I've an Asus Z92V, I am running Ubuntu 12.10 and since I installed Ubuntu on this notebook the audio keep crackling and popping continuously. Moreover the volume bar on gnome-shell panel keep jumping from low volume to high volume continuously. This is indifferently through speakers and headphones...it's an unbearable and annoying problem!!! Since it's a common problem of Intel-HDA-audio I've found a lot of solutions and hints around web, but nothing has solved my problem...

This is the output from lspci -v | grep -A7 -i "audio":

00:1b.0 Audio device: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) High Definition Audio Controller (rev 04)
Subsystem: ASUSTeK Computer Inc. Asus A6VC
Flags: bus master, fast devsel, latency 0, IRQ 41
Memory at febfc000 (64-bit, non-prefetchable) [size=16K]
Capabilities: <access denied>
Kernel driver in use: snd_hda_intel
Kernel modules: snd-hda-intel

I tried to mute / unmute all mixer channels (via alsamixer), but it didn't change anything.

Please help me, guys... Thanks

P.S. output from sudo lshw -c multimedia:

   description: Audio device
   product: 82801FB/FBM/FR/FW/FRW (ICH6 Family) High Definition Audio Controller
   vendor: Intel Corporation
   physical id: 1b
   bus info: pci@0000:00:1b.0
   version: 04
   width: 64 bits
   clock: 33MHz
   capabilities: pm msi pciexpress bus_master cap_list
   configuration: driver=snd_hda_intel latency=0
   resources: irq:41 memory:febfc000-febfffff
  • 1
    Maybe this helps askubuntu.com/questions/138266/… – Misery Apr 6 '13 at 18:25
  • Thank you Misery, I've added that line in my alsa-base.conf and now sound from speakers is working fine!!! But sadly, now headphones audio is mute, why??? – Balez Apr 18 '13 at 17:01
  • Did you connect headphones to the same plug as speakers? I mean: disconnected speakers and connected headphones in the same place? – Misery Apr 20 '13 at 5:23
  • No, I use internal speakers (it's a notebook)...anyway yes, I connected headphones in the right input... – Balez Apr 20 '13 at 20:31
  • 2
    Hi Balez! Welcome to AskUbuntu! Please add your solution as an answer and accept it. Answering your own questions is highly encouraged here to document the solution for others. – bntser Apr 21 '13 at 20:29

A possible solution is disabling "auto-mute" in alsamixer. It is used when the "switch-to-headphone-and-back-again" bug occurs (in high volumes mainly).

First, open your terminal, or press:


Then, type and hit "enter":

$ alsamixer

This screen will show up:

Alsa mixer screen in terminal

Use the right arrow until you select "Auto-Mute"

Then, press the down arrow to set it do "Disable" (see the text above it).

That's it.


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