Bug#638659: [linux-2.6] No sound

[Antonio Marcos López Alonso <amlopezalonso@gmail.com>]

> It's not directly related to this message, but in 3.0 the Realtek HDA
> driver was changed to implement auto-mute.  For example, if something is
> plugged into the headphone socket then speaker output (assumed to be
> line-out) should be muted.  Depending on the board configuration, other
> auto-muting may occur.  You may need to disable this feature.
> 
> Ben.

Hi Ben, Jonathan,

Effectively, it seems this new auto-mute feature was the reason of the audio 
gone. KMix was not showing it by default, so I added the new control in 
Properties.

No headphones or similar were plugged in to any audio output, so I suspect 
there must be another issue, maybe some BIOS setting, for this feature to be 
enabled and active by default.

So thank you very much to both of you for your help, it seems this one can be 
closed.

Regards,
Antonio