[LAU] Migrating to Linux - need help

Robin Gareus robin at gareus.org
Thu Sep 30 11:17:01 UTC 2010

Hi Edu,

I did not know that there's gtk graphical support for screen-readers
these days. and that thay're good enough to even work wit complex
applications such as ardour. Wow, That's amazing.

If you like the console:
http://ltsb.sourceforge.net/ is a "guide is inteded for blind, tuxish
musicians and all others, who simply like the console." It may be a bit
outdated though.

As for your sound-issue: It _may_ be pulseaudio blocking the card.
Edit /etc/pulse/client.conf or $HOME/.pules/client.conf and set
  autospawn = no
and simply stick to use JACK.

jackd requires exclusive access to the soundcard. So if the system is
playing sound (I guess your voice-speak accessibility system) JACK can
not use that card.

If the text-to-voice application supports JACK you could launch jackd
before that, but you're probably better off using the built-in soundcard
for that and use jack only for for audio-engineering.

It looks like your main problem boils down to wrong numbering of the
sound-cards. This has been a long standing issue on Linux and there are
a few ways around it:

 1) If the numbering is consistent on each boot: you can simply not care
about the number and configure all audio-software to use whatever ID.

 2) the "modern way" using udev: http://alsa.opensrc.org/index.php/Udev

 3) the "old way" using module load options:

It may also help to split up your many questions into several emails to
get better answers. eg. sound-card numbering, jackd startup from the
console, and last but not least: recommended applications for whatever
audio task you're up to.

You may also find a lot of answers to those already via google or the
archive of this list.


PS. As far as I know, you are not the only Linux-Audio-User on this list
who needs to rely on a screen-reader. Others may be on holiday or are
just busy.

PPS. I have top-posted because I assumed that's easier for both
screen-readers and text-to-speech synths.
The preferred method on this list is to use inline-replys or
bottom-posting. I've wondered a few times if this is a problem with
accessibility in general. Care to enlighten me?

On 09/28/10 18:38, Edu Camargo wrote:
> Hello guys, peace and music to all of you.
> Here's my story:
> I won a laptop some months ago, and with the Windows 7's arrival I
> decided to try a Linux distro, more precisely Ubuntu, for its facility
> and also, for the Gnome's accessibility from the CD boot to the final
> instalation, which is an enormous advantage for us blind users, when we
> want to setup a computer independently. I use computer for ten years and
> it's good to see Linux and Apple's developers going towards facilities
> to everybody... I've mentioned Apple because seems that Apple's
> Voiceover can also be accessed even during the instalation according to
> an article I've read on the web.
> Anyway, I've tested Ubuntu 9.10 and it wasn't that good because it had
> some audio issues including with the Orca's usage, so I decided to wait,
> and soon came Ubuntu 10.04 and, for the moment, it took all the chances
> of Windows getting wrapped into my laptop. Besides, with a few, very few
> programs I can do all the things I need to do... Of course things may
> change in the future, but it's good to work in a system so light,
> secure, and it's even better to find a supportive comunity.
> Last saturday I decided to move my desktop computer, an Athlon X2 4000,
> Asus M2N-SLI, 2GB of RAM with two hard disks, to Ubuntu 10.04.1 64bits
> version. I really got amazed with the performance, even the Orca screen
> reader is more responsive with the 64bits version. I'm interested in
> audio production using Linux, so I need clues.
> I have two audio cards, the mother board's built-in and the Delta
> Audiophile 2496, the ladder one detected as card 0, wich according to my
> understanding is the default card. But I was unable to get output from
> the Delta, so I had to select the built-in sound card as my default
> output for the moment. Then, after further reading I could install jackd
> and Ardour for a test, and with Ardour I get all the feedback I need
> while playing sounds through Delta. But of course, my goall is to make
> the system work fully with the Delta.
> What should I do to build a stable audio set using Ubuntu? And of
> course, what are the must have programs? Since Orca is GTK-based, I'd
> prefer to stay far from KDE due to accessibility issues. The thing I've
> loved about Ardour is that I'm able to control jack without having to
> access the jack GUI, which is KDE. But of course, if I can adjust
> settings by editing configuration files it'll be better.
> Any tips on how to make things work decently will be very appreciated.
> Sorry for some obvious questions that I might have asked, and sorry for
> the book.
> Thanks in advance for all the input.
> Warm regards from São Paulo, Brazil.
> Edu Camargo.
> _______________________________________________
> Linux-audio-user mailing list
> Linux-audio-user at lists.linuxaudio.org
> http://lists.linuxaudio.org/listinfo/linux-audio-user

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