /2020/01/04/Display-Resolution-Setting-is-Lost-After-Wake-from-Suspend
Created: January 4, 2020
Upload: November 24, 2022    Layout:  post
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From time to time the Window Manager will reset my displays as well. So as to not have to go manually reset them (or reboot) I’ve created a function in ~/.bashrc to do this for me:

xreset () {

    # Reset xrandr to normal, first use: xrandr | grep " connected "
    # HDMI-0 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 1107mm x 623mm
    # eDP-1-1 connected primary 1920x1080+3840+2160 (normal left inverted right x axis y axis) 382mm x 215mm
    # DP-1-1 connected 3840x2160+1920+0 (normal left inverted right x axis y axis) 1600mm x 900mm
    xrandr --output HDMI-0  --mode 1920x1080 --pos 0x0       --rotate normal \
           --output eDP-1-1 --mode 1920x1080 --pos 3840x2160 --rotate normal \
           --primary \
           --output DP-1-1  --mode 3840x2160 --pos 1920x0    --rotate normal

} # xreset

Whenever the screens are β€œwacky” I open a terminal and type xreset.

The first step for you is to create a similar function. The next step is to have it automatically called when suspending from resume. To do that create a script in /lib/systemd/system-sleep and mark it executable.

Of course the desirable solution is to fix the Window Manager (Unity, GDM, etc) but if that isn’t possible this band-aid approach can be taken.

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