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[GH-ISSUE #1047] volume control is not working on samsung smart monitor M8 #625

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opened 2026-05-05 06:23:53 -06:00 by gitea-mirror · 7 comments

gitea-mirror commented

2026-05-05 06:23:53 -06:00

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Originally created by @Phryxos on GitHub (May 23, 2022).
Original GitHub issue: https://github.com/MonitorControl/MonitorControl/issues/1047

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

Volume & contrast controls are not working on my display : Controls of Monitor Control look like they're acting perfectly fine, but do not actually change at all the volume nor the contrast.

My display (smart Monitor M8) is connected on USB-C (thunderbolt) port .
I've only one display connected, with speakers, mic & camera embedded in display.

Expected behavior

just expect to manage volume with same effect as shown in Monitor Control dashboard

Anything else?

No response

Environment Information (please complete the following information)

- macOS version:12.4 Monterey
- Mac model:MAc Studio M1 Max (2022)
- MonitorControl version: 4.1
- Monitor(s):Samsung  Smart Monitor M8 
- Monitor Cable(s)/Connection(s):usb C (thunderbolt/Display Port)
- Apple Silicon/M1 (yes or no):yes

Originally created by @Phryxos on GitHub (May 23, 2022). Original GitHub issue: https://github.com/MonitorControl/MonitorControl/issues/1047 ### 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 Volume & contrast controls are not working on my display : Controls of Monitor Control look like they're acting perfectly fine, but do not actually change at all the volume nor the contrast. My display (smart Monitor M8) is connected on USB-C (thunderbolt) port . I've only one display connected, with speakers, mic & camera embedded in display. ### Expected behavior just expect to manage volume with same effect as shown in Monitor Control dashboard ### Anything else? _No response_ ### Environment Information (please complete the following information) ```markdown - macOS version:12.4 Monterey - Mac model:MAc Studio M1 Max (2022) - MonitorControl version: 4.1 - Monitor(s):Samsung Smart Monitor M8 - Monitor Cable(s)/Connection(s):usb C (thunderbolt/Display Port) - Apple Silicon/M1 (yes or no):yes ```

gitea-mirror

2026-05-05 06:23:53 -06:00

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gitea-mirror commented

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

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@waydabber commented on GitHub (May 24, 2022):

Hi there,

Does brightness control work or only the bottom 50% of the scale does anything (if so then that is only software adjustment, not DDC control).
Can you control the display using m1ddc or the latest beta of BetterDummy? If not then there might be some kind of display. incompatibility.

@waydabber commented on GitHub (May 24, 2022): Hi there, - Does brightness control work or only the bottom 50% of the scale does anything (if so then that is only software adjustment, not DDC control). - Can you control the display using m1ddc or the [latest beta of BetterDummy](https://github.com/waydabber/BetterDummy/releases/tag/v1.2.3-beta)? If not then there might be some kind of display. incompatibility.

gitea-mirror commented

2026-05-05 06:24:03 -06:00

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@Phryxos commented on GitHub (May 24, 2022):

Hi,
thanks a lot for this quick feedback.
-unfortunately, brightness control works only for the bottom 50%
-just tried betterdummy latest beta : same issue , no control of the volume; only bottom 50% for brightness + screen resolution do work well.
I'll contact Samsung too, to know if there is a way to activate DDC on this display, if this is the issue. it's curious for a display that is really targetting Macbook & Mac studio users, including for Camera & Audio. they should keep a way to control it, but ...

@Phryxos commented on GitHub (May 24, 2022): Hi, thanks a lot for this quick feedback. -unfortunately, brightness control works only for the bottom 50% -just tried betterdummy latest beta : same issue , no control of the volume; only bottom 50% for brightness + screen resolution do work well. I'll contact Samsung too, to know if there is a way to activate DDC on this display, if this is the issue. it's curious for a display that is really targetting Macbook & Mac studio users, including for Camera & Audio. they should keep a way to control it, but ...

gitea-mirror commented

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

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@waydabber commented on GitHub (May 24, 2022):

You might want to check for a DDC/CI toggle in the monitor OSD (but I don't think Samsungs have one). I don't have any other idea. You can try m1ddc and see if it gives an actual error or not. If you have a Windows PC around, you can also try some apps like Monitorian and see if that works.

@waydabber commented on GitHub (May 24, 2022): You might want to check for a DDC/CI toggle in the monitor OSD (but I don't think Samsungs have one). I don't have any other idea. You can try [m1ddc](https://github.com/waydabber/m1ddc) and see if it gives an actual error or not. If you have a Windows PC around, you can also try some apps like Monitorian and see if that works.

gitea-mirror commented

2026-05-05 06:24:11 -06:00

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@stewartbryson commented on GitHub (Jun 4, 2022):

Any update @Phryxos? I'm having the same issue, and I'm trying to decide whether to return the monitor or not.

@stewartbryson commented on GitHub (Jun 4, 2022): Any update @Phryxos? I'm having the same issue, and I'm trying to decide whether to return the monitor or not.

gitea-mirror commented

2026-05-05 06:24:14 -06:00

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@kevinwinsper commented on GitHub (Jun 4, 2022):

Same issue on the predecessor of the m8, the samsung m7 monitor. I'm connecting via USB-C (DisplayPort).

@kevinwinsper commented on GitHub (Jun 4, 2022): Same issue on the predecessor of the m8, the samsung m7 monitor. I'm connecting via USB-C (DisplayPort).

gitea-mirror commented

2026-05-05 06:24:16 -06:00

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@Phryxos commented on GitHub (Jun 4, 2022):

Any update @Phryxos? I'm having the same issue, and I'm trying to decide whether to return the monitor or not.

Hi,
I've tried several tools, as various parameters on the display... still doesn't work. Looks silly, but it actually seems that Samsung is blocking the DDC/CI protocol on smart monitors, with no way to activate it... I've contacted Samsung yesterday to know about possible software update on their side. Expecting their reply ..

@Phryxos commented on GitHub (Jun 4, 2022): > Any update @Phryxos? I'm having the same issue, and I'm trying to decide whether to return the monitor or not. Hi, I've tried several tools, as various parameters on the display... still doesn't work. Looks silly, but it actually seems that Samsung is blocking the DDC/CI protocol on smart monitors, with no way to activate it... I've contacted Samsung yesterday to know about possible software update on their side. Expecting their reply ..

gitea-mirror commented

2026-05-05 06:24:18 -06:00

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@waydabber commented on GitHub (Jun 14, 2022):

Let us know if there is any response from them! I'll convert this one into a discussion as this comes up from time-to-time and might be a good place to collect info about these displays.

@waydabber commented on GitHub (Jun 14, 2022): Let us know if there is any response from them! I'll convert this one into a discussion as this comes up from time-to-time and might be a good place to collect info about these displays.