The best way around this is not to use hw: values if at all possible. Just
call the card by name. To find out what the names are just run: cat
/proc/asound/cards and you'll see the card names in brackets. Just use the
name as seen in the brackets without the space padding and things should
work as expected
even if the card indexes happen to move around on reboot.
The same goes for setting the default system sound card or the default card
for a specific user.
To set the system default you'd edit /etc/asound.conf and add something
like:
pcm.!default {
type hw
card Audigy
}
On my system this sets the default sound card to the sound blaster audigy.
Or to set the default card for a specific user you'd put that code in
.asoundrc in the user's home directory.
Depending on what program you're using the syntax for specifying a device by
name can get a bit tricky (upper and lower case letters matter) but it
should be possible.
This all assumes the only problem you're having is with the card indexes
moving around. A bigger problem can be pulse audio trying to take exclusive
control of a card. In that case the only thing to do is disable pulse audio
or figure out how to get whatever you're using to work with it. It's been my
experience that things just work if pulse audio is completely disabled but
this may effect some things if you're using the gui.
My system has 7 sound cards so I've had to learn the hard way how to make
alsa maintain order.
On Wed, 29 Jun 2016, Janina Sajka wrote:
Could someone repost the link? I want to bookmark it and have
inadvertently killed the email that included it.
Also, it's very unfortunate that we need to rely on udev to definitively
assign sound devices as default, or a particular hw: value. That makes
lots of things hard, including scripts and including assigning certain
devices to certain kinds of work, like hw:0 for speakup, and hw:8 for
high end audio editing, as an example.
The only reason udev is a probably for this is that how to do this isn't
well documented, and there's no tool I know of that front ends the task
properly.
PS: We should also be able to clearly define which HW: devices are for
pulse, and which for jack, and which for alsa only. Is that too much to
ask?
Janina
Kirk Reiser writes:
I will say that the link posted pointed to some interesting
information. I was having a very similar problem on my Chromebook. It
took a long time to figure out that it was because alsa was trying to
talk to the HDMI and not letting me get espeakup running. The thing
that sort of bugs me is that udev should be smart enough to know if it
doesn't see an hdmi device connected it should ignore it and move on
to the next available device. Oh well. Alsa documentation has always
been the pits.
On Wed, 29 Jun 2016, Janina Sajka wrote:
No, dmix is part of alsa.
Jude DaShiell writes:
If I have this right, dmix is part of pulseaudio.
On Tue, 28 Jun 2016, Kristoffer Gustafsson wrote:
Date: Tue, 28 Jun 2016 17:21:07
From: Kristoffer Gustafsson <kg.kristoffer@xxxxxxxxx>
Reply-To: Speakup is a screen review system for Linux.
<speakup@xxxxxxxxxxxxxxxxx>
To: Speakup is a screen review system for Linux. <speakup@xxxxxxxxxxxxxxxxx>
Subject: Re: espeakup alsa errors
Hi.
I've just discovered something. I can't run any tts at all i think.
I'm trying festival too, and I get much errors about pcm-dmix, cannot
open slave device.
Everything worked fine before, and now on this computer... :(
/Kristoffer
2016-06-28 21:12 GMT+02:00, Chris Brannon
<chris@xxxxxxxxxxxxxxxx>:
Kristoffer Gustafsson <kg.kristoffer@xxxxxxxxx> writes:
but when I type espeakup I get just much errors about
alsa.
What is going on here?
Hi,
Can you save those errors to a file and post it?
-- Chris
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-- > Kristoffer Gustafsson
Sal?ngsgatan 7a
tel:033-12 60 93
mobil: 0730-500934
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--
Janina Sajka, Phone: +1.443.300.2200
sip:janina@xxxxxxxxxxxxxxxxxxxx
Email: janina@xxxxxxxxxxx
Linux Foundation Fellow
Executive Chair, Accessibility Workgroup: http://a11y.org
The World Wide Web Consortium (W3C), Web Accessibility Initiative (WAI)
Chair, Accessible Platform Architectures http://www.w3.org/wai/apa
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--
Well that's it then, colour me secure!
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_______________________________________________
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--
Janina Sajka, Phone: +1.443.300.2200
sip:janina@xxxxxxxxxxxxxxxxxxxx
Email: janina@xxxxxxxxxxx
Linux Foundation Fellow
Executive Chair, Accessibility Workgroup: http://a11y.org
The World Wide Web Consortium (W3C), Web Accessibility Initiative (WAI)
Chair, Accessible Platform Architectures http://www.w3.org/wai/apa
_______________________________________________
Speakup mailing list
Speakup@xxxxxxxxxxxxxxxxx
http://linux-speakup.org/cgi-bin/mailman/listinfo/speakup
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