Can not capture 24-bit audio with EMI 6|2 & ALSA 1.0.11

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Hello!

I am having a strange problem with Emagic EMI 6|2 USB sound card and ALSA
1.0.11. The setup I am running is a Fedora Core 5 with kernel, alsa and jack
from Planet CCRMA. The strange thing is that the very same hardware has been
working perfectly earlier with FC3 (do not remember exact ALSA revision) and
even on Red Hat 9 on a 2.4 series kernel! The kernel I am running is a 2.6.16-1
with realtime pre-empt enabled.

This is what happens:

I start Jack forcing it to use 16-bit samples -everything is fine.
I start Jack with playback only with 24-bit samples -everything is fine again.

I try to start Jack in Duplex mode with 24-bit samples and I get this output
from jack:

Jack output:

21:13:47.811 jackd -v -R -m -dalsa -r44100 -p256 -n4 -D -Chw:3 -Phw:3 -i2 -o2
<-- removed lines -->
client alsa_pcm: internal client, execution_order=0.
-- jack_rechain_graph()
ALSA: could not start playback (Broken pipe)
DRIVER NT: could not start driver
cannot start driver
starting server engine shutdown
21:13:53.047 Could not connect to JACK server as client. Please check the
messages window for more info.
stopping driver
jackd watchdog: timeout - killing jackd
could not attach as JACK client (server has exited)

When this happens this pops into the system log in /var/log/messages:

Nov  2 21:13:48 Computer kernel: ALSA
/usr/src/rpm/BUILD/alsa-driver-1.0.11/usb/usbaudio.c:864: cannot submit datapipe
for urb 0, error -28: not enough bandwidth
Nov  2 21:13:53 Computer kernel: ohci_hcd 0000:00:03.0: leak ed f59371c0 (#8c)
state 2

This makes me think that something is wrong with ALSA - not jack or the kernel.
Or could this be just a configuration error?

I tried to dig everything I could find on this from ALSA wiki and mailing lists
and tried every trick I found - loading the kernel module with different nrpacks
settings, etc. but with no luck.

Pointers on what to do next would be highly appreaciated!

Thanks,

Jorma



-------------------------------------------------------------------------
Using Tomcat but need to do more? Need to support web services, security?
Get stuff done quickly with pre-integrated technology to make your job easier
Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo
http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
_______________________________________________
Alsa-user mailing list
Alsa-user@xxxxxxxxxxxxxxxxxxxxx
https://lists.sourceforge.net/lists/listinfo/alsa-user

[Index of Archives]     [ALSA Devel]     [Linux Audio Users]     [Fedora Users]     [Fedora Desktop]     [Fedora SELinux]     [Big List of Linux Books]     [Yosemite News]     [Yosemite Photos]     [KDE Users]     [Fedora Tools]

  Powered by Linux