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#1 2013-01-29 05:34:39

cadilhac
Member
Registered: 2012-04-27
Posts: 11

TASCAM US144 stopped working: only midi interface? ioctl not called?

Hi there people;

I've searched a lot on this problem, so it seems that you people are my Last Hope.  My TASCAM US144 (using kernel module snd_usb_us122l and alsa plugin usb_stream) stopped working beyond my comprehension.  I helped the folks at ALSA a few years ago to make usb_stream work with the device, but now I can't understand a thing.

Here is what I can say:
- The card is displayed in /proc/asound/cards as:

 1 [US122L         ]: USB US-122L - TASCAM US-122L
                      TASCAM US-122L (644:800f if 0 at 005/016)

- The /proc/asound/card1 folder contains:

-r--r--r-- 1 root root 0 Jan 29 00:19 id
-r--r--r-- 1 root root 0 Jan 29 00:19 midi0

with no sign whatsoever of pcm's or usb_stream's.  Accordingly, /proc/asound/devices only shows:

 10: [ 1- 0]: hardware dependent
 11: [ 1- 0]: raw midi
 12: [ 1]   : control

- I've traced the kernel module with no success.  My conclusions are that usb_stream_hwdep_new is indeed called, but usb_stream_hwdep_ioctl (where a good part of the work is done) is not.  I'm pretty sure it used to be called.

I'm deeply sorry that I have no more info to report.  This post problably is a lost cause, as was this guy's post with the same problem — he elected to throw away his device...

My ALSA info is here:  http://www.alsa-project.org/db/?f=468f4 … 40d7d5810f

Thanks a lot for any input.

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#2 2013-01-31 06:04:32

cadilhac
Member
Registered: 2012-04-27
Posts: 11

Re: TASCAM US144 stopped working: only midi interface? ioctl not called?

Well, it seems that PEBKAC.  Anyway, for anyone having the same concerns:
- All the outputs mentioned previously are normal and not the result of a bug/problem.
- If your aplay is segfault'ing, it probably displays the right info, that is, "Unable to install hw params".  Jackd segfault's with less verbosity.  In my case, I had (for a reason I can't conceive) a wrong period size.

Sorry for the noise.

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