WARNING: Latest Linphone on Arch breaks device access

Janina Sajka janina at rednote.net
Wed Sep 7 16:19:09 EDT 2016


Haha! Chris Brannon, you rock! Mission accomplished

I now have in /etc/modprobe.d/alsa.conf the USB sound card device
ordering that makes the trick you suggested work like a charm:

ALSA_CARD=Headset linphonec; linphonec

brings up the SIP phone and works as expected. I think this will
seriously do until the real thing comes along! <satisfied grin>

Thanks again, Chris!

Janina

Janina Sajka writes:
> Chris:
> 
> You've put me on the trail of docs I've looked for and failed to find
> forever.
> 
> I'm now looking at:
> http://alsa.opensrc.org/MultipleCards
> 
> 
> If I'm reading this correctly, I should be able to get the results I
> need by specifying a vendor and product id to order my two usb cards
> like I want them ordered.
> 
> Very cool. Hope it works!
> 
> Janina
> 
> 
> Chris Brannon writes:
> > Janina Sajka <janina at rednote.net> writes:
> > 
> > > It was a great suggestion, Chris. Unfortunately, it seems there's yet
> > > another bug in how alsa handles usb devices.
> > >
> > > I have 2 usb devices. No matter how I specify things, the card that gets
> > > invoked is the first of those two.
> > 
> > Oh interesting.  So it looks like there's a name clash.
> > Last time I dealt with multiple USB audio devices, they had unique
> > human-friendly IDs by default.  My Logitech USB headset was called
> > Headset, and my FM transmitter was called RocketFM.
> > Apparently I was just lucky.
> > 
> > Not sure how much you know about alsa, so I'll also mention that
> > you can see the human friendly IDs by looking for the symlinks in
> > /proc/asound.  They're also listed in the output of aplay -l, but it's
> > sort of non-intuitive what they are.
> > 
> > > Now, if I were really clever, I suppose I'd know how to write udev rules
> > > to insure that the Sennheiser gets a lower card ID than the C-Media
> > > device.
> > 
> > Well if you send me the output of lsusb, I can probably write some udev rules
> > for you.  Or alternatively have a look at http://alsa.opensrc.org/Udev for a
> > starting point.
> > 
> > -- Chris
> > _______________________________________________
> > Speakup mailing list
> > Speakup at linux-speakup.org
> > http://linux-speakup.org/cgi-bin/mailman/listinfo/speakup
> 
> -- 
> 
> Janina Sajka,	Phone:	+1.443.300.2200
> 			sip:janina at asterisk.rednote.net
> 		Email:	janina at rednote.net
> 
> 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 at linux-speakup.org
> http://linux-speakup.org/cgi-bin/mailman/listinfo/speakup

-- 

Janina Sajka,	Phone:	+1.443.300.2200
			sip:janina at asterisk.rednote.net
		Email:	janina at rednote.net

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



More information about the Speakup mailing list