[GH-ISSUE #166] Brightness control only adjust one of two identical monitors #122

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opened 2026-05-05 05:06:28 -06:00 by gitea-mirror · 2 comments

gitea-mirror commented

2026-05-05 05:06:28 -06:00

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Originally created by @karafso on GitHub (Dec 31, 2019).
Original GitHub issue: https://github.com/MonitorControl/MonitorControl/issues/166

I have two identical external monitors connected to my MacBook (Iiyama PL2488H). MonitorControl works fine when just one is plugged in, regardless of which port they are hooked up to. However, when both are connected, MonitorControl can only change brightness on one monitor. The second monitor does show up in the menu, but moving its slider changes the brightness on the first monitor.

Originally created by @karafso on GitHub (Dec 31, 2019). Original GitHub issue: https://github.com/MonitorControl/MonitorControl/issues/166 I have two identical external monitors connected to my MacBook (Iiyama PL2488H). MonitorControl works fine when just one is plugged in, regardless of which port they are hooked up to. However, when both are connected, MonitorControl can only change brightness on one monitor. The second monitor does show up in the menu, but moving its slider changes the brightness on the first monitor. ![image](https://user-images.githubusercontent.com/1497462/71614340-57c2af00-2bab-11ea-8ea2-021fb0daa595.png)

gitea-mirror

2026-05-05 05:06:28 -06:00

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gitea-mirror commented

2026-05-05 05:06:34 -06:00

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@topmankong commented on GitHub (Dec 31, 2019):

I have the same problems, 2 DELL monitors

@topmankong commented on GitHub (Dec 31, 2019): I have the same problems, 2 DELL monitors

gitea-mirror commented

2026-05-05 05:06:37 -06:00

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@JoniVR commented on GitHub (Jan 9, 2020):

This is a duplicate of #49, it's a long standing issue related that happens when you have 2 identical monitors.

@JoniVR commented on GitHub (Jan 9, 2020): This is a duplicate of #49, it's a long standing issue related that happens when you have 2 identical monitors.