[GH-ISSUE #1245] Monitor BenQ GW2750H #720

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opened 2026-05-05 06:34:53 -06:00 by gitea-mirror · 2 comments

gitea-mirror commented

2026-05-05 06:34:53 -06:00

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Originally created by @peminator on GitHub (Dec 8, 2022).
Original GitHub issue: https://github.com/MonitorControl/MonitorControl/issues/1245

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

Brightness controls works, volume controls appear only to work (meaning i can see the volume conrol and change its value), but the real volume on monitor is not changed. Tested on Windows machine sunin gsame hdmi cable, volme changing works)

Expected behavior

installed freshly downloaded version, changed volume, did not change the volume

Anything else?

No response

Environment Information (please complete the following information)

- macOS version: 12.6.1 Monterey 
- Mac model: Macbook (12", Early 2016)
- MonitorControl version: 4.1.0
- Monitor(s): BenQ GW2750H
- Monitor Cable(s)/Connection(s): MacBook usbc -> dock with pd,1xUsb,hdmi port -> monitor
- Apple Silicon/M1 (yes or no): no

Originally created by @peminator on GitHub (Dec 8, 2022). Original GitHub issue: https://github.com/MonitorControl/MonitorControl/issues/1245 ### 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 Brightness controls works, volume controls appear only to work (meaning i can see the volume conrol and change its value), but the real volume on monitor is not changed. Tested on Windows machine sunin gsame hdmi cable, volme changing works) ### Expected behavior installed freshly downloaded version, changed volume, did not change the volume ### Anything else? _No response_ ### Environment Information (please complete the following information) ```markdown - macOS version: 12.6.1 Monterey - Mac model: Macbook (12", Early 2016) - MonitorControl version: 4.1.0 - Monitor(s): BenQ GW2750H - Monitor Cable(s)/Connection(s): MacBook usbc -> dock with pd,1xUsb,hdmi port -> monitor - Apple Silicon/M1 (yes or no): no ```

gitea-mirror closed this issue

2026-05-05 06:34:56 -06:00

gitea-mirror commented

2026-05-05 06:34:59 -06:00

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Owner

@bestlufeng commented on GitHub (Dec 10, 2022):

I have the same phenomenon in my Redmi 4K monitor, it work with DDC mode

macOS version: 12.6.1 Monterey
Mac model: macbook m1 pro 14
MonitorControl version: 4.1.0
Monitor(s): Redmi 4K
Monitor Cable(s)/Connection(s): typc by display mode
Apple Silicon/M1 (yes or no): yes

@bestlufeng commented on GitHub (Dec 10, 2022): I have the same phenomenon in my Redmi 4K monitor, it work with DDC mode - macOS version: 12.6.1 Monterey - Mac model: macbook m1 pro 14 - MonitorControl version: 4.1.0 - Monitor(s): Redmi 4K - Monitor Cable(s)/Connection(s): typc by display mode - Apple Silicon/M1 (yes or no): yes

gitea-mirror commented

2026-05-05 06:35:03 -06:00

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Owner

@waydabber commented on GitHub (Jan 11, 2023):

@peminator - are you sure DDC brightness control fully works, not only the software dimming part of the scale (by default 0-50%)? if so, then DDC volume should work as well. Other possibility is that the display does not support DDC volume control (many displays fail with this). Windows does not use DDC to control volume but simply alters the digital audio level via its software mixer (macOS does not do that).

@waydabber commented on GitHub (Jan 11, 2023): @peminator - are you sure DDC brightness control fully works, not only the software dimming part of the scale (by default 0-50%)? if so, then DDC volume should work as well. Other possibility is that the display does not support DDC volume control (many displays fail with this). Windows does not use DDC to control volume but simply alters the digital audio level via its software mixer (macOS does not do that).