[GH-ISSUE #326] Only one monitor of two (same model) can be adjusted. #258

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opened 2026-05-05 05:38:04 -06:00 by gitea-mirror · 1 comment

gitea-mirror commented

2026-05-05 05:38:04 -06:00

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Originally created by @mebemellow on GitHub (Nov 20, 2020).
Original GitHub issue: https://github.com/MonitorControl/MonitorControl/issues/326

Checklist

I have searched for existing issues
I have looked through the Monitor Troubleshooting wiki
I have updated MonitorControl to the latest version

Describe the issue
I use two monitors of exactly the same model (Asus Proart PA24A). On the first one I can adjust the brightness, but when I change to the second one I change the brightness of the other one again. This also happens when I adjust all monitors at the same time. I can only adjust one monitor, its always the same.

Expected behavior
Brightness is adjustable on each selected monitor

Additional context
Could it be that by using the same monitor model both screens get the same ID?
Accordingly, only one could be adjusted.

Environment Information (please complete the following information):

macOS version: 10.15.7
MonitorControl version: 2.1.0
Monitor(s): Asus Proart PA24A
Mac model: MacBook Pro (15-inch, 2018)
Monitor Cable(s)/Connection(s): usb-c to usb-c

Originally created by @mebemellow on GitHub (Nov 20, 2020). Original GitHub issue: https://github.com/MonitorControl/MonitorControl/issues/326 **Checklist**  - [x] I have searched for existing issues - [x] I have looked through [the Monitor Troubleshooting wiki](https://github.com/MonitorControl/MonitorControl/wiki/Monitor-Troubleshooting) - [x] I have updated MonitorControl to the latest version **Describe the issue** I use two monitors of exactly the same model (Asus Proart PA24A). On the first one I can adjust the brightness, but when I change to the second one I change the brightness of the other one again. This also happens when I adjust all monitors at the same time. I can only adjust one monitor, its always the same. **Expected behavior** Brightness is adjustable on each selected monitor **Additional context** Could it be that by using the same monitor model both screens get the same ID? Accordingly, only one could be adjusted. **Environment Information (please complete the following information):** - macOS version: 10.15.7 - MonitorControl version: 2.1.0 - Monitor(s): Asus Proart PA24A - Mac model: MacBook Pro (15-inch, 2018) - Monitor Cable(s)/Connection(s): usb-c to usb-c