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14 lines
575 B
Text
14 lines
575 B
Text
ddcutil is a Linux program for querying and changing monitor settings,
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such as brightness and color levels.
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ddcutil primarily uses DDC/CI (Display Data Channel Command Interface)
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to communicate with monitors implementing MCCS (Monitor Control Command
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Set) over I2C. Normally, the video driver for the monitor exposes the
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I2C channel as devices named /dev/i2c-n.
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Use the following commands in order to be able to use ddcutil as a
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regular user:
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# cp /usr/share/ddcutil/data/45-ddcutil-i2c.rules /etc/udev/rules.d
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# groupadd -r i2c
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# usermod -aG i2c your_username_here
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