On the recordRead 9 Oct 202618 facts
ddcci
On the record
- Capabilities query
- The -c option queries the monitor's DDC/CI capabilities string.bhuvanchandradv.github.io · read 9 Oct 2026
- Compatibility limit
- The page says the Mitsubishi Diamond Pro 2060u does not support capabilities requests.github.com · read 9 Oct 2026
- Control discovery
- The -d option queries controls 0 through 255 and checks their validity, with -f available to override the validity check.bhuvanchandradv.github.io · read 9 Oct 2026
- Control names
- The page says symbolic control names are based on Samsung SyncMaster 173T functionality and may be incorrect for other monitors.bhuvanchandradv.github.io · read 9 Oct 2026
- Controls
- It can query available monitor controls and read or write a specified control, including brightness.bhuvanchandradv.github.io · read 9 Oct 2026
- EDID query
- The -e option queries monitor EDID at I2C address 0x50.bhuvanchandradv.github.io · read 9 Oct 2026
- Installation
- The maker's page links to ZIP and tar.gz source downloads and to the GitHub repository.bhuvanchandradv.github.io · read 9 Oct 2026
- Known limitation
- The README says the Mitsubishi Diamond Pro 2060u does not support capability requests.github.com · read 9 Oct 2026
- License
- The repository README describes the program as GPL-licensed.github.com · read 9 Oct 2026
- License and author
- The repository README says the program is GPLed and written by Oleg I. Vdovikin.github.com · read 9 Oct 2026
- Monitor compatibility
- The maker says symbolic control names are based on Samsung SyncMaster 173T functionality and may be incorrect for other monitors.bhuvanchandradv.github.io · read 9 Oct 2026
- Monitor controls
- The page lists controls including brightness, contrast, input source, speaker volume, and power.bhuvanchandradv.github.io · read 9 Oct 2026
- Monitor data
- The tool can query monitor EDID at I2C address 0x50 and DDC/CI capabilities at address 0x37.bhuvanchandradv.github.io · read 9 Oct 2026
- Purpose
- ddcci is a command-line tool for communicating with monitors through the DDC/CI interface.github.com · read 9 Oct 2026
- Read and write controls
- The -r option selects a control to read or write, and -w supplies the value to write.bhuvanchandradv.github.io · read 9 Oct 2026
- Samsung support
- The -S option sends a Samsung DDC/CI enable command, which the page says some Samsung monitors seem to require.bhuvanchandradv.github.io · read 9 Oct 2026
- Save settings
- The -s option sends a DDC/CI command to save adjustments made with the write option.github.com · read 9 Oct 2026
- Support
- The maker says they accept patches and directs users to inspect the tool if it hangs or does not work.bhuvanchandradv.github.io · read 9 Oct 2026
