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ddcutil: add page (#7275)
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# ddcutil
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> Control the settings of connected displays via DDC/CI.
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> This command requires the kernel module `i2c-dev` to be loaded. See also: `modprobe`.
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> More information: <https://www.ddcutil.com>.
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- List all compatible displays:
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`ddcutil detect`
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- Change the brightness (option 0x10) of display 1 to 50%:
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`ddcutil --display {{1}} setvcp {{10}} {{50}}`
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- Increase the contrast (option 0x12) of display 1 by 5%:
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`ddcutil -d {{1}} setvcp {{12}} {{+}} {{5}}`
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- Read the settings of display 1:
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`ddcutil -d {{1}} getvcp {{ALL}}`
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