Re: [LAU] USB sound card via Express Card adapter

On 09/16/2010 10:40 AM, Joan Quintana wrote:
> Due to lack of bandwith with my internal USB bus, like we are discussing in another thread, I ordered a Trust SuperSpeed 2 Port USB 3.0 Laptop Express Card.
>
> $ lsusb -v
> ...
> 1a:00.0 USB Controller: NEC Corporation Device 0194 (rev 03) (prog-if 30)
> Subsystem: NEC Corporation Device 0194
> Flags: bus master, fast devsel, latency 0, IRQ 16
> Memory at f0600000 (64-bit, non-prefetchable) [size=8K]
> Capabilities:<access denied>
> Kernel driver in use: xhci_hcd
> Kernel modules: xhci
> ...
>
> $ lsusb
> Bus 003 Device 002: ID 0582:00e6 Roland Corp.
> Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
> Bus 001 Device 003: ID 0c45:6406 Microdia
> Bus 001 Device 002: ID 8087:0020
> Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
> Bus 002 Device 003: ID 045e:0084 Microsoft Corp. Basic Optical Mouse
> Bus 002 Device 002: ID 8087:0020
> Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
>
> I have a new USB bus, and my Edirol UA25-EX is the only device working in bus #3
>
> $ cat /proc/asound/cards
> 0 [Intel ]: HDA-Intel - HDA Intel
> HDA Intel at 0xf0a00000 irq 22
> 1 [Generic ]: HDA-Intel - HD-Audio Generic
> HD-Audio Generic at 0xcfedc000 irq 17
> 2 [UA25EX ]: USB-Audio - UA-25EX
> EDIROL UA-25EX at usb-0000:1a:00.0-3, full speed
>
> $ cat /proc/interrupts | grep usb
> 16: 91 84 83 88 IO-APIC-fasteoi ehci_hcd:usb1, ohci1394, xhci_hcd:usb3
> 23: 10112 40 2241 34 IO-APIC-fasteoi ehci_hcd:usb2
>
> I have my device working on IRQ 16.
>
> everything seems all right, so I start JACK, and I have this error.
>
> ---
> $ /usr/bin/jackd -p1024 -t2000 -dalsa -dhw:2,0 -r44100 -p256 -n2 -Xraw
>
> jackd 0.118.0
> Copyright 2001-2009 Paul Davis, Stephane Letz, Jack O'Quinn, Torben Hohn and others.
> jackd comes with ABSOLUTELY NO WARRANTY
> This is free software, and you are welcome to redistribute it
> under certain conditions; see the file COPYING for details
>
> Memory locking is unlimited - this is dangerous. You should probably alter the line:
> @audio - memlock unlimited
> in your /etc/limits.conf to read:
> @audio - memlock 2937420
> no message buffer overruns
> JACK compiled with System V SHM support.
> loading driver ..
> SSE2 detected
> apparent rate = 44100
> creating alsa driver ... hw:2,0|hw:2,0|256|2|44100|0|0|nomon|swmeter|-|32bit
> control device hw:2
> configuring for 44100Hz, period = 256 frames (5.8 ms), buffer = 2 periods
> ALSA: final selected sample format for capture: 24bit little-endian
> ALSA: use 2 periods for capture
> ALSA: final selected sample format for playback: 24bit little-endian
> ALSA: use 2 periods for playback
> ALSA: cannot set hardware parameters for playback
> ALSA: cannot configure playback channel
> cannot load driver module alsa
> ---
>
> I suppose that the problem is not JACK related, is ALSA related:
>
> $ aplay -v -D plughw:UA25EX /usr/share/sounds/alsa/Front_Left.wav
> Playing WAVE '/usr/share/sounds/alsa/Front_Left.wav' : Signed 16 bit Little Endian, Rate 48000 Hz, Mono
> aplay: set_params:1053: Unable to install hw params:
> ACCESS: RW_INTERLEAVED
> FORMAT: S16_LE
> SUBFORMAT: STD
> SAMPLE_BITS: 16
> FRAME_BITS: 16
> CHANNELS: 1
> RATE: 48000
> PERIOD_TIME: (125011 125012)
> PERIOD_SIZE: [6000 6000]
> PERIOD_BYTES: (12000 12002)
> PERIODS: (3 4)
> BUFFER_TIME: 500000
> BUFFER_SIZE: 24000
> BUFFER_BYTES: 48000
> TICK_TIME: 0
>
> Another thing: the device is listed in
> $ cat /proc/bus/pci/devices | grep xhci
> and not in
> $ cat /proc/bus/usb/devices
>
> Aany ideas?
>
> Thanks in advance,
> Joan Quintana
>

Hello Joan,

Try hw:UA25EX instead of hw:2,0. In QjackCtl you can enter this manually
in the Interfaces field of the QjackCtl Setup - Settings window.

Best,

Jeremy
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Received on Thu Sep 16 12:15:04 2010