On Wed, Jul 13, 2011 at 5:27 AM, Daniel Mack <zonque@xxxxxxxxx> wrote: > Can you check the value of the "ctrlif" argument in snd_usb_create_mixer()? Two instances: ctrlif = 0, ctrlif = 3. Here's the relevant kernel log snippet: [ 428.011513] ALSA sound/usb/endpoint.c:434: 3:1:1: add audio endpoint 0x1 [ 428.468322] ALSA sound/usb/endpoint.c:434: 3:2:1: add audio endpoint 0x82 [ 428.925048] ALSA sound/usb/endpoint.c:434: 3:2:2: add audio endpoint 0x82 [ 429.381549] ALSA sound/usb/mixer.c:2224: ctrlif = 0 [ 429.381556] ALSA sound/usb/mixer.c:1888: hack: subtype = 6, unitid = 10 [ 429.381560] ALSA sound/usb/mixer.c:1888: hack: subtype = 9, unitid = 51 [ 429.381563] ALSA sound/usb/mixer.c:1913: Ignoring UAC2_EXTENSION_UNIT [ 429.381566] ALSA sound/usb/mixer.c:1997: Unable to parse terminal with bSourceID 10 [ 429.381569] ALSA sound/usb/mixer.c:1888: hack: subtype = 11, unitid = 40 [ 429.381572] ALSA sound/usb/mixer.c:1888: hack: subtype = 10, unitid = 41 [ 429.381575] ALSA sound/usb/mixer.c:1888: hack: subtype = 10, unitid = 42 [ 429.381578] ALSA sound/usb/mixer.c:1888: hack: subtype = 10, unitid = 43 [ 429.382020] ALSA sound/usb/mixer.c:1863: [40] SU [Scarlett 18i6 USB-Sync] items = 3 [ 429.382025] ALSA sound/usb/mixer.c:1888: hack: subtype = 6, unitid = 11 [ 429.382029] ALSA sound/usb/mixer.c:1888: hack: subtype = 9, unitid = 52 [ 429.382032] ALSA sound/usb/mixer.c:1913: Ignoring UAC2_EXTENSION_UNIT [ 429.382035] ALSA sound/usb/mixer.c:1997: Unable to parse terminal with bSourceID 11 [ 429.382240] ALSA sound/usb/card.c:152: 3:3:1: skipping, already claimed [ 429.382244] ALSA sound/usb/mixer.c:2224: ctrlif = 3 [ 429.382248] ALSA sound/usb/mixer.c:1888: hack: subtype = 6, unitid = 10 [ 429.382251] ALSA sound/usb/mixer.c:1200: usbaudio: unit 10: invalid bControlSize == 0 [ 429.382255] ALSA sound/usb/mixer.c:1984: Unable to parse terminal with bSourceID 10 [ 429.382258] ALSA sound/usb/mixer.c:1888: hack: subtype = 6, unitid = 11 [ 429.382261] ALSA sound/usb/mixer.c:1200: usbaudio: unit 11: invalid bControlSize == 0 [ 429.382264] ALSA sound/usb/mixer.c:1984: Unable to parse terminal with bSourceID 11 I've downloaded the USB Audio spec v2.0, and I'll hopefully have time to poke at this a bit more on Sunday. nicolai ------------------------------------------------------------------------------ AppSumo Presents a FREE Video for the SourceForge Community by Eric Ries, the creator of the Lean Startup Methodology on "Lean Startup Secrets Revealed." This video shows you how to validate your ideas, optimize your ideas and identify your business strategy. http://p.sf.net/sfu/appsumosfdev2dev _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user
