Meget lav lyd (snd_ich)

From: Joachim Bondo (none@bsd--bondo.net.lh.bsd-dk.dk)
Date: Wed 02 Feb 2005 - 10:19:28 CET

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Subject: Meget lav lyd (snd_ich)
From: Joachim Bondo <none@bsd--bondo.net.lh.bsd-dk.dk>
To: bsd-dk@bsd-dk.dk
Date: Wed, 02 Feb 2005 01:19:28 -0800

Kære alle

Jeg er langsomt ved at få FreeBSD 5.3 til at understøtte min nyindkøbte
SONY Vaio VGN-T150 (subnotebook), og turen er kommet til lydkortet.

Lydkortet genkendes, og der kommer lyd ud - bare ikke særlig meget! Selv
ved maksimale mixer-værdier (hvor lyden forvrænges til ulidelighed), er
lyden kun lige hørbar.

Google har ikke bragt mig tættere på en løsning. Er der nogen, der har
en ide til hvad det kan være?

På forhånd tak,
Joachim

Her er lidt output:

$ dmesg | grep pcm
pcm0: <Intel ICH4 (82801DB)> port 0x18c0-0x18ff,0x1c00-0x1cff mem
0xe0100800-0xe01008ff,0xe0100c00-0xe0100dff irq 9 at device 31.5 on pci0
pcm0: [GIANT-LOCKED]
pcm0: <Analog Devices AD1981B AC97 Codec>

$ cat /dev/sndstat
FreeBSD Audio Driver (newpcm)
Installed devices:
pcm0: <Intel ICH4 (82801DB)> at io 0x1c00, 0x18c0 irq 9 bufsz 16384 kld
snd_ich (1p/1r/0v channels duplex default)

$ pciconf -vl
pcm0@pci0:31:5: class=0x040100 card=0x81c0104d chip=0x24c58086 rev=0x03
hdr=0x00 vendor = 'Intel Corporation'
    device = '82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) AC'97 Audio
Controller'
    class = multimedia
    subclass = audio

$ mixer
Mixer vol is currently set to 80:80
Mixer pcm is currently set to 100:100
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 0:0
Mixer ogain is currently set to 80:80
Mixer line1 is currently set to 75:75
Mixer phin is currently set to 0:0
Mixer phout is currently set to 0:0
Recording source: mic

Jeg loader modulet i /boot/loader.conf:
snd_ich_load="YES"

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