Hi, Mark,
On Tue, Feb 16, 2010 at 04:20:53PM -0800, Mark Knecht wrote:
> On Tue, Feb 16, 2010 at 6:54 AM, Alan Mackenzie <[email protected]> wrote:
> > Hi, gentoo,
> > I'm trying to get sound to sound on my new Gentoo box, following the
> > "Gentoo Linux ALSA Guide". Everything seems to be working fine, except
> > no sound is coming out of my loudspeakers.
> > I've checked the obvious things: the speakers are plugged in, switched
> > on and connected to the appropriate socket on my motherboard (the light
> > green one).
> > I have drivers for my motherboard's sound chips compiled into my kernel,
> > and they are correctly identified by alsamixer. With alsamixer I've
> > unmuted various things and turned up the volume.
> > madplay appears to play an mp3 file I have. Just that no actual sound
> > comes out.
> > One other strange thing: the titles under the "volume bars" in alsamixer
> > are very different from the ones in the document: Instead of "Master /
> > Headphone / Tone / Bass / Treble / 3D Contr / PCM", I've got " Master /
> > Headphon / Front / Front Mi / Surround / Center / LFE / Side / Line /
> > Mic / Mic Boos / S/PDIF / S/PDIF D / Beep". Why is this? In
> > particular, I'm missing the "PCM" volume bar which the documentation
> > says is so important to unmute.
> > What am I missing here?
> > Thanks in advance!
> > --
> > Alan Mackenzie (Nuremberg, Germany).
> Did you get this worked out yet?
Not yet, no.
> VERY strange that you don't see pcm as a mixer control...
I've got alsamixer 1.0.21. Could it be that it choses its controls
according to the capabilities of the sound card?
> It's a bit hard to say much with so little info but I'll offer a
> couple of things:
> 1) IMO Alsa has never run so well when drivers are compiled into the
> kernel. I do a lot of audio in Linux and have always had the best
> results using modules. I would strongly suggest you give it a try...
Oh deity! I was hoping not to have to do this. I've never used modules
before, since they are (or were) an unnecessary complication, and might
introduce security risks. Maybe I'll have to read up on this.
> 2) Under /proc/asound/card0 (or whatever card you are using if you
> have more than 1) do you see any pcm directories?
# ls /proc/asound/card0
codec#0 id oss_mixer pcm0c pcm0p pcm1p pcm2c
, so yes, I can see some pcm directories.
> 3) Post back a little more info?
> cat /proc/asound/cards
0 [SB ]: HDA-Intel - HDA ATI SB
HDA ATI SB at 0xfbcf8000 irq 16
1 [HDMI ]: HDA-Intel - HDA ATI HDMI
HDA ATI HDMI at 0xfbffc000 irq 19
> aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: SB [HDA ATI SB], device 0: ALC1200 Analog [ALC1200 Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: SB [HDA ATI SB], device 1: ALC1200 Digital [ALC1200 Digital]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: HDMI [HDA ATI HDMI], device 3: ATI HDMI [ATI HDMI]
Subdevices: 1/1
Subdevice #0: subdevice #0
> aplay -L
default:CARD=SB
HDA ATI SB, ALC1200 Analog
Default Audio Device
front:CARD=SB,DEV=0
HDA ATI SB, ALC1200 Analog
Front speakers
surround40:CARD=SB,DEV=0
HDA ATI SB, ALC1200 Analog
4.0 Surround output to Front and Rear speakers
surround41:CARD=SB,DEV=0
HDA ATI SB, ALC1200 Analog
4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=SB,DEV=0
HDA ATI SB, ALC1200 Analog
5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=SB,DEV=0
HDA ATI SB, ALC1200 Analog
5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=SB,DEV=0
HDA ATI SB, ALC1200 Analog
7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
iec958:CARD=SB,DEV=0
HDA ATI SB, ALC1200 Digital
IEC958 (S/PDIF) Digital Audio Output
null
Discard all samples (playback) or generate zero samples (capture)
hdmi:CARD=HDMI
HDA ATI HDMI, ATI HDMI
HDMI Audio Output
> lsmod
Opening /proc/modules: No such file or directory
> Good luck,
Thanks!
> Mark
--
Alan Mackenzie (Nuremberg, Germany).
