[GH-ISSUE #229] Only able to control 1 of 2 screens #176

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opened 2026-05-05 05:20:42 -06:00 by gitea-mirror · 1 comment

gitea-mirror commented

2026-05-05 05:20:42 -06:00

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Originally created by @ndnathan on GitHub (May 31, 2020).
Original GitHub issue: https://github.com/MonitorControl/MonitorControl/issues/229

I have two identical BenQ BL2480 238 LED Monitors with built-in speakers / DDC connected to my 2019 13" MacBook Pro with Touch Bar (macOS Catalina 10.15.5) via USB-C to DisplayPort.

I installed the *.dmg as instructed and noticed each displays listed on the dropdown in the Menu Bar. However, both devices control the left screen's brightness and audio each way. I selected the option to 'Change Brightness/Volume for all screens' and tried actively using the other screen when selecting the option to adjust the settings.

Is there something that I am doing incorrectly? My first thought is that there might be an issue using two identical monitors. Thanks in advance for your support and consideration. I really appreciate your commitment to this project and look forward to resolving this issue soon.

Originally created by @ndnathan on GitHub (May 31, 2020). Original GitHub issue: https://github.com/MonitorControl/MonitorControl/issues/229 I have two identical BenQ BL2480 238 LED Monitors with built-in speakers / DDC connected to my 2019 13" MacBook Pro with Touch Bar (macOS Catalina 10.15.5) via USB-C to DisplayPort. I installed the *.dmg as instructed and noticed each displays listed on the dropdown in the Menu Bar. However, both devices control the left screen's brightness and audio each way. I selected the option to 'Change Brightness/Volume for all screens' and tried actively using the other screen when selecting the option to adjust the settings. Is there something that I am doing incorrectly? My first thought is that there might be an issue using two identical monitors. Thanks in advance for your support and consideration. I really appreciate your commitment to this project and look forward to resolving this issue soon.