> How are you testing, exactly? I am using the jackd server and choosing GT-100 as the device; the server cannot start with the device. > Does the same test setup work with a different USB audio device? Yes, I am using a USB based Plantronic USB headset with the same exact procedure as above and I am able to listen and record with this headset. > This device should be handled by the generic Roland quirk. Agreed. I am not able to locate this file under /usr/src/kernel/**my version**/drivers/usb/core/quirks-table.h to modify the USB device ID as shown below. I got the hint from http://comments.gmane.org/gmane.linux.alsa.user/36297 { USB_DEVICE(0x0582, 0x0189), .driver_info = (unsigned long) & (const struct snd_usb_audio_quirk) { /* .vendor_name = "BOSS", */ /* .product_name = "GT-100", */ .ifnum = QUIRK_ANY_INTERFACE, .type = QUIRK_COMPOSITE, .data = (const struct snd_usb_audio_quirk[]) { { .ifnum = 1, .type = QUIRK_AUDIO_STANDARD_INTERFACE }, { .ifnum = 2, .type = QUIRK_AUDIO_STANDARD_INTERFACE }, { .ifnum = 3, .type = QUIRK_MIDI_FIXED_ENDPOINT, .data = & (const struct snd_usb_midi_endpoint_info) { .out_cables = 0x0001, .in_cables = 0x0001 } }, { .ifnum = -1 } } } }, > What about the firmware? Did you update the device, and now it doesn't > work anymore as it did before? I never really tried to record with the previous firmware -- So I am really not sure if the input was functional. However I was able to play sound out using the previous firmware. > What's the suspected relation between the firmware and the issue you're seeing? Previously I didn't see the Error: ALSA endpoint.c:786 Unable to change format on ep #8e: already in use I don't think I can revert back to the previous firmware anymore to check as the fw updater utility prevents me. I also notice that GT-100 bus id Was "Bus 002 Device 014: ID 0582:014d Roland Corp." but now is "Bus 001 Device 006: ID 0582:0189 Roland Corp." .. leading me to believe something is not recognized and initialized properly. So, is there anyway I can get the alsa quirk-kernel.h in my kernel tree such that I can include the new ID and recompile the module? May be I am on the wrong path here. I really appreciate you taking the time to help. Thanks George ------------------------------------------------------------------------------ _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user
