[SLL] Speaking of on-topic...

[Derek Simkowiak]

Kurt> /I switched from the ALSA HDA Intel to the Analog Devices AD1894, and
it started working./
[...]
Jarod> /Not quite sure what you mean there... the ALSA HDA Intel driver is what
should be driving sound, the Analog Devices AD1894 is the actual audio
codec used by this variant of an HDA Intel sound card./


    Is it possible this is an ALSA vs. OSS ("Open Source Sound") driver 
issue?  Sometimes OSS works but not ALSA, or vice versa.

    Perhaps the configuration change Kurt made triggered the loading of 
the OSS sound drivers, thus activating sound.

    Jarod's lsmod command shows that both ALSA and OSS are loaded on his 
system: snd_hda_intel is ALSA, and the snd_pcm_oss is OSS.

Jarod Wilson wrote:
> On Mon, 2008-06-09 at 08:27 -0700, Kurt Buff wrote:
>   
>> On Sun, Jun 8, 2008 at 7:16 PM, Jarod Wilson <jarod at wilsonet.com> wrote:
>>     
>>> On Sat, 2008-06-07 at 13:14 -0700, Kurt Buff wrote:
>>>       
>>>> I've very recently purchased a new Lenovo T61 with SUSE Linux
>>>> Enterprise Desktop 10, SP1, and I'm quite pleased with it so far, with
>>>> one exception - I can't get sound to work.
>>>>
>>>> When I use Helix, or view an online video, I get nothing. I've done
>>>> some investigation, and find the following error messages in
>>>> /var/log/messages:
>>>>
>>>> Jun  7 13:14:00 GrimSqueaker kernel: ALSA
>>>> sound/core/pcm_native.c:2070: snd_pcm_hw_constraints_complete failed
>>>> Jun  7 13:14:00 GrimSqueaker kernel: ALSA
>>>> sound/core/pcm_native.c:1925: BUG? (err >= 0)
>>>>
>>>> I find nothing in google regarding this kind of message, and searching
>>>> both the Lenovo and Novell web sites yeilds nothing either.
>>>>
>>>> Does anyone have hints on where I might start looking to fix this?
>>>>         
>>> The alsa mailing lists are probably the best place to get those messages
>>> decoded. That, and/or you might look at whether or not its fixed w/the
>>> SLED10 SP2 kernel. For what its worth, I have Fedora 9 on a reasonably
>>> new (got it in December) T61, and everything works flawlessly.
>>>       
> [...]
>   
>> After much banging around last night, If found that there were two
>> devices, and that when I switched the device, it worked.
>>
>> I switched from the ALSA HDA Intel to the Analog Devices AD1894, and
>> it started working.
>>     
>
> Not quite sure what you mean there... the ALSA HDA Intel driver is what
> should be driving sound, the Analog Devices AD1894 is the actual audio
> codec used by this variant of an HDA Intel sound card.
>
>
> My own T61:
>
> $ dmesg | less
> [...]
> hda_intel: probe_mask set to 0x1 for device 17aa:20ac
> PCI: Setting latency timer of device 0000:00:1b.0 to 64
> ALSA sound/pci/hda/hda_intel.c:1810: chipset global capabilities =
> 0x4401
> ALSA sound/pci/hda/hda_intel.c:749: codec_mask = 0x3
> ALSA sound/pci/hda/hda_codec.c:2236: hda_codec: model 'thinkpad' is
> selected for config 17aa:0 (Lenovo Thinkpad)
> [...]
>
> $ lsmod |grep snd
> snd_hda_intel         447540  4 
> snd_seq_dummy          11524  0 
> snd_seq_oss            39232  0 
> snd_seq_midi_event     15104  1 snd_seq_oss
> snd_seq                61840  5
> snd_seq_dummy,snd_seq_oss,snd_seq_midi_event
> snd_seq_device         15508  3 snd_seq_dummy,snd_seq_oss,snd_seq
> snd_pcm_oss            52096  0 
> snd_mixer_oss          23296  2 snd_pcm_oss
> snd_pcm                86024  2 snd_hda_intel,snd_pcm_oss
> snd_timer              29584  2 snd_seq,snd_pcm
> snd_page_alloc         16912  2 snd_hda_intel,snd_pcm
> snd_hwdep              16520  1 snd_hda_intel
> snd                    66808  16
> snd_hda_intel,snd_seq_dummy,snd_seq_oss,snd_seq,snd_seq_device,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_timer,snd_hwdep
> soundcore              14864  2 snd
>
>
> And finally, PulseAudio shows my output device as:
>
> ALSA PCM on front:0 (AD198x Analog) via DMA
>
>
>
>