[GH-ISSUE #1793] Asus ProArt PA32UCDM - 100% not mapped correctly #989

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opened 2026-05-05 07:00:23 -06:00 by gitea-mirror · 2 comments

gitea-mirror commented

2026-05-05 07:00:23 -06:00

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Originally created by @mkammes on GitHub (Sep 6, 2025).
Original GitHub issue: https://github.com/MonitorControl/MonitorControl/issues/1793

Before opening the issue, have you...?

Searched for existing issues
Read through the Monitor-Troubleshooting Wiki
Updated MonitorControl to the latest version (if applicable)

Describe the issue

In MonitorControl = 100% Brightness translates to "100" in the ProArt PA32UCDM Brightness OSD...while the OSD for Brightness can go to 400. Even if I quit MonitorControl, I need to physically bring up the monitor OSD and manually adjust the brightness setting to anything above 100.

I haven't done any other testing with different color gamuts thus far (only Rec.709 and Native).

Expected behavior

Control brightness through MonitorControl GUI where 100% = 400 on the monitor's brightness OSD, or control the exact brightness value from 1-400 in MonitorControl rather than a percentage.

Anything else?

In this image, you can see MonitorControl is set to 100. This set my monitor to Brightness:100. I then manually adjusted the monitor brightness OSD to 200.

Environment Information (please complete the following information)

- macOS version: 15.3.1
- Mac model: MacBook Pro
- MonitorControl version: 4.3.3
- Monitor(s): Asus ProArt P32UCDM
- Monitor Cable(s)/Connection(s): MBP --> Sonnet Echo 20 Thunderbolt 4 Superdock --> TB4 to Asus Monitor
- Apple Silicon/M1 (yes or no): Yes / M4M ax

Originally created by @mkammes on GitHub (Sep 6, 2025). Original GitHub issue: https://github.com/MonitorControl/MonitorControl/issues/1793 ### Before opening the issue, have you...? - [x] Searched for existing issues - [x] Read through [the Monitor-Troubleshooting Wiki](https://github.com/MonitorControl/MonitorControl/wiki/Monitor-Troubleshooting) - [x] Updated MonitorControl to the latest version (if applicable) ### Describe the issue In MonitorControl = 100% Brightness translates to "100" in the ProArt PA32UCDM Brightness OSD...while the OSD for Brightness can go to 400. Even if I quit MonitorControl, I need to physically bring up the monitor OSD and manually adjust the brightness setting to anything above 100. I haven't done any other testing with different color gamuts thus far (only Rec.709 and Native). ### Expected behavior Control brightness through MonitorControl GUI where 100% = 400 on the monitor's brightness OSD, or control the exact brightness value from 1-400 in MonitorControl rather than a percentage. ### Anything else? In this image, you can see MonitorControl is set to 100. This set my monitor to Brightness:100. I then manually adjusted the monitor brightness OSD to 200. <img width="1662" height="1080" alt="Image" src="https://github.com/user-attachments/assets/0b35c635-865e-4e9a-b370-a0f1cb42b8fa" /> ### Environment Information (please complete the following information) ```markdown - macOS version: 15.3.1 - Mac model: MacBook Pro - MonitorControl version: 4.3.3 - Monitor(s): Asus ProArt P32UCDM - Monitor Cable(s)/Connection(s): MBP --> Sonnet Echo 20 Thunderbolt 4 Superdock --> TB4 to Asus Monitor - Apple Silicon/M1 (yes or no): Yes / M4M ax ```

gitea-mirror closed this issue

2026-05-05 07:00:24 -06:00

gitea-mirror commented

2026-05-05 07:00:29 -06:00

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@waydabber commented on GitHub (Sep 6, 2025):

Hi - you should try to modify the DDC range to 0-400 in the app, maybe that works.

@waydabber commented on GitHub (Sep 6, 2025): Hi - you should try to modify the DDC range to 0-400 in the app, maybe that works. <img width="930" height="846" alt="Image" src="https://github.com/user-attachments/assets/9e2ae978-41d5-47ab-b6e4-140606cec8d2" />

gitea-mirror commented

2026-05-05 07:00:31 -06:00

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@waydabber commented on GitHub (Sep 6, 2025):

I mean...

@waydabber commented on GitHub (Sep 6, 2025): I mean... <img width="842" height="757" alt="Image" src="https://github.com/user-attachments/assets/4c1130e4-45b4-4aa8-a688-8b5479dfdd55" />