snd_hda peculiarities

[Mark]

--- On Wed, 12/30/09, Richard L. Mace <macerl at telkomsa.net> wrote:

> From: Richard L. Mace <macerl at telkomsa.net>
> Subject: snd_hda peculiarities
> To: freebsd-questions at freebsd.org
> Date: Wednesday, December 30, 2009, 8:45 AM
> I recently installed FreeBSD 8.0
> (amd64) on my laptop (HP 8510w) and most 
> things are working. However, a minor annoyance is that I
> only get sound if I 
> manually load snd_hda via:
> 
> # kldload snd_hda
> 
> i.e., after booting. If I place the following in
> /boot/loader.conf
> 
> snd_hda_load="YES"
> 
> I get no sound, even though the driver seems to load and
> cat /dev/sndstat 
> gives
> ----------------------------------------------------------------------------------------------------------------------
> FreeBSD Audio Driver (newpcm: 64bit 2009061500/amd64)
> Installed devices:
> pcm0: <HDA Analog Devices AD1981HD PCM #0 Analog> at
> cad 0 nid 1 on hdac0 kld 
> snd_hda [MPSAFE] (1p:1v/1r:1v channels duplex default)
> pcm1: <HDA Analog Devices AD1981HD PCM #1 Digital> at
> cad 0 nid 1 on hdac0 kld 
> snd_hda [MPSAFE] (1p:1v/0r:0v channels simplex)
> ------------------------------------------------------------------------------------------------------------------------
> 
> Googling, I found this page: 
> 
> http://lists.freebsd.org/pipermail/freebsd-bugs/2009-June/035677.html
> 
> Which reports precisely the behaviour I am experiencing. No
> fix or workaround 
> is suggested.
> 
> Has anyone with similar hardware managed to get this driver
> working? Any 
> workarounds to my problem? My audio hardware is...
> 
> $pciconf -lv 
> <stuff omitted>
> hdac0 at pci0:0:27:0:      class=0x040300
> card=0x30c5103c chip=0x284b8086 
> rev=0x03 hdr=0x00        
>     vendor     = 'Intel
> Corporation'             
>                
>                
>               
>     device     = 'Intel audio
> controller embedded with the 82801H chipset ( 
> ICH8 chipset ) (82801H)'         
>                
>                
>                
>                
>                
>   
>     class      = multimedia 
>                
>                
>                
>                
>    
>     subclass   = HDA 
> 
> And I am using
> $ uname -a
> FreeBSD belenos 8.0-RELEASE FreeBSD 8.0-RELEASE #0: Sat Nov
> 21 15:02:08 UTC 
> 2009     root at mason.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC 
> amd64
> 
> Many thanks
> -Richard
> 

Try adding sound_load="YES" to the loader.conf HTH