Comment 40 for bug 210865

after an upgrade i have sound only in the login session but no sound when start. no sound in control panel, rhythmbox, pidgin, etc

some information:

kernel 2.6.28-11-generic

00:1b.0 Audio device: Intel Corporation 82801H (ICH8 Family) HD Audio Controller (rev 02)
 Subsystem: Dell Device 022f
 Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
 Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
 Latency: 0, Cache Line Size: 64 bytes
 Interrupt: pin A routed to IRQ 21
 Region 0: Memory at fe9fc000 (64-bit, non-prefetchable) [size=16K]
 Capabilities: <access denied>
 Kernel driver in use: HDA Intel
 Kernel modules: snd-hda-intel

---------------------------------

cat /proc/asound/devices
  2: : timer
  3: : sequencer
  4: [ 0- 0]: digital audio playback
  5: [ 0- 0]: digital audio capture
  6: [ 0- 3]: digital audio playback
  7: [ 0] : control

---------------------------------

aplay -L
front:CARD=Intel,DEV=0
    HDA Intel, STAC92xx Analog
    Front speakers
surround40:CARD=Intel,DEV=0
    HDA Intel, STAC92xx Analog
    4.0 Surround output to Front and Rear speakers
surround41:CARD=Intel,DEV=0
    HDA Intel, STAC92xx Analog
    4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=Intel,DEV=0
    HDA Intel, STAC92xx Analog
    5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=Intel,DEV=0
    HDA Intel, STAC92xx Analog
    5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=Intel,DEV=0
    HDA Intel, STAC92xx Analog
    7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
hdmi:CARD=Intel,DEV=0
    HDA Intel, INTEL HDMI
    HDMI Audio Output
null
    Discard all samples (playback) or generate zero samples (capture)

---------------------------------

cat /dev/sndstat
Sound Driver:3.8.1a-980706 (ALSA v1.0.18rc3 emulation code)
Kernel: Linux nostromo 2.6.28-11-generic #41-Ubuntu SMP Wed Apr 8 04:38:53 UTC 2009 i686
Config options: 0

Installed drivers:
Type 10: ALSA emulation

Card config:
HDA Intel at 0xfe9fc000 irq 21

Audio devices:
0: STAC92xx Analog (DUPLEX)

Synth devices: NOT ENABLED IN CONFIG

Midi devices: NOT ENABLED IN CONFIG

Timers:
31: system timer

Mixers:
0: SigmaTel STAC9228