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[GH-ISSUE #1033] Volume control doesn't work for my Dell monitor #620

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opened 2026-05-05 06:23:14 -06:00 by gitea-mirror · 4 comments

gitea-mirror commented

2026-05-05 06:23:14 -06:00

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Originally created by @kishore-squareup on GitHub (May 12, 2022).
Original GitHub issue: https://github.com/MonitorControl/MonitorControl/issues/1033

Before opening the issue, have you...?

Searched for existing issues
Looked through the wiki
Updated MonitorControl to the latest version (if applicable)

Describe the bug

I have MacOs Monterey, and have connected to my dell S3221QS. I have DDC enabled on my monitor. When I try to adjust the volume using the sliders, nothing happens.

Steps to reproduce

Connect monitor to mac
Set the audio output to HDMI
Adjust volume using the sliders in Monitor control app

Expected behavior

Adjusting the volume sliders to change the monitor's volume

Anything else?

I have tried the m1ddc tool, nothing happens with that.
./m1ddc display 2 get volume returns 110
./m1ddc display 2 set volume 80 doesn't change the volume

Environment Information (please complete the following information)

- macOS version: Monterey
- Mac model:Macbook pro M1 max
- MonitorControl version: 4.0.2 Build 6965
- Monitor(s): Dell S3221QS
- Apple Silicon/M1 (yes or no): yes

Originally created by @kishore-squareup on GitHub (May 12, 2022). Original GitHub issue: https://github.com/MonitorControl/MonitorControl/issues/1033 ### Before opening the issue, have you...? - [X] Searched for existing issues - [X] Looked through [the wiki](https://github.com/MonitorControl/MonitorControl/wiki) - [X] Updated MonitorControl to the latest version (if applicable) ### Describe the bug I have MacOs Monterey, and have connected to my dell S3221QS. I have DDC enabled on my monitor. When I try to adjust the volume using the sliders, nothing happens. ### Steps to reproduce 1. Connect monitor to mac 2. Set the audio output to HDMI 3. Adjust volume using the sliders in Monitor control app ### Expected behavior Adjusting the volume sliders to change the monitor's volume ### Anything else? I have tried the m1ddc tool, nothing happens with that. `./m1ddc display 2 get volume` returns 110 `./m1ddc display 2 set volume 80` doesn't change the volume ### Environment Information (please complete the following information) ```markdown - macOS version: Monterey - Mac model:Macbook pro M1 max - MonitorControl version: 4.0.2 Build 6965 - Monitor(s): Dell S3221QS - Apple Silicon/M1 (yes or no): yes ```

gitea-mirror

2026-05-05 06:23:14 -06:00

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gitea-mirror commented

2026-05-05 06:23:19 -06:00

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@calonye commented on GitHub (May 12, 2022):

me too~

macOS 版本：Monterey
Mac 型号：Macbook pro 15 2019
MonitorControl 版本：4.0.2 Build 6965
-显示器：DELL U2520D
Apple Silicon/M1（是或否）：否

@calonye commented on GitHub (May 12, 2022): me too~ - macOS 版本：Monterey - Mac 型号：Macbook pro 15 2019 - MonitorControl 版本：4.0.2 Build 6965 -显示器：DELL U2520D - Apple Silicon/M1（是或否）：否

gitea-mirror commented

2026-05-05 06:23:22 -06:00

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@Zane0227 commented on GitHub (May 13, 2022):

macOS version: Monterey
Mac model:Mac mini M1
MonitorControl version: 4.0.2 Build 6965
Monitor(s): Dell U2720QM
Apple Silicon/M1 (yes or no): yes

@Zane0227 commented on GitHub (May 13, 2022): - macOS version: Monterey - Mac model:Mac mini M1 - MonitorControl version: 4.0.2 Build 6965 - Monitor(s): Dell U2720QM - Apple Silicon/M1 (yes or no): yes

gitea-mirror commented

2026-05-05 06:23:25 -06:00

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@the0neyouseek commented on GitHub (May 13, 2022):

Hi @kishore-squareup

Are you using the HDMI port of your macbook pro ?
If so, you're not using DDC control as this not possible with this port. Please see this discussion about it here https://github.com/MonitorControl/MonitorControl/discussions/750

If not, your monitor may simply not support volume ddc control and since you tried with m1ddc and it did not work that may be it

@the0neyouseek commented on GitHub (May 13, 2022): Hi @kishore-squareup Are you using the HDMI port of your macbook pro ? If so, you're not using DDC control as this not possible with this port. Please see this discussion about it here https://github.com/MonitorControl/MonitorControl/discussions/750 If not, your monitor may simply not support volume ddc control and since you tried with m1ddc and it did not work that may be it

gitea-mirror commented

2026-05-05 06:23:27 -06:00

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@kishore-squareup commented on GitHub (May 16, 2022):

Yes, I have connected to the monitor using the HDMI port on the laptop. Thanks for the link, I see that this is not supported on M1 pro and Max.

@kishore-squareup commented on GitHub (May 16, 2022): Yes, I have connected to the monitor using the HDMI port on the laptop. Thanks for the link, I see that this is not supported on M1 pro and Max.