Re: USB audio device - Error: parse_audio_format_rates_v2(): unable to retrieve number of sample rates

[jem_7@xxxxxx]

Hi Daniel,

thanks a lot for your reply.

Sorry for catching up so late. Is this issue solved already?

On 28.02.2012 00:43, Joachim Gahl wrote:
> I would like to ask for some help with an USB audio class 2 device.

[...]

> I am running openSUSE 11.4, 64bit (Kernel 2.6.37-0.11 desktop). ALSA
> version is 1.0.24 according to YAST but alsamixer reports driver
> version 1.0.23.
> 
> When I connect the Axe-Fx II to my systems the MIDI interface appears
> and works. Problem is the audio interface. /var/log/messages reports
> 
> ALSA format.c:287: parse_audio_format_rates_v2(): unable to retrieve
> number of sample rates (clock 40) ALSA format.c:287:
> parse_audio_format_rates_v2(): unable to retrieve number of sample
> rates (clock 5)
> 
> and no capture or playback device can be found.
> 
> I emailed the manufacturer and they told me that the Axe-Fx II does
> not respond to GetSampleFrequencyRange requests. So I suspect this
> might be the reason for the error messages.

Which violates the spec IIRC. How should the driver know about
configurable sample rates then?

I can send you a patch that adds a quirk to hard-code the sample rates
for this card, but I would need to known which ones are valid.


Daniel

Unfortunately I don't know how to appropiately mail a follow-up to your posting. So this post might not show up as a direct reply. Apologies for that.

But to answer your questions:

My issue is not solved. In the meantime I switched to openSUSE 12.1 (kernel 3.1.9-1.4 desktop, 64bit). ALSA version reported by alsamixer is 1.0.24.

I also tried to write a quirk, put the following lines into quirk-table.h and recompiled.

/*
 * Fractal Audio Systems devices
 */
{
    USB_DEVICE(0x2466, 0x8003),
    .driver_info = (unsigned long) & (const struct snd_usb_audio_quirk) {
        .vendor_name = "Fractal Audio Systems",
        .product_name = "AXE-FX II",
        .ifnum = QUIRK_ANY_INTERFACE,
        .type = QUIRK_COMPOSITE,
        .data = "" (const struct snd_usb_audio_quirk[]) {
            {
                .ifnum = 0,
                .type = QUIRK_AUDIO_STANDARD_MIXER
            },
            {
                .ifnum = 1,
                .type = QUIRK_AUDIO_FIXED_ENDPOINT,
                .data = "" (const struct audioformat) {
                    .formats = SNDRV_PCM_FMTBIT_S24_3LE,
                    .channels = 2,
                    .iface = 1,
                    .altsetting = 1,
                    .altset_idx = 1,
                    .attributes = 0,
                    .endpoint = 0x02,
                    .ep_attr = 0x05,
                    .maxpacksize = 0x002a,
                    .rates = SNDRV_PCM_RATE_CONTINUOUS,
                    .rate_min = 48000,
                    .rate_max = 48000
                }
            },
            {
                .ifnum = 2,
                .type = QUIRK_AUDIO_FIXED_ENDPOINT,
                .data = "" (const struct audioformat) {
                    .formats = SNDRV_PCM_FMTBIT_S24_3LE,
                    .channels = 4,
                    .iface = 2,
                    .altsetting = 1,
                    .altset_idx = 1,
                    .attributes = 0,
                    .endpoint = 0x86,
                    .ep_attr = 0x05,
                    .maxpacksize = 0x0054,
                    .rates = SNDRV_PCM_RATE_CONTINUOUS,
                    .rate_min = 48000,
                    .rate_max = 48000
                }
            },
            {
                .ifnum = 3,
                .type = QUIRK_MIDI_STANDARD_INTERFACE
            },
            {
                .ifnum = -1
            }
        }
    }
},

As soon as the device is connected in /var/log/messages now appears:

... kernel: [ 6183.427373] ALSA pcm.c:343 cannot set format: format = 0x20, rate = 48000, channels = 2
... pulseaudio[2803]: [pulseaudio] module-alsa-card.c: Failed to find a working profile.
... pulseaudio[2803]: [pulseaudio] module.c: Failed to load module "module-alsa-card" (argument: "device_id="3" name="usb-Fractal_Audio_Systems_AXE-FX_II-00-II" card_name="alsa_card.usb-Fractal_Audio_Systems_AXE-FX_II-00-II" namereg_fail=false tsched=yes ignore_dB=no deferred_volume=yes card_properties="module-udev-detect.discovered=1""): initialization failed.
... pulseaudio[2803]: [pulseaudio] module-udev-detect.c: Tried to configure /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.1/2-1.1:1.0/sound/card3 (alsa_card.usb-Fractal_Audio_Systems_AXE-FX_II-00-II) more often than 5 times in 10s
... pulseaudio[2803]: [pulseaudio] module.c: Failed to load module "module-alsa-card" (argument: "device_id="3" name="usb-Fractal_Audio_Systems_AXE-FX_II-00-II" card_name="alsa_card.usb-Fractal_Audio_Systems_AXE-FX_II-00-II" namereg_fail=false tsched=yes ignore_dB=no deferred_volume=yes card_properties="module-udev-detect.discovered=1""): initialization failed.

And when I try to record with arecord I get the following:

arecord -c4 -f S24_3LE -r 48000 -d 10 -D plughw:3,0 test.wav
Aufnahme: WAVE 'test.wav' : Signed 24 bit Little Endian in 3bytes, Rate: 48000 Hz, 4 Kanäle
arecord: set_params:1137: Fehler beim Setzen der Hardware-Parameter:
ACCESS:  RW_INTERLEAVED
FORMAT:  S24_3LE
SUBFORMAT:  STD
SAMPLE_BITS: 24
FRAME_BITS: 96
CHANNELS: 4
RATE: 48000
PERIOD_TIME: 125000
PERIOD_SIZE: 6000
PERIOD_BYTES: 72000
PERIODS: 4
BUFFER_TIME: 500000
BUFFER_SIZE: 24000
BUFFER_BYTES: 288000
TICK_TIME: 0

I would be very glad, if you could have a look at my quirk. Any help is highly appreciated.

Joachim


P.S. The only sample valid rate for the Axe-FX II is 48000 Hz at 24bit.

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