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I've a laptop (Vaio VPCM13M1E) with ubuntu 14.04 installed. The sound of my laptop speakers works fine, but the sound of my headphones while playing a medium or through internet contains much noise. Although when I capture a screen (Ctrl + PrtSc) the sound is perfect.

Also when I do the Speaker Testing for Headphones in System Settings it is all good

So how can I make sure the audio from files or internet is played according the right settings?

alsa_utils version is 1.0.27.2 and aplay -l gives

card 0: Intel [HDA Intel], device 0: ALC269VB Analog [ALC269VB Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

And lspci -v | grep -A7 -i "audio" shows

  00:1b.0 Audio device: Intel Corporation NM10/ICH7 Family High Definition Audio Controller (rev 01)
        Subsystem: IBM Device 9075
        Flags: bus master, fast devsel, latency 0, IRQ 41
        Memory at feb00000 (64-bit, non-prefetchable) [size=16K]
        Capabilities: <access denied>
        Kernel modules: snd_hda_intel

  00:1c.0 PCI bridge: Intel Corporation NM10/ICH7 Family PCI Express Port 1 (rev 01) (prog-if 00 [Normal decode])

And cat /proc/asound/cards shows:

 0 [Intel          ]: HDA-Intel - HDA Intel
                      HDA Intel at 0xfeb000000 irq 41

Following this bug report, I've added the following lines to /etc/modprobe.d/alsa-base.conf

alias snd-card-0 snd-hda-intel
options snd-card-0 index=0
options snd-hda-intel model=vaio

Rebooted and applied sudo alsa force-reload, but the sound of mediums and through internet keeps containing noise. Any advice?

1 Answer 1

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I eventually used this troubleshooting page for sound, which gives a nice flowchart to rule things out.

flowchart

For me the speaker test speaker-test -c2 -t wav was successful, so I thought it had to do the with the output (ALSA, Pulseaudio, oss, Jack), which I could change while playing a song on repeat using qmmp (sudo apt-get install qmmp), but the real solution for playing was that the plug of my headphones was TOO DEEP in the jack for Firefox, YouTube, Mplayer where the speaker test was working fine no matter how deep the headphones were plugged in.

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