I have a similar problem. There was an email thread about it a few months
ago. Nothing much happened with it because sound occasionally works for me.
Sometime it comes back after a reboot or restart of alsasound, and sometimes if
I leave the machine running a long time if will just start working or just stop
working . . . really weird. I've been running alsaconf a lot and that seem to
get it back most of the time if not I still need to restart alsasound or
reboot.Also, if you haven't run python-updater in a while you should, that
seems to fix a lot a odd behavior.Good luck.dhk----- Original Message
-----From: Florian Philipp Date: Friday, April 22, 2011 10:45 amSubject:
[gentoo-user] HDA ATI SB ALC892 sometimes no soundTo: Gentoo User List > Hi
list!> > I've recently bought a Gigabyte GA-880GMA-UD2H board (AM3, integrated>
Radeon HD 4200). The problem is, sometimes sound works out-of-> the-box.> Then
I reboot and there is no sound at all. There is no error - > just no> output.
The SPDIF port (which I really need) does not emit any light,> then. Sometimes
after a cold reboot, it works again.> > I've found several threads pointing to
problems with kernel 2.6.32> (solved in 2.6.33, I'm on 2.6.36). Some others
made me wonder if > alsa is> confused by the HDMI output of the graphics card.
I blacklisted> snd_hda_codec_atihdmi and switched driver from fglrx to radeon >
but it> did not change anything. I don't have the means to check whether there>
is any output over HDMI.> > I know that at least Volker has a similar board.
Maybe others as well.> Does someone have a clue what's going on?> > I'll append
some info.> > # aplay -l> **** List of PLAYBACK Hardware Devices ****> card 0:
SB [HDA ATI SB], device 0: ALC892 Analog [ALC892 Analog]> Subdevices: 1/1>
Subdevice #0: subdevice #0> card 0: SB [HDA ATI SB], device 1: ALC892 Digital
[ALC892 Digital]> Subdevices: 1/1> Subdevice #0: subdevice #0> card 1: HDMI
[HDA ATI HDMI], device 3: ATI HDMI [ATI HDMI]> Subdevices: 1/1> Subdevice #0:
subdevice #0> > # aplay -L> null> Discard all samples (playback) or generate
zero samples (capture)> default:CARD=SB> HDA ATI SB, ALC892 Analog>
Default Audio Device> front:CARD=SB,DEV=0> HDA ATI SB, ALC892 Analog>
Front speakers> surround40:CARD=SB,DEV=0> HDA ATI SB, ALC892 Analog> 4.0
Surround output to Front and Rear speakers> surround41:CARD=SB,DEV=0> HDA
ATI SB, ALC892 Analog> 4.1 Surround output to Front, Rear and Subwoofer
speakers> surround50:CARD=SB,DEV=0> HDA ATI SB, ALC892 Analog> 5.0
Surround output to Front, Center and Rear speakers> surround51:CARD=SB,DEV=0>
HDA ATI SB, ALC892 Analog> 5.1 Surround output to Front, Center, Rear and
Subwoofer speakers> surround71:CARD=SB,DEV=0> HDA ATI SB, ALC892 Analog>
7.1 Surround output to Front, Center, Side, Rear and Woofer >
speakersiec958:CARD=SB,DEV=0> HDA ATI SB, ALC892 Digital> IEC958 (S/PDIF)
Digital Audio Output> hdmi:CARD=HDMI> HDA ATI HDMI, ATI HDMI> HDMI Audio
Output> > # lsmod | grep snd> snd_pcm_oss 35117 0> snd_mixer_oss
14707 1 snd_pcm_oss> snd_seq_oss 27452 0> snd_seq_midi_event
5188 1 snd_seq_oss> snd_seq 48669 4
snd_seq_oss,snd_seq_midi_event> snd_seq_device 4861 2
snd_seq_oss,snd_seq> snd_hda_codec_atihdmi 2331 1> snd_hda_codec_realtek
267272 1> snd_hda_intel 19922 0> snd_hda_codec 61484 3>
snd_hda_codec_atihdmi,snd_hda_codec_realtek,snd_hda_intel> snd_pcm
63804 3 > snd_pcm_oss,snd_hda_intel,snd_hda_codecsnd_timer >
17965 2 snd_seq,snd_pcm> snd 50622 10>
snd_pcm_oss,snd_mixer_oss,snd_seq_oss,snd_seq,snd_seq_device,snd_hda_codec_realtek,snd_hda_intel,snd_hda_codec,snd_pcm,snd_timer>
soundcore 5007 1 snd> snd_page_alloc 6713 2
snd_hda_intel,snd_pcm> > # dmesg | grep -i hda> HDA Intel 0000:00:14.2: PCI INT
A -> GSI 16 (level, low) -> IRQ 16> hda_codec: ALC892: BIOS auto-probing.> HDA
Intel 0000:01:05.1: PCI INT B -> GSI 19 (level, low) -> IRQ 19> HDA Intel
0000:01:05.1: setting latency timer to 64> > # lspci -v> 00:14.2 Audio device:
ATI Technologies Inc SBx00 Azalia (Intel > HDA) (rev 40)> Subsystem:
Giga-byte Technology Device a102> Flags: bus master, slow devsel,
latency 32, IRQ 16> Memory at fe024000 (64-bit, non-prefetchable)
[size=16K]> Capabilities: [50] Power Management version 2> Kernel
driver in use: HDA Intel> Kernel modules: snd-hda-intel> > 01:05.0 VGA
compatible controller: ATI Technologies Inc Device 9715> (prog-if 00 [VGA
controller])> Subsystem: Giga-byte Technology Device d000> Flags:
bus master, fast devsel, latency 0, IRQ 18> Memory at d0000000 (32-bit,
prefetchable) [size=256M]> I/O ports at de00 [size=256]> Memory
at fdee0000 (32-bit, non-prefetchable) [size=64K]> Memory at fdd00000
(32-bit, non-prefetchable) [size=1M]> Expansion ROM at [disabled]>
Capabilities: [50] Power Management version 3> Capabilities: [a0] MSI:
Enable- Count=1/1 Maskable- 64bit+> Kernel modules: fglrx> > 01:05.1
Audio device: ATI Technologies Inc RS880 Audio Device > [Radeon HD> 4200]>
Subsystem: Giga-byte Technology Device 960f> Flags: bus master, fast
devsel, latency 0, IRQ 19> Memory at fdefc000 (32-bit, non-prefetchable)
[size=16K]> Capabilities: [50] Power Management version 3>
Capabilities: [a0] MSI: Enable- Count=1/1 Maskable- 64bit+> Kernel
driver in use: HDA Intel> Kernel modules: snd-hda-intel> > > > Thanks in
advance!> Florian Philipp> >
