Re: [gentoo-user] HDA ATI SB ALC892 sometimes no sound

[dhkuhl@optonline.net]

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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> >

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