From: Daniel Mack <daniel@zonque.org>
To: Dr Nicholas J Bailey <nicholas.bailey@glasgow.ac.uk>,
alsa-devel@alsa-project.org
Subject: Re: usb-usx2y: playback fails with Tascam US122 on kernel 3.14
Date: Wed, 06 Aug 2014 19:19:22 +0200 [thread overview]
Message-ID: <53E2639A.4070506@zonque.org> (raw)
In-Reply-To: <1799623.GgHbzoqWFu@arial>
On 08/06/2014 06:43 PM, Dr Nicholas J Bailey wrote:
> On Thursday 26 June 2014 15:51:54 Dr Nicholas J Bailey wrote:
>> I am having trouble with the US122 in playback and duplex mode. In capture
>> mode, it is working.
>>
>> This problem occurs on (at least)
>> Linux arial 3.14-1-686-pae #1 SMP Debian 3.14.7-1 (2014-06-16) i686
>> GNU/Linux
>>
> Further information:
>
> Using this kernel:
>
> Linux arial 3.14-2-686-pae #1 SMP Debian 3.14.13-2 (2014-07-24) i686 GNU/Linux
>
> trying to use the US-122 Tascam box results in the following showing up in
> dmesg. I have unplugged and reconnected the box twice to get the LEDs to light
> up. This has been the normal behaviour for as long as I can remember. You can
> only use the Tascam as capture device on this kernel.
>
> Using this kernel:
>
> Linux arial 3.10.11 #1 SMP Wed Oct 2 19:26:59 BST 2013 i686 GNU/Linux
>
> the US-122 works fine for simultaneous capture and playback.
>
> I've looked at the difference in the source code between 3.10 and 4.14 and
> there is very little in the usb-usx2y alsa module. Is there some midi-related
> change I should know about?
This driver is unfortunately poorly supported by the community. Very few
people have such a device, the driver has ample areas it needs cleanups
in, and the original author is unfortunately unresponsive.
The best thing you can do is probably bisect the issue:
https://wiki.ubuntu.com/Kernel/KernelBisection
> I understand that the US-122 is a usb-1.1 device and I have the ehci module
> loaded, but it was there too with the older kernel and that worked fine.
Yes, that shouldn't be an issue. Let us know what the bisection tells you.
Daniel
next prev parent reply other threads:[~2014-08-06 17:19 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-06-26 14:51 usb-usx2y: playback fails with Tascam US122 on kernel 3.14 Dr Nicholas J Bailey
2014-08-06 16:43 ` Dr Nicholas J Bailey
2014-08-06 16:45 ` Dr Nicholas J Bailey
2014-08-06 17:19 ` Daniel Mack [this message]
2014-08-08 6:13 ` Takashi Iwai
2014-08-20 17:50 ` Dr Nicholas J Bailey
2014-08-21 7:02 ` Takashi Iwai
2014-08-21 16:14 ` Dr Nicholas J Bailey
2014-08-21 16:16 ` Takashi Iwai
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