[UPDATE] RFC: snd_hda(4) -- Intel High Definition Audio driver

[Kevin Kramer]

i have tinkered a bit with this and i'm getting very loud output. i've 
got the /us/sbin/mixer set to 0:0

using gzine with it's mixer/amplifier set to 0. if i move the gxine 
amplifier setting to 1.0 and the gxine volume to 1.0, i get what i would 
expect. but when i move the volume back to 0.0, it does not reduce. the 
volume changes do change the /usr/sbin/mixer settings as expected. now 
with the gxine volume still at 0.0, the default gxine amplifier setting 
was 100, now when i go to 10.0 it is too loud for my laptop. i was using 
the hacked hdac.ko driver prior to this and gxine worked fine.

i almost blew my laptop (Latitude D820) speakers when the mixer was at 75:75

here is my info

uname -a
FreeBSD roddick.centtech.com 6.1-RELEASE FreeBSD 6.1-RELEASE #0: Sun Jun 
25 06:27:43 CDT 2006     root@:/usr/obj/usr/src/sys/RODDICK  i386

pciconf -lv | grep -B 4 multimedia
   subclass = PCI-PCI

pcm0 at pci0:27:0: class=0x040300 card=0x01cc1028 chip=0x27d88086 rev=0x01 
hdr=0x00

   vendor   = 'Intel Corporation'

   device   = '82801G (ICH7 Family) High Definition Audio'

   class    = multimedia


sysctl hw.snd.verbose=2 ; cat /dev/sndstat

FreeBSD Audio Driver (newpcm)

Installed devices:

pcm0: <Intel 82801G High Definition Audio Controller> at memory 
0xdfffc000 irq 21 kld snd_hda [20060907_002] (1p/1r/0v channels duplex 
default)

       [pcm0:play:0:dsp0.0]: spd 22050/48000, fmt 0x10000010, flags 
0x00000000, 0x00000010

       interrupts 0, underruns 0, ready 0 
[b:16384/8192/2|bs:131072/2048/64]

       {userland} -> feeder_root(0x10000010) -> feeder_rate(22050 -> 
48000) -> {hardware}

       [pcm0:record:0:dsp0.1]: spd 22050/48000, fmt 0x10000010, flags 
0x00000000, 0x00000010

       interrupts 0, overruns 0, hfree 16384, sfree 131072 
[b:16384/8192/2|bs:131072/2048/64]

       {hardware} -> feeder_root(0x10000010) -> feeder_rate(48000 -> 
22050) -> {userland}

sysctl hw.snd

hw.snd.report_soft_formats: 1

hw.snd.targetirqrate: 32

hw.snd.verbose: 2

hw.snd.maxautovchans: 0

hw.snd.unit: 0

hw.snd.pcm0.buffersize: 16384

hw.snd.pcm0.vchans: 0

/usr/sbin/mixer

Mixer vol      is currently set to   0:0

Mixer speaker  is currently set to   0:0

Mixer mic      is currently set to   0:0

Mixer rec      is currently set to   0:0

Recording source: mic


i don' have a hint.pcm.0.softpcmvol sysctl 

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

Kevin Kramer
Sr. Systems Administrator
512.418.5725
Centaur Technology, Inc.
www.centtech.com



Ariff Abdullah wrote the following on 09/11/06 01:07:
> On Sun, 10 Sep 2006 13:16:34 +0200
> Søren Schmidt <sos at freebsd.org> wrote:
>   
>> Joel Dahl wrote:
>>     
>>> We've made significant progress with the snd_hda(4) driver during
>>> the last week (sound is perfect on my HP NX7400, for example) and
>>> a lot of credit must go to ariff@ who's been debugging the hell
>>> out of a couple of systems lately.
>>>
>>> The current status seems to be that several people still have
>>> problems with the driver though, so I'd like to stress two things:
>>>
>>> 1.  Make sure that you always have the latest source code from
>>> http://people.freebsd.org/~ariff/HDA/ since the code is updated on
>>>
>>> daily basis (the directory is hidden by the index file, so date,
>>> size etc does not reflect the true nature of the files there).
>>>
>>> 2.  Join #freebsd-azalia @ freenode and describe your problem. 
>>> Email is a good way to communicate, but discussing bug reports and
>>> testing patches in real-time on IRC is a lot more efficient.
>>>   
>>>       
>> OK, with sources as of now I have no change in behavior, that is
>> sound  still goes silent if I touch any mixer devices, and I get a
>> highpitched  tone together with sound on line out, line-in and
>> mic-in works fine as  outputs so I use one of those still.
>>
>>     
> For now, here is a little workaround: set hint.pcm.0.softpcmvol=1
> (reload the module) and there you go. At least, you have controllable
> "pcm" mixer volume. The issue is under investigation.
>
>   
>> Attached debug output as wanted...
>>
>>     
> Thanks.
>
>   
>> -Søren
>>
>>
>>     
>
>
> --
> Ariff Abdullah
> FreeBSD
>