External monitors missing DDC/CI brightness control on Linux
External monitors are not detected or their DDC/CI replies are rejected, so no brightness control appears.
Tier II · Emerging Problems that are still building up.
9 public reports · first reported 12 March 2018 · last reported 18 June 2024
What's going wrong
Linux users with external monitors often find that the DDC/CI driver either never detects their display or receives identification replies it rejects, so no brightness control appears at all.
AI-assisted: written with the help of AI from the reports. The idea report has the full summary.
In the idea report
- The full summary.
- The products the 9 reports are about, and how many came each month.
- Related problems.
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