Subject: Re: [linux-audio-user] CD audio
From: Patrick Shirkey (pshirkey_AT_boosthardware.com)
Date: Tue Jul 16 2002 - 20:33:52 EEST
Speaker to Vegetables wrote:
> This thread has been a wonderful illustration of why you have to be
> crazy to try to use Linux for audio at present,
At least very persistent :)
> and of the kinds of
> problems that I see in nearly all Linux howtos and other documentation.
The blind leading the blind?
> Various experts on Linux audio lead an intelligent newbie around in
> circles by making wrong assumptions about where he is starting from (in
> terms of system configuration, familiarity with Unix conventions for
> command lines, etc.). I must admit, it is a lot easier to make
> assumptions than to find out what is really going on.
>
Perhaps not everyone has the interest to perefectly explain something
that has been said a million times over.
> In looking at the lsmod module list below, I have to wonder about the
> module "audio". It uses the soundcore and usbcore modules -- why would
> it do that if it is not a usb audio driver? Since no ALSA modules are
> loaded, it would have to be an old-style (sometimes confusingly called
> OSS) sound driver. Probably the Red Hat installer set this up
> automagically. I wonder if it works?
>
> Does playing a .wav file (with, for example, xmms) work?
>
Apparently it does but the cdda plugin doesn't work for him.
>>From other messages in the thread, it seems that the install of the ALSA
> drivers failed. Perhaps a copy of the output produced by "make install"
> in the ALSA drivers source directory would show why. The output of the
> "./configure" command in the ALSA drivers directory might also contain
> good clues.
>
We don't know that for sure but you're right in asking for the info to
put our minds at rest.
> On the other hand, if the audio driver that is already installed works,
> installing the ALSA driver is a waste of time unless you actually want
> to use some features that are unique to ALSA.
>
Good point but Joseph obviously does becasue oss does not support usb audio.
> As previously observed, to play an audio CD though a USB audio
> interface, you must digitally extract the audio data from the CD,
> exactly as if you were "ripping" the CD to a .wav (or other digital
> audio format) file. ALSA has nothing to do with this process. To work
> on this part of the problem, look at "CD ripping" software such as
> cdda2wav and/or cdparanoia, and associated howtos.
>
It is unnecessary for him to read up about that if he uses a working
version of xmms or alsaplayer, but it won't hurt if he does.
> Once extracting audio, and playing audio, both work, it will be time to
> try a program that does both at once.
>
Again we had to reestablish that Joseph wanted to use his usb card and
not the via8233.
> On Sunday 14 July 2002 03:13 pm, Joseph Zitt wrote:
>
>>On Sun, 14 Jul 2002 17:06:05 +0900
>>
>>Patrick Shirkey <pshirkey_AT_boosthardware.com> wrote:
>>
>>>try to modprobe first.
>>>
>>>eg.
>>>
>>>modprobe snd-usb-audio; modprobe snd-mixer-oss; modprobe
>>>snd-pcm-oss; modprobe snd-seq-oss
>>
>>[root_AT_aleph jzitt]# /sbin/modprobe snd-via8233;/sbin/modprobe
>>snd-pcm-oss;/sbin/modprobe snd-mixer-oss;/sbin/modprobe snd-seq-oss
>>
>>modprobe: Can't locate module snd-via8233
>>modprobe: Can't locate module snd-pcm-oss
>>modprobe: Can't locate module snd-mixer-oss
>>modprobe: Can't locate module snd-seq-oss
>>
>>
>>>then run lsmod to check the modules are loaded.
>>
>>[root_AT_aleph jzitt]# /sbin/lsmod
>>Module Size Used by Not tainted
>>ppp_deflate 4032 1 (autoclean)
>>zlib_deflate 21344 0 (autoclean) [ppp_deflate]
>>ppp_async 8256 1 (autoclean)
>>ppp_generic 24108 3 (autoclean) [ppp_deflate ppp_async]
>>slhc 6508 1 (autoclean) [ppp_generic]
>>audio 41088 1 (autoclean)
>>soundcore 6692 2 (autoclean) [audio]
>>serial_cs 5344 0 (unused)
>>ds 8608 2 [serial_cs]
>>yenta_socket 12384 2
>>pcmcia_core 50752 0 [serial_cs ds yenta_socket]
>>autofs 12164 0 (autoclean) (unused)
>>ipchains 43560 9
>>ide-cd 30272 0 (autoclean)
>>cdrom 32192 0 (autoclean) [ide-cd]
>>nls_iso8859-1 3488 2 (autoclean)
>>nls_cp437 5120 2 (autoclean)
>>vfat 12092 2 (autoclean)
>>fat 37400 0 (autoclean) [vfat]
>>usb-uhci 24484 0 (unused)
>>usbcore 73152 1 [audio usb-uhci]
>>ext3 67136 1
>>jbd 49400 1 [ext3]
>>
>>(I think this doesn't look good...)
>
>
-- Patrick Shirkey - Boost Hardware Ltd. For the discerning hardware connoisseur http://www.boosthardware.com http://www.boosthardware.com/LAU/guide/ ========================================
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