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Created by Sergey Zozulya@sviperz

Unable to disable device nodes

  • PipeWire version: 0.3.51
  • Distribution: Pop!_OS 22.04 LTS
  • Desktop Environment: GNOME 42.0
  • Kernel version: 5.17.5

Description of Problem:

I have a laptop (ASUS ZenBook UX325EA) with no mini-jack socket. However, There are extra input and output devices (perhaps, they are derived internally from the sound card) in the system that produce or capture no sound.

The is a Headphones output that combined with the Speaker output, but has another volume control:

Output_Devices

and there is a Headphones Stereo Microphone that doesn't do anything and capture no sound as a mic:

Input_Devices

The problem is that those phantom output and input have higher priorities as a default devices, so every time I connect or disconnect other devices I have to manually set correct devices in the sound settings. And since they present in the system as ports/nodes and not as a separate devices I don't know what the correct way to solve this issue.

What I've already tried so far:

  • Disable those extra nodes using WirePlumber scripts, e.g.:

    rule_Disable_Headphones_Mic = {
  matches = {
    {
      { "node.nick", "equals", "Headphones Stereo Microphone" },
    },
  },
  apply_properties = {
    ["node.disabled"]    = true,
  },
}

table.insert(alsa_monitor.rules,rule_Disable_Headphones_Mic)

    But this disables all sinks and sources altogether. Don't know what's the reason, maybe this should not work at all or they all are part of a single node. But anyway this approach doesn't work.

  • Set higher priorities for needed sink/source, also using WirePlumber scripts:

    rule_Headphones_Stereo_Microphone_priority = {
  matches = {
    {
      { "node.nick", "equals", "Headphones Stereo Microphone" },
    },
  },
  apply_properties = {
    --["node.disabled"]    = true, -- Disables everything for some reason
    ["priority.session"] = 1600,
    ["priority.driver"]  = 1600,
  },
}

rule_Digital_Microphone_priority = {
  matches = {
    {
      { "node.nick", "equals", "Digital Microphone" },
    },
  },
  apply_properties = {
    ["priority.session"] = 1700,
    ["priority.driver"]  = 1700,
  },
}

rule_Speaker_Headphones_priority = {
  matches = {
    {
      { "node.nick", "equals", "Speaker + Headphones" },
    },
  },
  apply_properties = {
    ["priority.session"] = 700,
    ["priority.driver"]  = 700,
  },
}

rule_HDMI1_priority = {
  matches = {
    {
      { "node.nick", "equals", "HDMI / DisplayPort 1 Output" },
    },
  },
  apply_properties = {
    ["priority.session"] = 800,
    ["priority.driver"]  = 800,
  },
}

table.insert(alsa_monitor.rules,rule_Headphones_Stereo_Microphone_priority)
table.insert(alsa_monitor.rules,rule_Digital_Microphone_priority)

table.insert(alsa_monitor.rules,rule_Speaker_Headphones_priority)
table.insert(alsa_monitor.rules,rule_HDMI1_priority)

    This approach seems to work, but sometimes wrong sinks/sources are selected anyway rendering a sound system to fail again.

Ideally in my opinion would be to:

  • Split the Speaker+Headphones sink and remove the Headphones part from the sound system completely.
  • Remove the Headphones Stereo Microphone from the sound system completely.

I'm not sure if this even feasible, but any help on that would be great.

Actual Results:

Specific ports are not got disabled.

Expected Results:

Specific ports are disabled and not present in the system.

Additional Info (as attachments):

Please let me know if I can provide any additional information.