Hi Hari and thanks for your willingness to help.

I'd recommend the following: 
1) Make sure nothing got installed from your attempt to install these drivers, 
"modinfo snd-hda-codec" should *NOT* return any filename with "/updates/" in it
2) https://wiki.ubuntu.com/Audio/InstallingLinuxAlsaDriverModules
3) If this does not work, try again with model=auto
4) If this does not work either, try hda_analyzer, go to node 0x0f and try to 
raise the "amp-out" values. 

Let me know how it goes :-)


** Changed in: alsa-driver (Ubuntu)
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/745402

Title:
  [Realtek ALC260] ALSA test tone not correctly played back on docking
  station external speakers

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