[linux-audio-user] USB Audio has played but no longer does so.

[Chris Lyon]

Thanks Mark,
It's really nice of you to take the time to help, in what must be a 
fairly frequent occurance.
anyway...

alsaplayer seems like a possible answer.
so typed alsaplayer.... nope su'ed typed alsaplayer nope,
find / -name alsaplayer ... nope...

I've not got alsaplayer :)

goto alsa site download tools/utils
no alsaplayer in there   :(

search on web find alsaplayer   :)
download .bz2

expand  to directory...
cd to directory
type ./configure   :)

type make :(

nas.c audio/audiolib.h: No such file directory.  :(
I have looked in ALL the alsa download files and this file oesn't appear.
Searching on the web reveals the

http://rpmfind.net//linux/RPM/mandrake/10.0/contrib/SRPMS/alsaplayer-0.99.76-1mdk.src.html

but this is for mandrake 10.0 and upon attempting to find the 
esound-devel component their appears to be no relevent Mandrake 
component. Also I do not no the difference between Mandrake & Mandrake 
Cooker.

I don't really mind building from the rpm or performing ./configure make 
, make install dances but I feel that I am going to end up with a rather 
bloated system of slightly incompatable versions if I am not careful.

So how best to proceed?

Chris

ps I got the mouse working on 10.1 which was a bit of a game in 
itself.... :)


Mark Knecht wrote:

> Chris,
>    Sorry that you haven't gotten many answers to this question. Let me 
> take a shot at it. I'm not promising much.
>
> 1) If you get an endless list of devices showing up in 
> /proc/asound/cards then clearly something is very, very wrong. I think 
> that it's hardly worth proceeding further until this gets sorted out, 
> but unfortunately I've never used a USB audio device so I Cannot help 
> there.
>
> 2) Try alsaplayer. I'm not clear if this machine is a desktop or a 
> laptop. If it was an old style desktop and you were trying to play an 
> audio CD then you would normally do this through an audio cable hooked 
> to the sound card. However, since your sound card (working or not) is 
> a USB device you obviously cannot do this. To get around this issue 
> you need to use a CD player that will play the audio digitally across 
> the PCI bus. IIRC xmms will not do this, or at least not without 
> special plugins. alsaplayer will. Since your sound card (working or 
> not) is at the end of a USB cable you need to make sure you are using 
> a player that can communicate. Try alsaplayer.
>
> 3) alsamixer doesn't work with all sound cards/devices, and I'm not 
> sure it works with this one. amixer may or may not, I'm not sure. You 
> could be having trouble simply because the sound card is muted and 
> will stay that way until you find the right mixer. As you said this 
> originally I see you understand the problem. We need someone with more 
> USB experience to pony up the appropriate info.
>
>    Again, I wish I could offer more help. I think it's disappointing 
> that you've written 3 messages and received no public responses. I 
> hope you got more help privately.
>
> With best regards,
> Mark
>
> Chris Lyon wrote:
>
>> I'm sorry that I've obviously phrased this question all wrong.
>> so I'll try to be a little bit more detailed this time.
>>
>> I have now installed Mandrake 10.1 on the machine.
>> and now aplay -l does indeed report the existance of UA-100 card
>> kscd shows all the typical signs of  playing a cd, it lists tracks, 
>> it starts counting when play is pressed,
>> But no sound emerges.
>> amixer reports no mixer elements, or nothing.
>>
>> /proc/asound/cards displays an endless stream of
>> 0 [UA100       ]: USB-Audio - UA - 100
>>                          Roland UA - 100 at usb-0000:00:07.2 - 2, 
>> full speed
>>
>> if I try to select a Device with
>> aplay -D= *****
>> nothing I type in seems to make any sense to it.
>> if I try to list pcm devices to plug into the above line with aplay 
>> -D the results are to say the least incomprehensable.
>>
>> Where do I go next?  This used to work when I installed 9.2 
>> originally but I have been poking & proding for 4 days now and It 
>> still desn't work. ONce again I apologies for the way I present my 
>> questions but I am NOT pestering before trying, I am on a last ditch 
>> attempt to play a CD on a linux box.
>> I won't bore you with my background, but I have a little involvement 
>> in the synth, computing and audio field and yet this is now getting 
>> way beyond a joke.  I have had this playing with Micheal Minns 
>> MMUSAUDIO . However ALSA seems the way to go for all things Audio and 
>> Linux.
>> So how do you check the signal path in a system? and what do you do 
>> if a device appears not to be supported by the mixing facilities?
>>
>> Chris Lyon
>>
>> Chris Lyon wrote:
>>
>>> /proc/asound/cards reports
>>>
>>> 0 [rev20                    ]:VIA686A -VIA 82C686A/B rev20
>>>                                      VIA 82C686A/B rev20 at 0xac00, 
>>> irq 11
>>> 1 [UA100                 ]: USB-Audio - UA-100
>>>                                       Roland UA-100 at usb-00:07.2-2
>>>
>>> So it looks like something is seen but how do I get aplay to play to 
>>> the
>>> UA-100?  The VIA card has alway's reported itself but neither windows,
>>> linux or anything else has ever got any life out of it!
>>>
>>> so do I use the aplay to select the card even thou, aplay -l doesn't
>>> list it?
>>>
>>> Chris
>>>
>>>
>>>
>>> Chris Lyon wrote:
>>>
>>>> Dear all,
>>>>
>>>> Roland UA-100 plugged into PC, usbview detects interface.
>>>>
>>>> aplay -l doesn't report any knowledge of the device.
>>>>
>>>> I believe I have loaded the appropriate modules, snd-usb-audio but 
>>>> the system resolutely refuses to make music as it has before. I 
>>>> would include the appropriate modules.conf files to show but this 
>>>> E-mailing machine and the linux box are not connected and I feel 
>>>> cross reading would be a little error strewn.
>>>>
>>>> Can anyone outline a procedure for checking at which point a 
>>>> problem might occur and, if possible, a list of command line 
>>>> utilities that can reveal precisely what components are loaded. Is 
>>>> it possible to load modules incompletly such that a component 
>>>> identifies it's presence but isn't actual functioning. If this is 
>>>> so how does one check the dependancies?
>>>>
>>>> I understand that amix and alsamixer won't recognise the presence 
>>>> of a USB connected audio interface, is this the case?
>>>>
>>>> Any help appreciated.
>>>>
>>>> Chris Lyon
>>>>
>>>>
>>>>
>>>
>>>
>>>
>>>
>>
>>
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