Re: [LAU] ESI Romio II and alsa-midi-latency-test failure

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To: Andre Majorel <aym-psd@...>, <linux-audio-user@...>
Date: Monday, January 27, 2014 - 10:03 am

On Mon, 27 Jan 2014 10:05:20 +0100, Andre Majorel wrote

Is that a USB-1 or a USB-2 device? 5 meters are way above
the USB-1 Specs (3m max.).

> alsa-midi-latency-test -o 24:0 -i 24:1

There are some devices that refuse to work with a hub (no matter
how short the cable is). My -m-Audio Axiom 61 refuses to connect
via a hub - a fact mentioned in the fine manual but _not_ in any
promotional material :-(

I think this is either a bug in their Usb chip firmware or some
engineer tried to be oversmart (i.e. hubs might introduce latency/jitter
hence we won't work with hubs).

HTH Ralf Mattes

> It is a 7-port powered USB hub (Heden HUBUSB7PCB / HUBUSB7PCW).

--
R. Mattes -
Hochschule fuer Musik Freiburg
rm@inm.mh-freiburg.de

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Messages in current thread:
[LAU] ESI Romio II and alsa-midi-latency-test failure, Andre Majorel, (Sun Jan 26, 9:29 am)
Re: [LAU] ESI Romio II and alsa-midi-latency-test failure, Clemens Ladisch, (Sun Jan 26, 1:56 pm)
Re: [LAU] ESI Romio II and alsa-midi-latency-test failure, Andre Majorel, (Sun Jan 26, 9:55 pm)
Re: [LAU] ESI Romio II and alsa-midi-latency-test failure, Andre Majorel, (Mon Jan 27, 9:05 am)
Re: [LAU] ESI Romio II and alsa-midi-latency-test failure, R. Mattes, (Mon Jan 27, 10:03 am)
Re: [LAU] ESI Romio II and alsa-midi-latency-test failure, Andre Majorel, (Tue Jan 28, 1:54 pm)
Re: [LAU] ESI Romio II and alsa-midi-latency-test failure, Gordon JC Pearce, (Mon Jan 27, 10:40 am)