[mythtv-users] Weird alsa problem

[Chris Strom]

I really don't know why you wouldn't have the capture-able indicator
above that (any?) channel.  Check permissions on the /dev/sound/*?  Do you
have the correct .asoundrc file?  Are you using snd-emu10k1 (is it
included in the output of lsmod)?  What are you using in
/etc/modules.d/alsa?  How do these compare to the examples on the
http://www.alsa-project.org site for you card?

You've reached the limit of my alsa experience (short ride, eh?), but
hopefully that will point you in the right direction.

Chris


On Wed, Jun 09, 2004 at 01:13:39PM +0100, Tom Wardill wrote:
> I have looked and there is no indication of '-----' or capture anywhere in
> the program. Aumix also doesn't give the boxes indicating which should be
> captured from.
> Not quite sure what's going on, it's the standard ebuild from the gentoo
> site so I don't think it could  be a config problem. 
> 
> -----Original Message-----
> From: mythtv-users-bounces at mythtv.org
> [mailto:mythtv-users-bounces at mythtv.org] On Behalf Of Chris Strom
> Sent: 09 June 2004 12:54
> To: Discussion about mythtv
> Subject: Re: [mythtv-users] Weird alsa problem
> 
> In alsamixer, `------' above a channel indicates that it can be captured
> from.  Is there a `------' above the Line channel?  If so, you should be
> able to select that channel, then hit space to capture from than channel.
> 
> If there is no `------' (or `CAPTUR') above the Line channel, then you
> probably have your alsa mis-configured, in which case, you should check the
> alsa site for details on your card.
> 
> Hope that gives you something to work with,
> 
> Chris
> 
> On Tue, Jun 08, 2004 at 12:19:18PM +0100, Tom Wardill wrote:
> > Hi.
> > Just in the middle of setting my first mythtv box up using Gentoo.
> > Have the program itself up and working fine, but I've hit a strange 
> > problem in ALSA.
> > If I unmute the Line input on my soundcard using alsamixer (SB. 
> > Audigy) then I can here the tv input fine. However, I can't record it. 
> > I've tried using /dev/dsp and anything else I can find that looks 
> > relevant, but all I get through that is silence, if I turn the volume 
> > up really far, I can just about hear the program.
> > This means that my mythtv recordings have no sound, but I'm not quite 
> > sure where the problem lies.
> > I think ALSA is capturing from the wrong source, but I can't find a 
> > way to change it, pressing space on the source in alsamixer does 
> > nothing, I don't get the capture indicator.
> > Following the mythtv guide and doing this:
> > 
> > $ amixer set Master,0 100%,100% unmute $ amixer set Line,0 75%,75% 
> > mute captur $ amixer set Capture,0 100%,100% mute captur $ su # 
> > alsactl store # exit
> > 
> > Breaks on this line:
> > 
> > amixer set Capture,0 100%,100% mute captur
> > amixer: Unable to find simple control 'Capture',0
> > 
> > I can't seem to set the capture source. I'm using the gentoo kernel 
> > 2.6.5-r1 and the latest alsa builds, I've tried both the ebuilds and 
> > the latest source packages from the official website.
> > 
> > Can anyone offer any advice on what the problem might be?
> > I've tied posting on the gentoo forums and googling for a solution, 
> > but I was referred to trying this list.
> > Thanks for any assistance
> > --
> > Tom Wardill