Using Command Line to Set Microphone Mute Unmutes the Dell P3424WEB Display Speaker

Summary: This article provides information about why using command line (CLI) to set microphone mute for the display unmutes the display speaker.

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Symptoms

The display speaker may be unmuted when using Dell Display and Peripheral Manager for macOS (DDPM Mac) command line to set the display microphone to mute. The issue occurs after running the /Microphone mute command line.

Before running the /Microphone mute command line, the On-Screen Display (OSD) for the P3424WEB shows below:

  • Speaker: Mute
  • Microphone: Unmute

Before executing the Microphone mute command line 

After running the /Microphone mute command line, the OSD for the P3424WEB shows below:

  • Speaker: Unmute
  • Microphone: Mute

After executing the Microphone mute command line 

Affected Monitor:

  • Dell P3424WEB

Affected Software:

  • Dell Display and Peripheral Manager for macOS Version 1.3.2 and later

Cause

This is due to the display firmware. The display firmware does not corporate well with the CLI setting from the DDPM Mac.

Resolution

Always set the Microphone and Speaker mute/unmute status in pair.

  • When setting the microphone mute and the speaker unmute:
    • Set the microphone mute by DDPM CLI Command:
      ./DDPM /Microphone mute
    • Set the speaker unmute by DDPM CLI Command:
      ./DDPM /Speaker unmute
  • When setting the microphone mute and the speaker mute:
    • Set the microphone mute by DDPM CLI Command:
      ./DDPM /Microphone mute
    • Set the speaker mute by DDPM CLI Command:
      ./DDPM /Speaker mute

Affected Products

Dell Display and Peripheral Manager, Dell P3424WEB
Article Properties
Article Number: 000263750
Article Type: Solution
Last Modified: 22 Apr 2025
Version:  5
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