Results:
# cat /proc/asound/card3/stream0 cat: /proc/asound/card3/stream0: No such file or directory *** # alsamixer -D hw:GR55 This sound device does not have any controls. *** # amixer -D hw:GR55 controls [Nothing] *** # cat /proc/asound/GR55/stream0 Roland GR-55 at usb-0000:00:12.2-4, high speed : USB Audio
Playback: Status: Stop Interface 0 Altset 1 Format: S32_LE Channels: 2 Endpoint: 5 OUT (ASYNC) Rates: 44100 Data packet interval: 125 us
Capture: Status: Stop Interface 1 Altset 1 Format: S32_LE Channels: 2 Endpoint: 4 IN (ASYNC) Rates: 44100 Data packet interval: 125 us *** # cat /proc/asound/GR55/midi0 GR-55 *** # aplay -D plughw:GR55,0,0 /usr/share/sounds/alsa/Front_Center.wav Playing WAVE '/usr/share/sounds/alsa/Front_Center.wav' : Signed 16 bit Little Endian, Rate 48000 Hz, Mono [No sound] *** I am facing two problems, I am unfamiliar with this piece of equipment and as a result, I'm unsure how to test it.
Testing Audio function: I tested it with Audacity in Windozes and it works; in Linux I set it up the same way: GR-55 USB Audio (hw:1,0) as recording device; no sound. Using Logitech Webcam software I can record the guitar output; Using Cheese, I do not get Audio.
Testing MIDI function: I'm going to call tech support on this one; I have not found a Windows app that seems to work with the MIDI; so I can not expect to test this in Linux yet; I would like to be able to convert notes into sheet music; I tried TuxGuitar, but must admit I don't know how to get it to work with MIDI input, or if it even does.
So far I have not been impressed with how this device works in Windows; asking questions at forums I get users say to use Windows, I have no idea why, the quality was not that good.
I must say it works great with just the headphones connected to the device.
I'm thinking about getting M-Audio Fast track pro to provide an input for the GR-55 as well as my NTG-1 mic; can you tell me the status of the driver for this unit; I have seen talk about the driver here, but not sure if the Fast track, and fast track pro are the same, or if this unit will even work with the GR-55, I have ask at other forums and have gotten no reply.
I'm going to keep on this till I get it 100%; I have patience; lets hope you do too.
Thanks Jeff
-----Original Message----- From: Daniel Mack zonque@gmail.com To: Jeffrey Scott Flesher Gmail jeffrey.scott.flesher@gmail.com Cc: alsa-devel@alsa-project.org Subject: Re: [alsa-devel] GR-55 Driver Date: Mon, 16 May 2011 09:05:54 +0200
On Mon, May 16, 2011 at 1:13 AM, Jeffrey Scott Flesher Gmail jeffrey.scott.flesher@gmail.com wrote:
Still no luck; I spent most of the day researching and trying things.
This is a file of what information I could dig up; it should be useful http://vetshelpcenter.com/media/trouble-shoot-gr-55.txt
Are there any programs/scripts I can install/run that will help trouble shoot this?
You most probably just have a confusion about the four cards connected to your computer.
As you can see from your output of /proc/asound/cards, the GR55 is not the first one, and hence not the default picked by tools like aplay or amixer. However, it is present, which is a good sign. For further parsing the contents of /proc/asound, you need to refer to the device number, which is not 1 (as in "card1") but 3. What does "cat /proc/asound/card3/stream0" show?
Just try "alsamixer -D hw:GR55" to control the volume levels, or "amixer -D hw:GR55 controls" to dump them.
And then, try "aplay -D plughw:GR55,0,0 file.wav" for a first output test.
Does that help?
Daniel