Bug#599582: [2.6.30 -> 2.6.32 regression] no sound from Fujitsu Pi laptop unless headphones plugged in

[Jonathan Nieder <jrnieder@gmail.com>]

retitle 599582 [2.6.30 -> 2.6.32 regression] no sound from Fujitsu Pi laptop unless headphones plugged in
tags 599582 + moreinfo
quit

Jean-Louis Biasini wrote:

> No sound from the speaker but if I plug a jack into my laptop's
> headphone plug I get the sound from it.
>
> My driver is HDA intel on a pi 1505 fujitsu laptop

Summary of this bug so far:

 - All reporters got no sound unless something is plugged into the
   headphone jack.  When headphones are plugged in, sound only goes
   through the headphones, as you'd hope.

 - Jean-Louis Biasini is using a Fujitsu Pi 1505 laptop.

   A 2.6.32-5-amd64 kernel from 2010-10-09 exhibits the problem.
   A 2.6.35-trunk-amd64 kernel from the same time does not exhibit the problem.

 - Jose Manuel Castroagudin is using a Fujitsu Pi 2515.

   A 2.6.32-5-686 kernel from 2010-10-29 exhibits the problem.
   A 2.6.30 kernel does not.

 - Stas Zytkiewicz is using a Dell Inspiron 15.

   2.6.32-27 exhibits the problem.
   2.6.36 from experimental does not exhibit the problem.

   snd-hda-intel.model=hp-dv5 also avoids trouble.

 - Rafael Varela Pet is using a Fujitsu-Siemens Amilo Pi 1505.

   2.6.32-30 exhibits the problem.
   A 2.6.26-2-amd64 kernel from the same time does not.

Next steps to move this forward:

 1. Please attach output from the alsa-info.sh script with and without
    headphones plugged in.

 2. Trying some kernels between 2.6.32 and 2.6.35 from
    http://snapshot.debian.org/ would help narrow down when the fix
    was introduced.

Thanks again, and sorry for the trouble,
Jonathan