[GH-ISSUE #271] Acer X34P Sound Volume change does nothing, while contrast and Brightness work well #212

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opened 2026-05-05 05:25:20 -06:00 by gitea-mirror · 7 comments
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Originally created by @wojciechczyz on GitHub (Jul 30, 2020).
Original GitHub issue: https://github.com/MonitorControl/MonitorControl/issues/271

Originally assigned to: @waydabber on GitHub.

Checklist

Describe the issue
Acer X34P Sound Volume change does nothing, while contrast and Brightness work well.

Expected behavior
Changing volume should control the monitor volume

Additional context
Connected using Thunderbotlt 3 to Display Port adapter

Environment Information (please complete the following information):

  • macOS version: Latest released Catalina 10.15.6
  • MonitorControl version: Latest released 2.0.0
  • Monitor(s): X34P
  • Mac model: Mac Book Pro 2018
  • Monitor Cable(s)/Connection(s): (e.g. DisplayPort) Thunderbotlt 3 to Display Port adapter
Originally created by @wojciechczyz on GitHub (Jul 30, 2020). Original GitHub issue: https://github.com/MonitorControl/MonitorControl/issues/271 Originally assigned to: @waydabber on GitHub. **Checklist** <!-- Before you submit your issue, please make sure to check the following boxes by putting an x in the [ ] (don't: [x ], [ x], do: [x]) --> - [x] I have searched for existing issues - [x] I have looked through [the Monitor Troubleshooting wiki](https://github.com/MonitorControl/MonitorControl/wiki/Monitor-Troubleshooting) - [x] I have updated MonitorControl to the latest version **Describe the issue** Acer X34P Sound Volume change does nothing, while contrast and Brightness work well. **Expected behavior** Changing volume should control the monitor volume **Additional context** Connected using Thunderbotlt 3 to Display Port adapter **Environment Information (please complete the following information):** - macOS version: Latest released Catalina 10.15.6 - MonitorControl version: Latest released 2.0.0 - Monitor(s): X34P - Mac model: Mac Book Pro 2018 - Monitor Cable(s)/Connection(s): (e.g. DisplayPort) Thunderbotlt 3 to Display Port adapter
gitea-mirror 2026-05-05 05:25:20 -06:00
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@wojciechczyz commented on GitHub (Oct 22, 2020):

I believe this is monitor firmware bug, reported it as well in acer communities:
https://community.acer.com/en/discussion/620010/control-sound-volume-in-monitor-x34p-from-windows-mac-via-ddc-with-tool-such-as-monitorcontrol#latest

<!-- gh-comment-id:714416319 --> @wojciechczyz commented on GitHub (Oct 22, 2020): I believe this is monitor firmware bug, reported it as well in acer communities: https://community.acer.com/en/discussion/620010/control-sound-volume-in-monitor-x34p-from-windows-mac-via-ddc-with-tool-such-as-monitorcontrol#latest
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@vincentcox commented on GitHub (Jul 30, 2021):

Any fix available?

<!-- gh-comment-id:889788392 --> @vincentcox commented on GitHub (Jul 30, 2021): Any fix available?
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@wojciechczyz commented on GitHub (Jul 30, 2021):

Hi,Please open case directly with Acer support, we need enough votes/pressure to fix this.Cheers!On Jul 30, 2021 12:08 PM, Vincent Cox @.***> wrote:
Any fix available?

—You are receiving this because you authored the thread.Reply to this email directly, view it on GitHub, or unsubscribe.

<!-- gh-comment-id:889819829 --> @wojciechczyz commented on GitHub (Jul 30, 2021): Hi,Please open case directly with Acer support, we need enough votes/pressure to fix this.Cheers!On Jul 30, 2021 12:08 PM, Vincent Cox ***@***.***> wrote: Any fix available? —You are receiving this because you authored the thread.Reply to this email directly, view it on GitHub, or unsubscribe.
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@vincentcox commented on GitHub (Jul 30, 2021):

Thanks for the advice, but they’ll never going to update firmware of an 5+ years old monitor (in my case the acer X34a).

https://eqmac.app/ Worked for me.

I prefer this project and app (ui and design), but the other app can be used as free as well and has it working for me.

No hard feelings towards this, I love this project but in my very specific case that other app is my only working solution.

On 30 Jul 2021, at 13:08, wojciechczyz @.***> wrote:


Hi,Please open case directly with Acer support, we need enough votes/pressure to fix this.Cheers!On Jul 30, 2021 12:08 PM, Vincent Cox @.***> wrote:
Any fix available?

—You are receiving this because you authored the thread.Reply to this email directly, view it on GitHub, or unsubscribe.

You are receiving this because you commented.
Reply to this email directly, view it on GitHub, or unsubscribe.

<!-- gh-comment-id:889825155 --> @vincentcox commented on GitHub (Jul 30, 2021): Thanks for the advice, but they’ll never going to update firmware of an 5+ years old monitor (in my case the acer X34a). https://eqmac.app/ Worked for me. I prefer this project and app (ui and design), but the other app can be used as free as well and has it working for me. No hard feelings towards this, I love this project but in my very specific case that other app is my only working solution. > On 30 Jul 2021, at 13:08, wojciechczyz ***@***.***> wrote: > >  > Hi,Please open case directly with Acer support, we need enough votes/pressure to fix this.Cheers!On Jul 30, 2021 12:08 PM, Vincent Cox ***@***.***> wrote: > Any fix available? > > —You are receiving this because you authored the thread.Reply to this email directly, view it on GitHub, or unsubscribe. > — > You are receiving this because you commented. > Reply to this email directly, view it on GitHub, or unsubscribe.
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@wojciechczyz commented on GitHub (Jul 30, 2021):

Were you able to control audio volume on Mac with this other app?Thanks!On Jul 30, 2021 1:19 PM, Vincent Cox @.***> wrote:

Thanks for the advice, but they’ll never going to update firmware of an 5+ years old monitor (in my case the acer X34a).

https://eqmac.app/ Worked for me.

I prefer this project and app (ui and design), but the other app can be used as free as well and has it working for me.

No hard feelings towards this, I love this project but in my very specific case that other app is my only working solution.

On 30 Jul 2021, at 13:08, wojciechczyz @.***> wrote:



Hi,Please open case directly with Acer support, we need enough votes/pressure to fix this.Cheers!On Jul 30, 2021 12:08 PM, Vincent Cox @.***> wrote:

Any fix available?

—You are receiving this because you authored the thread.Reply to this email directly, view it on GitHub, or unsubscribe.

You are receiving this because you commented.

Reply to this email directly, view it on GitHub, or unsubscribe.

—You are receiving this because you authored the thread.Reply to this email directly, view it on GitHub, or unsubscribe.

<!-- gh-comment-id:889837774 --> @wojciechczyz commented on GitHub (Jul 30, 2021): Were you able to control audio volume on Mac with this other app?Thanks!On Jul 30, 2021 1:19 PM, Vincent Cox ***@***.***> wrote: Thanks for the advice, but they’ll never going to update firmware of an 5+ years old monitor (in my case the acer X34a). https://eqmac.app/ Worked for me. I prefer this project and app (ui and design), but the other app can be used as free as well and has it working for me. No hard feelings towards this, I love this project but in my very specific case that other app is my only working solution. > On 30 Jul 2021, at 13:08, wojciechczyz ***@***.***> wrote: > >  > Hi,Please open case directly with Acer support, we need enough votes/pressure to fix this.Cheers!On Jul 30, 2021 12:08 PM, Vincent Cox ***@***.***> wrote: > Any fix available? > > —You are receiving this because you authored the thread.Reply to this email directly, view it on GitHub, or unsubscribe. > — > You are receiving this because you commented. > Reply to this email directly, view it on GitHub, or unsubscribe. —You are receiving this because you authored the thread.Reply to this email directly, view it on GitHub, or unsubscribe.
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@vincentcox commented on GitHub (Jul 30, 2021):

@wojciechczyz it's not adjusting the volume on the screen itself, but the master out volume to the screen. Entirely different things, i know, but in my case it was sufficient. I just put the volume of my screen on 60% and adjust the master out to the screen if needed.

<!-- gh-comment-id:889914567 --> @vincentcox commented on GitHub (Jul 30, 2021): @wojciechczyz it's not adjusting the volume on the screen itself, but the master out volume to the screen. Entirely different things, i know, but in my case it was sufficient. I just put the volume of my screen on 60% and adjust the master out to the screen if needed.
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@waydabber commented on GitHub (Aug 21, 2021):

Hi, with displays that has problems with volume control, I recommend eqMac or SoundSource (these are software solutions and do not control the amplifier inside the display). Since there is no much we can do with this on MonitorControl's side, I'll close this issue for now. Please feel free to comment anyway if you feel that we can be of any help with this! Thank you!

<!-- gh-comment-id:903141855 --> @waydabber commented on GitHub (Aug 21, 2021): Hi, with displays that has problems with volume control, I recommend eqMac or SoundSource (these are software solutions and do not control the amplifier inside the display). Since there is no much we can do with this on MonitorControl's side, I'll close this issue for now. Please feel free to comment anyway if you feel that we can be of any help with this! Thank you!
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Reference: github-starred/MonitorControl#212
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