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Tags: sound   dell   inspiron  
Link: 🔍 See Original Answer on Ask Ubuntu 🔗

URL: https://askubuntu.com/q/1018740
Title: How to activate subwoofer in Inspiron 17r?
ID: /2018/03/24/How-to-activate-subwoofer-in-Inspiron-17r_
Created: March 24, 2018    Edited:  April 1, 2018
Upload: November 24, 2022    Layout:  post
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On this answer: https://askubuntu.com/a/481831/307523, I found this comment I wrote last year: March 5, 2017 - Just to confirm this activates the sub-woofer for the Dell Inspiron 17R 7720 SE in Ubuntu 16.04.

Firstly you will need to install alsa-tools & alsa-tools-gui from either the software center or from terminal.

sudo apt-get install alsa-tools alsa-tools-gui

Open HDAJackRetask

Select the IDT 92HD91BXX codec

Check the “Show unconnected pins” box (the internal speakers do not show as connected)

  1. Remap 0x0d (Internal Speaker, which is your Front side) to Internal speaker.
  2. Remap 0×10 (“Not connected”, which is the subwoofer) to “Internal speaker (LFE)” ```

``` Select “Install boot override” to save the settings to apply at boot time. Reboot. When it comes back, you should have full sound from all speakers.


Note: Option 2. was removed due to new testing by alfC. It used to say:

  1. Remap 0x0f (“Not connected”, which is the under-display speakers) to “Internal speaker”
⇧ strace hwinfo --dump-db 0 does not dump to /var/lib/hardware What does NetworkManager-wait-online.service do?  ⇩