On Fri, 13 Nov 2020 12:11:33 -0500, chris hermansen wrote: > > [1 <text/plain; UTF-8 (quoted-printable)>] > John and list; > > On Fri, Nov 13, 2020 at 8:28 AM John Covici <covici@xxxxxxxxxxxxxx> wrote: > > > Hi. I have a ?Dragonfly Red which is supposed to be a USB dac, and I > > am unable to connectit with alsa. Its seen by the system and here is > > what I get for the card under Alsa: > > > > 1 [v10 ]: USB-Audio - AudioQuest DragonFly Red v1.0 > > AudioQuest AudioQuest DragonFly Red v1.0 at > > usb-0000:00:14.0-10.2, full speed > > > > But if I try to use something like mpv to play anything with commands > > such as > > > > mpv --audio-device=alsa/usbstream, the system comes back with invalid > > type for card. > > > > If I do aplay -l I get for the card: > > > > card 1: v10 [AudioQuest DragonFly Red v1.0], device 0: USB Audio [USB > > Audio] > > Subdevices: 1/1 > > > > So, how would I even designate the device and how would I get alsa to > > play it -- there is no volume control on the device which makes it > > even more complicated. > > > > Thanks in advance for any suggestions. > > > > > As it happens I have an original DragonFly which works just fine with ALSA. > > With it plugged in, instead of "aplay -l", use "aplay -L" (also it doesn't > hurt to do "sudo aplay -L"). In my case I see the following: > > default:CARD=DragonFly > AudioQuest DragonFly, USB Audio > Default Audio Device > sysdefault:CARD=DragonFly > AudioQuest DragonFly, USB Audio > Default Audio Device > front:CARD=DragonFly,DEV=0 > AudioQuest DragonFly, USB Audio > Front speakers > surround21:CARD=DragonFly,DEV=0 > AudioQuest DragonFly, USB Audio > 2.1 Surround output to Front and Subwoofer speakers > surround40:CARD=DragonFly,DEV=0 > AudioQuest DragonFly, USB Audio > 4.0 Surround output to Front and Rear speakers > surround41:CARD=DragonFly,DEV=0 > AudioQuest DragonFly, USB Audio > 4.1 Surround output to Front, Rear and Subwoofer speakers > surround50:CARD=DragonFly,DEV=0 > AudioQuest DragonFly, USB Audio > 5.0 Surround output to Front, Center and Rear speakers > surround51:CARD=DragonFly,DEV=0 > AudioQuest DragonFly, USB Audio > 5.1 Surround output to Front, Center, Rear and Subwoofer speakers > surround71:CARD=DragonFly,DEV=0 > AudioQuest DragonFly, USB Audio > 7.1 Surround output to Front, Center, Side, Rear and Woofer speakers > iec958:CARD=DragonFly,DEV=0 > AudioQuest DragonFly, USB Audio > IEC958 (S/PDIF) Digital Audio Output > dmix:CARD=DragonFly,DEV=0 > AudioQuest DragonFly, USB Audio > Direct sample mixing device > dsnoop:CARD=DragonFly,DEV=0 > AudioQuest DragonFly, USB Audio > Direct sample snooping device > hw:CARD=DragonFly,DEV=0 > AudioQuest DragonFly, USB Audio > Direct hardware device without any conversions > plughw:CARD=DragonFly,DEV=0 > AudioQuest DragonFly, USB Audio > Hardware device with all software conversions > usbstream:CARD=DragonFly > AudioQuest DragonFly > USB Stream Output > > In my case, I'm mostly interested in using the DragonFly as a dedicated > music-playing DAC so I would do the following: > > 1. tell PulseAudio to ignore it (I don't want it to be the system > default) - see this article for example > https://jamielinux.com/blog/tell-pulseaudio-to-ignore-a-usb-device-using-udev/ > 2. use the plughw:CARD=DragonFly,DEV=0 device for a music player like > GogglesMM that talks directly to ALSA, or hw:CARD=DragonFly,DEV=0 for music > players like Guayadeque that use gstreamer to talk to the DAC. This is > because, at least in the case of the original DragonFly, it only accepts > 24bit signals, which you can see if you type: > > cat /proc/asound/DragonFly/stream0 > > which in my case looks like this: > > AudioQuest inc. AudioQuest DragonFly at usb-0000:00:14.0-1, full speed : > USB Audio > > Playback: > Status: Stop > Interface 1 > Altset 1 > Format: S24_3LE > Channels: 2 > Endpoint: 1 OUT (ASYNC) > Rates: 44100, 48000, 88200, 96000 > Bits: 24 > Channel map: FL FR > > I hope this helps! Thanks for your quick reply. I would like to use a regular console player such as mpv or some such to play directly to alsa without pulse audio, and when I do /proc/asound/card1/stream0 I get much the same as you. so, for mpv, they have --audio-device=alsa/ and then they want the alsa device name, so what can I put there? Here is my current /etc/asound.conf . The second card mentioned in the .conf is another dac which I have, but I could put a third stanza in there, if I knew what to put. Thanks. pcm.!default { type hw card { @func getenv vars [ ALSACARD ] default 0 } } ctl.!default { type hw card { @func getenv vars [ ALSACARD ] default 0 } } pcm.usbmix { type dmix ipc_key 1024 ipc_key_add_uid false ipc_perm 0666 slave { pcm "hw:1,0" } } -- Your life is like a penny. You're going to lose it. The question is: How do you spend it? John Covici wb2una covici@xxxxxxxxxxxxxx _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user
