[GH-ISSUE #1135] "Sync brightness changes from Built-in and Apple displays" seems not work for me. #669

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opened 2026-05-05 06:28:28 -06:00 by gitea-mirror · 1 comment
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Originally created by @Lotus-95 on GitHub (Aug 12, 2022).
Original GitHub issue: https://github.com/MonitorControl/MonitorControl/issues/1135

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I turn on the "Sync brightness changes from Built-in and Apple displays", but the brightness seems not sync between apple and build-in displays. But the slider adjusts brightness works.

Originally created by @Lotus-95 on GitHub (Aug 12, 2022). Original GitHub issue: https://github.com/MonitorControl/MonitorControl/issues/1135 ### Before opening the issue, have you...? - [X] Searched for existing issues ### Discussion I turn on the "Sync brightness changes from Built-in and Apple displays", but the brightness seems not sync between apple and build-in displays. But the slider adjusts brightness works.
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@waydabber commented on GitHub (Aug 26, 2022):

The feature meant to synchronize only system induced changes (like the ambient light sensor, the touch bar or the macOS native brightness slider). If you change the built in display brightness in MonitorControl manually, it is intentionally not synchronized. Only the change (delta) is synchronized, not the absolute brightness values/percentages.

<!-- gh-comment-id:1228632411 --> @waydabber commented on GitHub (Aug 26, 2022): The feature meant to synchronize only system induced changes (like the ambient light sensor, the touch bar or the macOS native brightness slider). If you change the built in display brightness in MonitorControl manually, it is intentionally not synchronized. Only the change (delta) is synchronized, not the absolute brightness values/percentages.
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Reference: github-starred/MonitorControl#669
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