From: Clemens Ladisch <clemens@ladisch.de>
To: Cyrus Harmon <cyrus@bobobeach.com>, alsa-devel@alsa-project.org
Subject: Re: [PATCH] add Steinberg UR44 USB Audio Interface support to quirks-table
Date: Mon, 10 Mar 2014 16:40:52 +0100 [thread overview]
Message-ID: <531DDD04.5050902@ladisch.de> (raw)
In-Reply-To: <76F78615-8762-4A6C-B601-97380805F450@bobobeach.com>
Cyrus Harmon wrote:
> The attached patch provides support for the Steinberg UR44 USB Audio
> Interface. It’s nothing more than Clemens’ patch to support the UR22,
> with the device ID modified for the UR44. The patch was tested with
> kernel versions 3.12.11 and 3.12.12 and I have primarily used it with
> a PREEMPT RT-patched 3.12.12-rt kernel.
In theory, kernel 3.11 and later should support this device without
a quirk entry. I guess it actually does not?
> I should note that on one of the systems that I used to test the patch
> I was never able to achieve xrun-free JACK performance at -p256 -n3 as
> I would invariably see xruns roughly once every minute.
This sounds as if the playback stream needs to be synchronized to the
recording stream.
What is the output of "lsusb -v" for this device?
Regards,
Clemens
next prev parent reply other threads:[~2014-03-10 15:40 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-03-09 18:12 [PATCH] add Steinberg UR44 USB Audio Interface support to quirks-table Cyrus Harmon
2014-03-10 9:42 ` Takashi Iwai
2014-03-10 12:07 ` Clemens Ladisch
2014-03-10 15:26 ` Cyrus Harmon
2014-03-10 15:30 ` Takashi Iwai
2014-03-10 15:40 ` Clemens Ladisch [this message]
2014-03-11 6:33 ` Cyrus Harmon
2014-03-11 8:31 ` Clemens Ladisch
2014-03-11 9:30 ` Cyrus Harmon
2014-03-17 16:29 ` Cyrus Harmon
2014-11-04 0:36 ` Cyrus Harmon
2014-11-04 6:28 ` Takashi Iwai
2014-11-04 8:55 ` Cyrus Harmon
2014-11-05 23:14 ` Takashi Iwai
2014-11-06 4:39 ` Cyrus Harmon
2014-11-06 5:28 ` Vlad Catoi
2014-11-06 5:32 ` Cyrus Harmon
2014-11-06 13:46 ` Vlad Catoi
2014-11-04 8:59 ` Clemens Ladisch
2014-11-04 9:00 ` Clemens Ladisch
2014-11-05 18:16 ` Cyrus Harmon
2014-11-05 21:17 ` Clemens Ladisch
2014-11-06 5:47 ` Cyrus Harmon
2014-11-15 13:00 ` Clemens Ladisch
2015-02-03 7:14 ` Cyrus Harmon
2014-11-06 16:05 ` Cyrus Harmon
2014-11-06 16:49 ` Takashi Iwai
2014-11-06 16:54 ` Cyrus Harmon
2014-11-08 4:24 ` Vlad Catoi
2014-11-08 4:25 ` Vlad Catoi
2015-02-03 6:56 ` Cyrus Harmon
2015-02-03 9:02 ` Takashi Iwai
2014-11-06 17:32 ` Clemens Ladisch
-- strict thread matches above, loose matches on Subject: below --
2014-03-10 15:37 Cyrus Harmon
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