[GH-ISSUE #61] MonitorControl doesn't work with my monitor #60

Closed
opened 2026-05-05 04:55:07 -06:00 by gitea-mirror · 13 comments
Owner

Originally created by @davidmurr on GitHub (Feb 18, 2019).
Original GitHub issue: https://github.com/MonitorControl/MonitorControl/issues/61

The brightness control (both via keyboard and menu) functions as expected, but the adjusting the audio control, either via keyboard or menu, does not actually alter the volume level output by the monitor. Is this monitor not supported by the library that Monitor Control uses?

MacBook Pro 13" mid-2014
macOS 10.14.2
Dell U3415W connected via DisplayPort

Originally created by @davidmurr on GitHub (Feb 18, 2019). Original GitHub issue: https://github.com/MonitorControl/MonitorControl/issues/61 The brightness control (both via keyboard and menu) functions as expected, but the adjusting the audio control, either via keyboard or menu, does not actually alter the volume level output by the monitor. Is this monitor not supported by the library that Monitor Control uses? MacBook Pro 13" mid-2014 macOS 10.14.2 Dell U3415W connected via DisplayPort
Author
Owner

@bitraft commented on GitHub (Feb 22, 2019):

Dell U3219Q also not work

<!-- gh-comment-id:466243133 --> @bitraft commented on GitHub (Feb 22, 2019): Dell U3219Q also not work
Author
Owner

@emdPL commented on GitHub (Feb 24, 2019):

Same here :( Dell P2715Q.
macOS 10.14.3

btw. Keep going. Great simple app!

<!-- gh-comment-id:466741956 --> @emdPL commented on GitHub (Feb 24, 2019): Same here :( Dell P2715Q. macOS 10.14.3 btw. Keep going. Great simple app!
Author
Owner

@emdPL commented on GitHub (Feb 24, 2019):

AMCoreAudio lib issue.
AMCoreAudio Demo App -> Inspect Device: Display Port -> Output: Channel 1 / 2 volume: N/A :(

<!-- gh-comment-id:466742412 --> @emdPL commented on GitHub (Feb 24, 2019): AMCoreAudio lib issue. AMCoreAudio Demo App -> Inspect Device: Display Port -> Output: Channel 1 / 2 volume: N/A :(
Author
Owner

@m9tdev commented on GitHub (Feb 25, 2019):

Same here.
Dell U3415W over HDMI on macOS 10.14.3

<!-- gh-comment-id:467042598 --> @m9tdev commented on GitHub (Feb 25, 2019): Same here. Dell U3415W over HDMI on macOS 10.14.3
Author
Owner

@mlauria93 commented on GitHub (Mar 18, 2019):

Same problem, but even the brightness FKs are not working.
MacBook Pro 2017
LG 32UD99-W connected via Type C

<!-- gh-comment-id:473813691 --> @mlauria93 commented on GitHub (Mar 18, 2019): Same problem, but even the brightness FKs are not working. MacBook Pro 2017 LG 32UD99-W connected via Type C
Author
Owner

@Fourthbus commented on GitHub (Mar 25, 2019):

same here,
Macbook Pro 2017
Dell P2415Q

<!-- gh-comment-id:476340719 --> @Fourthbus commented on GitHub (Mar 25, 2019): same here, Macbook Pro 2017 Dell P2415Q
Author
Owner

@JoniVR commented on GitHub (May 8, 2019):

AMCoreAudio lib issue.
AMCoreAudio Demo App -> Inspect Device: Display Port -> Output: Channel 1 / 2 volume: N/A :(

This is not the problem, AMCoreAudio is only used to detect a difference between system sound and monitor sound being the default and then allowing you to set the correct one automatically.

It all depends on how well your monitor supports the DDC standard. [more info]

<!-- gh-comment-id:490398797 --> @JoniVR commented on GitHub (May 8, 2019): > AMCoreAudio lib issue. > AMCoreAudio Demo App -> Inspect Device: Display Port -> Output: Channel 1 / 2 volume: N/A :( This is not the problem, `AMCoreAudio` is only used to detect a difference between system sound and monitor sound being the default and then allowing you to set the correct one automatically. It all depends on how well your monitor supports the [DDC](https://en.wikipedia.org/wiki/Display_Data_Channel) standard. [[more info]](https://glenwing.github.io/docs/VESA-EDDC-1.2.pdf)
Author
Owner

@maarten00 commented on GitHub (May 22, 2019):

Same issue here on Dell U2719D over DP (using this adapter) on a MBP 2017
Brightness is working fine.

<!-- gh-comment-id:494664055 --> @maarten00 commented on GitHub (May 22, 2019): Same issue here on Dell U2719D over DP (using [this adapter](https://www.club-3d.com/en/detail/2350/usb_3.1_type_c_to_displayport_1.2/)) on a MBP 2017 Brightness is working fine.
Author
Owner

@the0neyouseek commented on GitHub (May 23, 2019):

Hi everyone,

The app uses DDC to control your monitor(s) and a lot of them does not implement (well) this standard resulting in the inability to control brightness or volume, or to read the current values of this settings for example.

You can check if your monitor is compatible with ddcctl by verifying if you can control volume/brightness with it before opening an issue.

<!-- gh-comment-id:495172244 --> @the0neyouseek commented on GitHub (May 23, 2019): Hi everyone, The app uses [DDC](https://github.com/reitermarkus/DDC.swift) to control your monitor(s) and a lot of them does not implement (well) this standard resulting in the inability to control brightness or volume, or to read the current values of this settings for example. You can check if your monitor is compatible with [ddcctl](kfix/ddcctl) by verifying if you can control volume/brightness with it before opening an issue.
Author
Owner

@JoniVR commented on GitHub (May 23, 2019):

Also, there's a list from another Github repo with some known monitors.
http://www.ddcutil.com/monitor_notes/

<!-- gh-comment-id:495192221 --> @JoniVR commented on GitHub (May 23, 2019): Also, there's a list from another Github repo with some known monitors. http://www.ddcutil.com/monitor_notes/
Author
Owner

@JoniVR commented on GitHub (Feb 25, 2020):

For anyone who runs into this issue in the future, Here's a wiki page with some troubleshooting info:
https://github.com/the0neyouseek/MonitorControl/wiki/Monitor-Troubleshooting

<!-- gh-comment-id:591062717 --> @JoniVR commented on GitHub (Feb 25, 2020): For anyone who runs into this issue in the future, Here's a wiki page with some troubleshooting info: https://github.com/the0neyouseek/MonitorControl/wiki/Monitor-Troubleshooting
Author
Owner

@waydabber commented on GitHub (Aug 20, 2021):

I updated the wiki entry with some info on Apple Silicon.

<!-- gh-comment-id:902964674 --> @waydabber commented on GitHub (Aug 20, 2021): I updated the wiki entry with some info on Apple Silicon.
Author
Owner

@waydabber commented on GitHub (Aug 25, 2021):

I'll close this issue. It was pinned for educational purposes, but the new issue templates already contain the required information so there is no need to have this open.

If there is any issue with the new v3.0.0 release (or above) and the wiki does not help, a display specific issue can be opened. Thank you!

<!-- gh-comment-id:905713145 --> @waydabber commented on GitHub (Aug 25, 2021): I'll close this issue. It was pinned for educational purposes, but the new issue templates already contain the required information so there is no need to have this open. If there is any issue with the new v3.0.0 release (or above) and the wiki does not help, a display specific issue can be opened. Thank you!
Sign in to join this conversation.
No milestone
No project
No assignees
1 participant
Notifications
Due date
The due date is invalid or out of range. Please use the format "yyyy-mm-dd".

No due date set.

Dependencies

No dependencies set.

Reference: github-starred/MonitorControl#60
No description provided.