[alsa-devel] [PATCH 2/5] ALSA: snd-usb: implement new endpoint streaming model

Daniel Mack zonque at gmail.com
Thu Dec 22 20:04:36 CET 2011

On 12/22/2011 06:55 PM, Aurélien Leblond wrote:
>> Which hardware is connected? Did you try that with both? Did you try
>> with anything else than jack? I'd need more information about your setup
>> to get an idea.
> Ok, here is a bit more info: I'm running a 64bit Ubuntu Oneiric.
> Kernel is the 3.2 rc6.
> With the M-Audio Fast Track Ultra:
> - Alsa is working ok. That is, I can read a mp3 with mplayer without
> any problem for example.
> - As soon as I start Jackd2, my whole system freezes.
> - 3.2 rc4 and the previous version of your patch, all was working ok
> with the FTU.
> With the Edirol UA25-Ex:
> - It was working with 3.2 rc and the previous version of your patch.
> - With the current version, the soundcard doesn't work at all. The
> following trace appears in dmesg:
> [   33.724071] BUG: unable to handle kernel NULL pointer dereference

Ok, thanks. I'll breed on this a little and let you know when I have
s.th. to share.

Thanks for the feedback!


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