Custom viewport size for Linux/Xorg

scrfix.md

Due to backpack pressure, a dark shadow appread on my laptop screen like this:

┌────────────┬┬┬┬┬┬──────┐
│ ┌─terminal─┼┼┼┼┼┼────┐ │
│ │          ││││││    │ │
│ │          ││││││    │ │
│ │          ││││││    │ │
│ │          ││││││    │ │
│ │          ││││││    │ │
│ └──────────┼┼┼┼┼┼────┘ │
└────────────┴┴┴┴┴┴──────┘
                             

Now i need to limit the viewport area until the new screen arrives:

xrandr --output eDP-1 --mode 1920x1080 --fb 960x1080 --transform 1,0,0,0,1,0,0,0,1

• eDP-1 is my laptop display name. you can find that using "xrandr"
• 1920x1080 is the actual resolution
• 960x1080 is the expected viewport size

Result:

┌────────────┬┬┬┬┬┬──────┐   
│ ┌temrinal┐ ││││││      │   
│ │        │ ││││││      │   
│ │        │ ││││││      │   
│ │        │ ││││││      │   
│ │        │ ││││││      │   
│ │        │ ││││││      │   
│ └────────┘ ││││││      │   
└────────────┴┴┴┴┴┴──────┘