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Old 21st June 2012
sw2wolf sw2wolf is offline
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Join Date: Mar 2012
Location: China
Posts: 133
Default No sound on my FreeBSD box

$uname -a
FreeBSD mybsd.zsoft.com 9.0-RELEASE FreeBSD 9.0-RELEASE #0: Tue Jan  3 07:15:25 UTC 2012     
root@obrian.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC  i386

Mixer vol      is currently set to  75:75
Mixer pcm      is currently set to  75:75
Mixer speaker  is currently set to  75:75
Mixer line     is currently set to  75:75
Mixer mic      is currently set to   0:0
Mixer cd       is currently set to  75:75
Mixer rec      is currently set to  75:75
Mixer igain    is currently set to   0:0
Mixer line1    is currently set to  75:75
Mixer phin     is currently set to   0:0

$pciconf -lv | grep -i audio
    device     = '82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) AC'97 Audio Controller'
    subclass   = audio
    subclass   = audio

$dmesg | grep -i audio
pci1: <multimedia, audio> at device 0.0 (no driver attached)

$dmesg -a | grep -i pcm0
pcm0: <Intel ICH4 (82801DB)> port 0xe000-0xe0ff,0xe400-0xe43f mem 0xde081000-0xde0811ff,0xde082000-0xde0820ff irq 17 at device 31.5 on pci0
pcm0: <Avance Logic ALC101 AC97 Codec>

$cat /dev/sndstat 
FreeBSD Audio Driver (newpcm: 32bit 2009061500/i386)
Installed devices:
pcm0: <Intel ICH4 (82801DB)> (play/rec) default
It seems ok but i indeed cannot hear anything . Meanwhile the sound is OK using XP on the same box. so the hardware shouldnot have any problem.

when i playing mp3 using mpc, the irq 17 indeed occurs:
 [COvmstat -i
 interrupt total rate
 irq1: atkbd0 2740 3
 irq12: psm0 26212 30
 irq14: ata0 4831 5
 irq15: ata1 24 0
 irq16: uhci0+ 909 1
 irq17: pcm0 23239 26
 irq21: rl0 905 1
 cpu0:timer 155696 178
 Total 214556 246DE]
Any suggestion is appreciated !
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