github-starred/MonitorControl

Fork 0

mirror of https://github.com/MonitorControl/MonitorControl.git synced 2026-05-15 14:15:55 -06:00

[GH-ISSUE #1042] Samsung LC34G55T volume control is not working #623

New issue

Closed

opened 2026-05-05 06:23:29 -06:00 by gitea-mirror · 7 comments

gitea-mirror commented

2026-05-05 06:23:29 -06:00

Owner

Originally created by @Delitants on GitHub (May 19, 2022).
Original GitHub issue: https://github.com/MonitorControl/MonitorControl/issues/1042

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

Samsung LC34G55T volume control is not working. Period.

Expected behavior

So volume to change

Anything else?

There is no DDC settings in the monitor menu

Environment Information (please complete the following information)

- macOS version: 11.6
- Mac model: Intel
- MonitorControl version: 4.0.2
- Monitor(s): Samsung LC34G55T
- Monitor Cable(s)/Connection(s): HDMI
- Apple Silicon/M1 (yes or no): no

Originally created by @Delitants on GitHub (May 19, 2022). Original GitHub issue: https://github.com/MonitorControl/MonitorControl/issues/1042 ### 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 Samsung LC34G55T volume control is not working. Period. ### Expected behavior So volume to change ### Anything else? There is no DDC settings in the monitor menu ### Environment Information (please complete the following information) ```markdown - macOS version: 11.6 - Mac model: Intel - MonitorControl version: 4.0.2 - Monitor(s): Samsung LC34G55T - Monitor Cable(s)/Connection(s): HDMI - Apple Silicon/M1 (yes or no): no ```

gitea-mirror

2026-05-05 06:23:29 -06:00

closed this issue
added the
monitor Issue
label

gitea-mirror commented

2026-05-05 06:23:35 -06:00

Author

Owner

@the0neyouseek commented on GitHub (May 20, 2022):

Hi @Neolo
Just reading quickly it doesn't seems like the LC34G55T has integrated speakers ? Do you wish to control you mac internal speakers ?

@the0neyouseek commented on GitHub (May 20, 2022): Hi @Neolo Just reading quickly it doesn't seems like the LC34G55T has integrated speakers ? Do you wish to control you mac internal speakers ?

gitea-mirror commented

2026-05-05 06:23:37 -06:00

Author

Owner

@Delitants commented on GitHub (May 20, 2022):

It has audio jack output for external speakers. Volume is controlled by monitor button only.

@Delitants commented on GitHub (May 20, 2022): It has audio jack output for external speakers. Volume is controlled by monitor button only.

gitea-mirror commented

2026-05-05 06:23:41 -06:00

Author

Owner

@jperkin commented on GitHub (Jul 14, 2022):

I'm seeing the same with my Samsung LF32TU87, though in this case I'm connected over Thunderbolt, and have an M1.

The display controls work ok, though I have to use "Software (gamma, forced)", otherwise it only starts dimming the screen at around 60%. However the audio controls do nothing, even though the icon shows up and is adjusting as expected, the output volume through the speakers remains unchanged.

This is all with the latest 4.1.0.

@jperkin commented on GitHub (Jul 14, 2022): I'm seeing the same with my Samsung LF32TU87, though in this case I'm connected over Thunderbolt, and have an M1. The display controls work ok, though I have to use "Software (gamma, forced)", otherwise it only starts dimming the screen at around 60%. However the audio controls do nothing, even though the icon shows up and is adjusting as expected, the output volume through the speakers remains unchanged. This is all with the latest 4.1.0.

gitea-mirror commented

2026-05-05 06:23:44 -06:00

Author

Owner

@x-magic commented on GitHub (Jul 30, 2022):

The display controls work ok, though I have to use "Software (gamma, forced)", otherwise it only starts dimming the screen at around 60%. However the audio controls do nothing, even though the icon shows up and is adjusting as expected, the output volume through the speakers remains unchanged.

I'm using Dell U4320Q and have the same issue - if the display is connected via DP or USB-C alt mode directly, DDC works for both picture and sound. But if connected via a Thunderbolt dock, only software control works. DDC can still be detected however, just controls won't work anymore.

Maybe there should be a separate issue with Thunderbolt dock users? I assume DDC simply doesn't work through a dock.

@x-magic commented on GitHub (Jul 30, 2022): > The display controls work ok, though I have to use "Software (gamma, forced)", otherwise it only starts dimming the screen at around 60%. However the audio controls do nothing, even though the icon shows up and is adjusting as expected, the output volume through the speakers remains unchanged. I'm using Dell U4320Q and have the same issue - if the display is connected via DP or USB-C alt mode directly, DDC works for both picture and sound. But if connected via a Thunderbolt dock, only software control works. DDC can still be detected however, just controls won't work anymore. Maybe there should be a separate issue with Thunderbolt dock users? I assume DDC simply doesn't work through a dock.

gitea-mirror commented

2026-05-05 06:23:47 -06:00

Author

Owner

@txoof commented on GitHub (Aug 7, 2022):

Similar issue using a Dell U2723QE over a display port connection. The monitor has no internal speakers.
Setup:

M1 Mac Mini Monterey 12.5
Display Port Connection to U2723QE
Powered speakers connected via 2.5mm jack

Symptoms:

Output volume does not follow adjustments made via keyboard or MonitorControl app.
Display dimming works as expected
Volume control overlay appears and works as expected, when using F10-F12
Volume slider in menu bar appears and can be adjusted

I think the U2723QE may have some sort of dock internally as it has a KVM switching capability so this may be related to @x-magic 's problem.

@txoof commented on GitHub (Aug 7, 2022): Similar issue using a Dell U2723QE over a display port connection. The monitor has no internal speakers. Setup: - M1 Mac Mini Monterey 12.5 - Display Port Connection to U2723QE - Powered speakers connected via 2.5mm jack Symptoms: - Output volume does not follow adjustments made via keyboard or MonitorControl app. - Display dimming works as expected - Volume control overlay appears and works as expected, when using F10-F12 - Volume slider in menu bar appears and can be adjusted I think the U2723QE may have some sort of dock internally as it has a KVM switching capability so this may be related to @x-magic 's problem.

gitea-mirror commented

2026-05-05 06:23:49 -06:00

Author

Owner

@samugem commented on GitHub (Sep 8, 2022):

I have same issue with my Samsung S27HG5x when using usb c dock. If I use only usb c-hdmi adapter all works perfectly.

@samugem commented on GitHub (Sep 8, 2022): I have same issue with my Samsung S27HG5x when using usb c dock. If I use only usb c-hdmi adapter all works perfectly.

gitea-mirror commented

2026-05-05 06:23:51 -06:00

Author

Owner

@waydabber commented on GitHub (Sep 21, 2022):

Many displays do not properly support volume control over DDC. If brightness control works properly (not only the bottom 50% which indicates that DDC control is not working at all, either because of the use of the built-in HDMI port or lack of display support) and volume control does not, then there is nothing to do on the app side, but the display's firmware is at fault.

@waydabber commented on GitHub (Sep 21, 2022): Many displays do not properly support volume control over DDC. If brightness control works properly (not only the bottom 50% which indicates that DDC control is not working at all, either because of the use of the built-in HDMI port or lack of display support) and volume control does not, then there is nothing to do on the app side, but the display's firmware is at fault.

gitea-mirror referenced this issue

2026-05-05 07:05:42 -06:00

[PR #624] [MERGED] Change alternate brightness keys option to default to true #1136