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[Morten Breum <881340@xxxxxxxxxxxxxxxxxx>]

I also noticed the described behavior since upgrading to 11.10.
I have searched high and low and found this bug - and also https://help.ubuntu.com/community/HdaIntelSoundHowto in which I found that adding a line to /etc/modprobe.d/alsa-base.conf
options snd-hda-intel model=eeepc-p701
made the volume controls work well on my eee-machine.
Perhaps you can also work around the issue by setting the model parameter manually...

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https://bugs.launchpad.net/bugs/881340

Title:
  master volume does not work with snd-hda-intel on HP Elite 8200

Status in “gstreamer0.10” package in Ubuntu:
  Confirmed

Bug description:
  When changing the volume Up and Down in Ubuntu 11.10 oneiric, the audio volume does not change at all. 
  If you, for example use KWin (or alsamixer) to lower the "Master volume" from 100% to 0%, the volume does not decrease at all, until it reaches 0%. There it is muted. Alsamixer, Kwin, volume button, they all make the same behaviour. It is probably a gstreamer problem, or parameter for the kernel module snd-hda-intel.

  If you change the volume of the PCM output sound in alsamixer, it
  works, reflecting the actual value. But master volume doesn't.

  Hardware sound card : 
  cat /proc/asound/cards 
   0 [PCH            ]: HDA-Intel - HDA Intel PCH
                        HDA Intel PCH at 0xfa020000 irq 48

  lspci -k -v -s 00:1b.0
  00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller (rev 04)
          Subsystem: Hewlett-Packard Company Device 1494
          Flags: bus master, fast devsel, latency 0, IRQ 48
          Memory at fa020000 (64-bit, non-prefetchable) [size=16K]
          Capabilities: [50] Power Management version 2
          Capabilities: [60] MSI: Enable+ Count=1/1 Maskable- 64bit+
          Capabilities: [70] Express Root Complex Integrated Endpoint, MSI 00
          Capabilities: [100] Virtual Channel
          Capabilities: [130] Root Complex Link
          Kernel driver in use: HDA Intel
          Kernel modules: snd-hda-intel

  dmidecode :

  System Information
          Manufacturer: Hewlett-Packard
          Product Name: HP Compaq 8200 Elite CMT PC

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