LinuxQuestions.org - no sound with front connector after kernel upgrade....Intel HDA onboard sound

Hi

I am on a sidux aka Debian unstable.
old k vmlinuz-2.6.27-10.slh.1-sidux-686
new k vmlinuz-2.6.28-0.slh.11-sidux-686

On old k and using sidux in live cd mode I had sound in front connectors.
the live cd mode was scratchy sound.

After kernel upgrade, no sound at front

using alsamixer or kmix the settings were initially unchanged ie
front unmuted volume highest

2) but on new k ...I tried something else which puzzles me.

I have 2 headphones one in front and one in back

If I mute the front in the mixer...I lose sound to the back

Nothing I do in the mixer appears to enable sound at front.

Any clues?

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info for the experts

Code:



    $ cat /proc/asound/cards

 0 [Intel          ]: HDA-Intel - HDA Intel

                      HDA Intel at 0xf9ffc000 irq 16



    $ cat /proc/asound/card0/codec#0

Codec: SigmaTel STAC9221 A2



....culled......but includes

Node 0x0a [Pin Complex] wcaps 0x400181: Stereo

  Pincap 0x0000173f: IN OUT HP Detect Trigger ImpSense

    Vref caps: HIZ 50 GRD 80

  Pin Default 0x0221401f: [Jack] HP Out at Ext Front..............THIS looks good

    Conn = 1/8, Color = Green

    DefAssociation = 0x1, Sequence = 0xf

  Pin-ctls: 0x00: VREF_HIZ

  Unsolicited: tag=30, enabled=1

  Connection: 1

    0x02





$ lsmod | grep snd

snd_hda_intel        414132  1

snd_pcm_oss            42368  0

snd_mixer_oss          18688  1 snd_pcm_oss

snd_pcm                76548  2 snd_hda_intel,snd_pcm_oss

snd_page_alloc        12936  2 snd_hda_intel,snd_pcm

snd_hwdep              11268  1 snd_hda_intel

snd_seq_dummy          6788  0

snd_seq_oss            34048  0

snd_seq_midi          10368  0

snd_rawmidi            25344  1 snd_seq_midi

snd_seq_midi_event    11136  2 snd_seq_oss,snd_seq_midi

snd_seq                53552  6 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_seq_midi_event

snd_timer              24712  2 snd_pcm,snd_seq

snd_seq_device        11020  5 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_rawmidi,snd_seq

snd                    58148  12 snd_hda_intel,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_hwdep,snd_seq_oss,snd_rawmidi,snd_seq,snd_timer,snd_seq_device

soundcore              11232  1 snd







$ lspci -nnvv



culled but includes......

00:1b.0 Audio device [0403]: Intel Corporation 82801G (ICH7 Family) High Definit

ion Audio Controller [8086:27d8] (rev 01)

        Subsystem: Elitegroup Computer Systems Device [1019:2633]

        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Step

ping- SERR- FastB2B- DisINTx-

        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort-

<MAbort- >SERR- <PERR- INTx-

        Latency: 0, Cache Line Size: 32 bytes

        Interrupt: pin A routed to IRQ 16

        Region 0: Memory at f9ffc000 (64-bit, non-prefetchable) [size=16K]

        Capabilities: <access denied>

        Kernel driver in use: HDA Intel

        Kernel modules: snd-hda-intel

to repeat....I have sound or can have sound at the back....but I have lost sound at the front.

Any clues as to what to try please?