Ubuntu – Headphone Jack has no sense


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Sound comes out of my speakers even when headphones are plugged in

How can I mute the speakers when the headphones are plugged in?

I have searched all over the internet and although there are many threads that discuss this, none has worked for me.

I have tried alsamixer and installing linux-backports-modules-alsa-lucid-generic, but neither worked. The Speakers just wont mute when I plug in the headphones. I had this problem in 11.04 and hoped it would be one of the headaches to go away when I downgraded to Lucid Lynx.

cat /proc/asound/card0/codec#* | grep Codec
Codec: Realtek ALC665
Codec: Intel CougarPoint HDMI

Model Name: Alienware M14xR1 (PS: I am not a gamer so I have no attachment to Windows 🙂 )

$ lspci | grep -i audio
00:1b.0 Audio device: Intel Corporation Cougar Point High Definition Audio Controller (rev 05)
    $ sudo lshw -c sound
           description: Audio device
           product: Cougar Point High Definition Audio Controller
           vendor: Intel Corporation
           physical id: 1b
           bus info: pci@0000:00:1b.0
           version: 05
           width: 64 bits
           clock: 33MHz
           capabilities: pm msi pciexpress bus_master cap_list
           configuration: driver=HDA Intel latency=0
           resources: irq:50 memory:da800000-da803fff

Best Answer

  • Did you see the answers to this question? There are a million ways of wiring these audio chips, so can you please add the model name of your laptop? Also have a look at this bug. You need to find the right model, maybe this list helps.

    Lucid is a year older than your Sandy Bridge laptop, so I guess it would be better if you install 11.04 or wait two months and install 11.10.

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