[GH-ISSUE #225] Brightness Only Changes on one of two Identical Monitors #174

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opened 2026-05-05 05:19:46 -06:00 by gitea-mirror · 1 comment

gitea-mirror commented

2026-05-05 05:19:46 -06:00

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Originally created by @glumb on GitHub (May 19, 2020).
Original GitHub issue: https://github.com/MonitorControl/MonitorControl/issues/225

I have two Z24iG2 and one Z27 connected to my Mac. The brightness however only changes on one (every time the same) of the Z24iG2. The onscreen brightness control is shown on the correct monitor though.

The not changing monitor is connected via a thunderbolt dock -> display Port. Maybe that's the issue here.

Originally created by @glumb on GitHub (May 19, 2020). Original GitHub issue: https://github.com/MonitorControl/MonitorControl/issues/225 I have two Z24iG2 and one Z27 connected to my Mac. The brightness however only changes on one (every time the same) of the Z24iG2. The onscreen brightness control is shown on the correct monitor though. <img width="244" alt="image" src="https://user-images.githubusercontent.com/3062564/82291601-94037a00-99a9-11ea-985a-5d4ddbdeae1e.png"> <img width="789" alt="image" src="https://user-images.githubusercontent.com/3062564/82291794-ecd31280-99a9-11ea-9cb5-ef5e30423069.png"> The not changing monitor is connected via a thunderbolt dock -> display Port. Maybe that's the issue here.