[PD] RPI USB Audio -nogui "Invalid value for card"

[Miller Puckette]

Well, first off, do you know about X11 forwarding in ssh?  It's easy
to run GUI programs over ssh and have all teh windows pop up on
the calling machine.  Just make sure /etc/ssh/sshd_config on the
Pi has the line "X11Forwarding yes" (and restart sshd if necessary) and
run "ssh -X" from the calling machine (-X might be on by default anyway;
also you can change the default in /etc/ssh/ssh_configu).  Type "pd" on
the remote shell and bingo, the Pd window pops up on the calling one.

Sometimes there's an extra step to get permission to use the audio device on
the remote machine if you aren't roo on it -- this can be done by adding your
user account to group 'audio'.

cheers
Miller

On Sun, Sep 02, 2012 at 09:52:50AM -0400, m.e.grimm wrote:
> hey miller.
> 
> yeah on raspbian i got rid of the "invalid card" nag. no way to test
> stuff at moment via gui. all done via ssh on headless rpi.
> 
> my guess is it has nothing to do with pd. usb cards have to be set to default.
> 
> $ nano /etc/asound.conf
> 
> pcm.!default {
>         type hw
>         card 0
> }
> 
> ctl.!default {
>         type hw
>         card 0
> }
> 
> $nano /etc/modprobe.d/alsa-base.conf
> change line:
> # Keep snd-usb-audio from beeing loaded as first soundcard
> options snd-usb-audio index=-2
> 
> to:
> # Keep snd-usb-audio from beeing loaded as first soundcard
> options snd-usb-audio index=0
> 
> 
> m
> 
> On Sat, Sep 1, 2012 at 7:13 PM, Miller Puckette <msp at ucsd.edu> wrote:
> > Hmm - no matter what I try over here I can't get Pd to complain
> > 'Invalid value for card' - a lame guess would be that either the
> > input or output only does mono and Pd is asking for 2 channels or
> > something like that.
> >
> > I suppose all works fine when you open Pd with a GUI, right?
> >
> > Thanks for your patience...
> > M
> >
> > On Sat, Sep 01, 2012 at 06:33:37PM -0400, m.e.grimm wrote:
> >> hey miller,
> >>
> >> > You can type "pd -nogui -audiodev 1" (1 is the default anyway) to get
> >>
> >> yeah that's what i meant. "pd -nogui -audiodev 1", "pd -nogui
> >> -audiodev 2", etc etc.... All giving me the same error.
> >>
> >> ALSA lib pcm_hw.c:1401:(_snd_pcm_hw_open) Invalid value for card
> >> snd_pcm_open (input): No such file or directory
> >> ALSA lib pcm_hw.c:1401:(_snd_pcm_hw_open) Invalid value for card
> >> snd_pcm_open (output): No such file or directory
> >>
> >>
> >>
> >> m
> >>
> >>
> >> On Sat, Sep 1, 2012 at 2:17 PM, Miller Puckette <msp at ucsd.edu> wrote:
> >> > You can type "pd -nogui -audiodev 1" (1 is the default anyway) to get
> >> > the "hardware" device or  "pd -nogui -audiodev 2" to get the "plughw"
> >> > device.  The "device numbers" in the Pd argument agree with the numbering
> >> > that "-listdev" prints out.
> >> >
> >> > cheers
> >> > Miller
> >> >
> >> > On Sat, Sep 01, 2012 at 12:11:42PM -0400, m.e.grimm wrote:
> >> >> My audio card is listed as:
> >> >>
> >> >> pi at raspberrypi ~ $ lsusb
> >> >> Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
> >> >> Bus 001 Device 002: ID 0424:9512 Standard Microsystems Corp.
> >> >> Bus 001 Device 003: ID 0424:ec00 Standard Microsystems Corp.
> >> >> Bus 001 Device 004: ID 7392:7811 Edimax Technology Co., Ltd EW-7811Un
> >> >> 802.11n Wireless Adapter [Realtek RTL8188CUS]
> >> >> Bus 001 Device 008: ID 0d8c:000e C-Media Electronics, Inc. Audio
> >> >> Adapter (Planet UP-100, Genius G-Talk)
> >> >>
> >> >> pi at raspberrypi ~ $ aplay -l
> >> >> **** List of PLAYBACK Hardware Devices ****
> >> >> card 1: Device [Generic USB Audio Device], device 0: USB Audio [USB Audio]
> >> >>   Subdevices: 1/1
> >> >>   Subdevice #0: subdevice #0
> >> >>
> >> >>
> >> >> When i do:
> >> >>
> >> >> pi at raspberrypi ~ $speaker-test -Dplughw:1,0 -t sine -f 800
> >> >>
> >> >> I get a test tone from the output. Then I do:
> >> >>
> >> >> pi at raspberrypi ~ $ sudo pd -nogui -listdev
> >> >> audio input devices:
> >> >> 1. Generic USB Audio Device (hardware)
> >> >> 2. Generic USB Audio Device (plug-in)
> >> >> audio output devices:
> >> >> 1. Generic USB Audio Device (hardware)
> >> >> 2. Generic USB Audio Device (plug-in)
> >> >> API number 1
> >> >>
> >> >> pi at raspberrypi ~ $ pd -nogui -alsa -nomidi -audiodev 1,1
> >> >> ALSA lib pcm_hw.c:1401:(_snd_pcm_hw_open) Invalid value for card
> >> >> snd_pcm_open (input): No such file or directory
> >> >> ALSA lib pcm_hw.c:1401:(_snd_pcm_hw_open) Invalid value for card
> >> >> snd_pcm_open (output): No such file or directory
> >> >>
> >> >>
> >> >> hmmmm... am i doing something silly wrong here? what am i missing with
> >> >> my flags that giving me "Invalid value for card"?
> >> >>
> >> >> thanks!
> >> >> m
> >> >>
> >> >> --
> >> >> ____________________
> >> >> m.e.grimm | m.f.a | ed.m.
> >> >> megrimm at gmail.com
> >> >> _________________________________
> >> >>
> >> >> _______________________________________________
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> >> >> UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
> >>
> >>
> >>
> >> --
> >> ____________________
> >> m.e.grimm | m.f.a | ed.m.
> >> megrimm at gmail.com
> >> _________________________________
> 
> 
> 
> -- 
> ____________________
> m.e.grimm | m.f.a | ed.m.
> megrimm at gmail.com
> _________________________________