Hi,

i did send the patch a few month ago, however i didn't got any feedback.

The Patch workarrounds the fact that the device appears to be working ASYNC, however it will be hanging, not playing or capturing a single byte. The 2 channel Altset kind of works, but sound is distorded. The 18 channel Altset works as intended.

diff --git a/quirks-table.h.orig b/quirks-table.h index b345beb..7272b46 100644 --- a/quirks-table.h.orig +++ b/quirks-table.h @@ -1777,6 +1777,109 @@ YAMAHA_DEVICE(0x7010, "UB99"), } } }, +{ + /* has ID 0x006e when not in "Advanced Driver" mode */ + USB_DEVICE(0x0582, 0x01a3), + .driver_info = (unsigned long) & (const struct snd_usb_audio_quirk) { + .vendor_name = "Roland", + .product_name = "MX-1", + .ifnum = QUIRK_ANY_INTERFACE, + .type = QUIRK_COMPOSITE, + .data = (const struct snd_usb_audio_quirk[]) { + { + .ifnum = 0, + .type = QUIRK_IGNORE_INTERFACE + }, + { + .ifnum = 1, + .type = QUIRK_AUDIO_FIXED_ENDPOINT, + .data = & (const struct audioformat) { + .formats = SNDRV_PCM_FMTBIT_S32_LE, + .channels = 0x12, + .iface = 1, + .altsetting = 1, + .altset_idx = 1, + .endpoint = 0x0d, + .ep_attr = USB_ENDPOINT_XFER_ISOC | + USB_ENDPOINT_SYNC_NONE, + .rates = SNDRV_PCM_RATE_96000, + .rate_min = 96000, + .rate_max = 96000, + .nr_rates = 1, + .rate_table = (unsigned int[]) { 96000 } + } + }, + { + .ifnum = 1, + .type = QUIRK_AUDIO_FIXED_ENDPOINT, + .data = & (const struct audioformat) { + .formats = SNDRV_PCM_FMTBIT_S32_LE, + .channels = 2, + .iface = 1, + .altsetting = 2, + .altset_idx = 2, + .endpoint = 0x0d, + .ep_attr = USB_ENDPOINT_XFER_ISOC | + USB_ENDPOINT_SYNC_NONE, + .rates = SNDRV_PCM_RATE_96000, + .rate_min = 96000, + .rate_max = 96000, + .nr_rates = 1, + .rate_table = (unsigned int[]) { 96000 } + } + }, + { + .ifnum = 2, + .type = QUIRK_AUDIO_FIXED_ENDPOINT, + .data = & (const struct audioformat) { + .formats = SNDRV_PCM_FMTBIT_S32_LE, + .channels = 0x12, + .iface = 2, + .altsetting = 1, + .altset_idx = 1, + .endpoint = 0x8e, + .ep_attr = USB_ENDPOINT_XFER_ISOC | + USB_ENDPOINT_SYNC_NONE, + .rates = SNDRV_PCM_RATE_96000, + .rate_min = 96000, + .rate_max = 96000, + .nr_rates = 1, + .rate_table = (unsigned int[]) { 96000 } + } + }, + { + .ifnum = 2, + .type = QUIRK_AUDIO_FIXED_ENDPOINT, + .data = & (const struct audioformat) { + .formats = SNDRV_PCM_FMTBIT_S32_LE, + .channels = 2, + .iface = 2, + .altsetting = 2, + .altset_idx = 2, + .endpoint = 0x8e, + .ep_attr = USB_ENDPOINT_XFER_ISOC | + USB_ENDPOINT_SYNC_NONE, + .rates = SNDRV_PCM_RATE_96000, + .rate_min = 96000, + .rate_max = 96000, + .nr_rates = 1, + .rate_table = (unsigned int[]) { 96000 } + } + }, + { + .ifnum = 3, + .type = QUIRK_MIDI_FIXED_ENDPOINT, + .data = & (const struct snd_usb_midi_endpoint_info) { + .out_cables = 0x0001, + .in_cables = 0x0001 + } + }, + { + .ifnum = -1 + } + } + } +}, /* this catches most recent vendor-specific Roland devices */ { .match_flags = USB_DEVICE_ID_MATCH_VENDOR |