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1 file changed, 52 insertions
set-resolution.sh(file created)
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| 1 | + | #!/bin/bash | |
| 2 | + | ######################################################################### | |
| 3 | + | # # | |
| 4 | + | # Set display resolution # | |
| 5 | + | # # | |
| 6 | + | # Author: Anthony Axenov (Антон Аксенов) # | |
| 7 | + | # Version: 1.0 # | |
| 8 | + | # License: WTFPL # | |
| 9 | + | # # | |
| 10 | + | ######################################################################### | |
| 11 | + | # # | |
| 12 | + | # Using this script you can change your display resolution # | |
| 13 | + | # to any one you need. Just adjust some vars below and run script # | |
| 14 | + | # (chmod +x needed). # | |
| 15 | + | # # | |
| 16 | + | ######################################################################### | |
| 17 | + | ||
| 18 | + | # Set display name to work with. You can get it via 'xrandr --listactivemonitors' | |
| 19 | + | display="HDMI-2" | |
| 20 | + | # Set width of this display in px | |
| 21 | + | width=1600 | |
| 22 | + | # Set height of this display in px | |
| 23 | + | height=900 | |
| 24 | + | ||
| 25 | + | # Sometimes cvt and gtf generates different modelines. | |
| 26 | + | # You can play around and look which of them gives best result: | |
| 27 | + | modeline=$(cvt ${width} ${height} | grep "Modeline") | |
| 28 | + | # modeline=$(gtf ${width} ${height} 60 | grep "Modeline") | |
| 29 | + | ||
| 30 | + | # Some important data needed to xrandr: | |
| 31 | + | modename="${width}x${height}_my" | |
| 32 | + | params=$(echo "$modeline" | sed "s|^\s*Modeline\s*\"[0-9x_.]*\"\s*||") | |
| 33 | + | ||
| 34 | + | echo "Set resolution ${width}x${height} on display $display:" | |
| 35 | + | echo "$modename $params" | |
| 36 | + | ||
| 37 | + | # Simple logic: | |
| 38 | + | # 1. Switch display to safe mode which always exists (I believe) to avoid errors | |
| 39 | + | xrandr --output $display --mode 640x480 | |
| 40 | + | # 2. If display aready have our mode -- we must delete it to avoid errors | |
| 41 | + | if $(xrandr | grep -q "$modename"); then | |
| 42 | + | # 2.1. Detach mode from display | |
| 43 | + | xrandr --delmode $display $modename | |
| 44 | + | # 2.2. Remove mode itself | |
| 45 | + | xrandr --rmmode $modename | |
| 46 | + | fi | |
| 47 | + | # 3. Create new mode with freshly generated parameters | |
| 48 | + | xrandr --newmode $modename $params | |
| 49 | + | # 4. Attach mode to our display | |
| 50 | + | xrandr --addmode $display $modename | |
| 51 | + | # 5. Switch display to this mode immidiately | |
| 52 | + | xrandr --output $display --mode $modename | |
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