Paul, my knowledge is not enough to help you, I'm sorry.
I have run "arecord -D plughw:1,0 -c 2 -r 48000 | aplay". How do you
stop it ?. Is "arecord -D plughw:1,0 -c 2 -r 48000 | aplay" correct?. I
ask you it because to stop "arecord -D plughw:1,0 -c 2 -r 48000 | aplay"
I've tried "Ctrl z", but to return everything to the beginning I need to
reload alsa (as root) with "alsa force-reload".
You can try to reload alsa (as root) with "alsa force-reload" instead of
restarting the whole system.
José Luis
El lun, 12-11-2012 a las 12:22 +0000,
[email protected] escribió:
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> Today's Topics:
>
> 1. Re: how to make all 8 channels play in a USB sound card ?
> (Sergei Steshenko)
> 2. Re: alsa arecord works then stops working - Re: alsa capture
> works then stops working (Paul Homlish)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Mon, 12 Nov 2012 04:01:08 +0400
> From: Sergei Steshenko <[email protected]>
> Subject: Re: [Alsa-user] how to make all 8 channels play in a USB
> sound card ?
> To: Clemens Ladisch <[email protected]>
> Cc: [email protected]
> Message-ID: <[email protected]>
> Content-Type: text/plain; charset=utf-8
>
>
>
>
> Wed, 07 Nov 2012 21:42:35 +0100 ?? Clemens Ladisch <[email protected]>:
> > Sergei Steshenko wrote:
> > > Wed, 07 Nov 2012 08:59:51 +0100 ?? Clemens Ladisch
> > > <[email protected]>:
> > >> Sergei Steshenko wrote:
> > >>> what controls should I set in order to make a default input (either
> > >>> "Mic" or "Line") an output
> > >>
> > >> The CM106 chip itself does not have the ability to make some input pin
> > >> an output (see section 5 of the datasheet). This is likely to be
> > >> managed by some external hardware controlled by some GPIO output.
> > >>
> > >> At the moment, the driver doesn't support this. You could try adding
> > >> a control to toggle GPIOs.
> > >
> > > "You could try adding a control to toggle GPIOs" - can I do it through
> > > 'amixer' or I need to change the driver ?
> >
> > The latter. Real programming needed.
> >
> >
> > Regards,
> > Clemens
> >
>
> After some web search I cam across 'usb-robot' -
> http://usb-robot.sourceforge.net/ .
>
> Its README file contents are:
>
> "
> This file describes the package and how to use it.
> You need a recent libusb. See INSTALL for details of requirements.
> See the file INSTALL for instructions on compiling and installing.
> See the file AUTHORS for who to mail about problems, suggestions, etc.
>
>
> usb-robot
> =========
>
> The latest version is always at http://usb-robot.sourceforge.net.
>
> The status of this release is beta. There are no known bugs, but
> virtually no testing has been carried out.
>
> This program is to communicate with generic USB devices using
> libusb. It can be used to send commands to the device directly from
> the console (usb-robot-slave), or as part of some rapidly prototyped
> driver in a language like perl or Python. For a really bad example of
> how you can do that, it comes with a program (usb-robot-master) that
> translates traces of MS-Windows driver actions into usb-robot-slave
> commands, so you can get your device to do whatever MS-Windows did to
> it. You can get these traces from sniffusb version 0.1, which is
> linked to from the usb-robot homepage.
>
> At the moment only control and bulk transfers are supported.
>
> Note that to communicate usefully with USB devices you need to be the
> superuser (root).
>
>
> Starting up
> ===========
>
> Linux 2.4.2:
>
> First load your USB kernel driver. See USB docs for more help.
> Don't forget to mount the /proc/bus/usb usbdevfs filesystem.
>
> *BSD:
>
> Does it work at all? Send mail!
>
>
> Running the slave directly
> ==========================
>
> # ./usb-robot-slave product=0x0099 vendor=0x05da
>
> This will search the USB buses for the specified device and open its
> /proc/bus/usb filehandle (via libusb). Now the command prompt will pop
> up.
>
> To see the commands you can use, type help and press return.
>
>
> Running the master
> ==================
>
> The (unpolished) usb-robot-master perl script can be used to control
> the usb-robot-slave, using debuglogs produced from sniffusb in
> conjunction with dbgview.
>
> Perhaps perl-5.6.0 is required. I don't know.
>
> The following example acts on turnon.log then scansuite.log, using
> them to control a device with specified product and vendor id.
>
> # ./usb-robot-master --session-type=interactive --product=0x99 --vendor=0x5da\
> /mnt/d/temp/turnon.log /mnt/d/temp/scansuite.log
>
> A session type other than "interactive" will produce output to STDOUT
> describing what would be passed to the slave and what output from the
> slave would be expected.
>
> A session type of "dump" will produce a condensed (more readable) dump
> of the logs passed to the program.
> ".
>
> So, maybe no real programming is needed provided I figure out what control
> data to send to the card ?
>
> Thanks,
> Sergei.
>
> ------------------------------
>
> Message: 2
> Date: Mon, 12 Nov 2012 05:39:12 -0500
> From: Paul Homlish <[email protected]>
> Subject: Re: [Alsa-user] alsa arecord works then stops working - Re:
> alsa capture works then stops working
> To: Jos? Luis Artuch <[email protected]>
> Cc: [email protected]
> Message-ID: <[email protected]>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> On 11/12/2012 5:35 AM, Paul J. Homlish III wrote:
> > Thanks for the suggestion Jose.
> >
> > I believe my description was poor:
> > arecord|aplay I hear sound, vlc I don't, back to arecord|aplay and no
> > sound until reboot.
> >
> > I did
> > amixer > amixer_dump
> > and
> > amixer contents > amixer_contents
> > before and after, the diff reports exact same settings.
> >
> >
>
>
>
>
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> End of Alsa-user Digest, Vol 79, Issue 15
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