[linux-audio-dev] Linux/Alsa Tascam US-122 Issues

[Antonio Willy Malara]

hello everybody!

i've finally got an usb-audio card for my linux audio madness, i've  
taken a tascam us122, beacuse of the good support it has, infact i was  
able to use it, i've not tested it extensively because i was moving and  
my laptop had a desperate need of a reinstalling :P

i've reinstalled this ibook with a net-installed debian sid and the  
first thing i've done was compiling the same alsa and kernel versions,
linux vanilla 2.6.8.1 and alsa-driver 1.0.6a, alsa-lib 1.0.6 but all  
alsa wont work...

with the internal powermac audio card (which was working) i got a  
undefined referece, in compile time (but not fatal, since the module is  
compiled) and in inserting time:

Zeryn:/home/willy# modprobe snd-powermac
snd_powermac: Unknown symbol num_controls
Zeryn:/home/willy#

but i can live without it, i have the oss module and i plan to not use  
it anymore, because the tascam card will be conencted to everything in  
my setup, but the strangest things happened when i tried to plug the  
usb-usx2y module: a variety of freezes, kernel panics, oops, so i've  
tried to compile different versions of alsa and kernel, i've tried  
combinations of:

linux 2.4.27, 2.6.8, 2.6.7, 2.6.9-rc2, 2.6.9-rc2-bk9
alsa 1.0.6, 1.0.6a, 1.0.7rc1, alsa-cvs (alsa cvs was broken)

now i got the same error over and over again, the hotplug scrits are  
loading the firmware, the module is correctly loaded and the card is  
powering up well and the usb led keeps to stay on, but, when i try to  
launch jack or an audio application i got some messages regarding  
"sequence errors" and i have to kill the application via ctrl-c, if i  
restart the application i have a freeze (no kernel panics or such)

this is the kernel log from kernel module loading to the freeze

---

Sep 26 05:34:27 (none) kernel: usbcore: registered new driver snd-usb- 
usx2y

Sep 26 05:34:37 (none) kernel: ohci_hcd 0001:01:18.0: wakeup
Sep 26 05:34:37 (none) kernel: usb 1-1: new full speed USB device using  
address 2

Sep 26 05:34:38 (none) kernel: usb 1-1: USB disconnect, address 2
Sep 26 05:34:39 (none) kernel: ohci_hcd 0001:01:18.0: wakeup
Sep 26 05:34:40 (none) kernel: usb 1-1: new full speed USB device using  
address 3

Sep 26 05:35:12 (none) kernel: ALSA /home/willy/Pacchi/alsa/alsa- 
driver-1.0.6a/kbuild/../usb/usx2y/../../alsa-kernel/usb/usx2y/ 
usbusx2yaudio.c:30
4: Sequence Error!(ep=10;nuc=0,frame=34039)

Sep 26 05:35:12 (none) kernel: ohci_hcd 0001:01:18.0: bad entry   
50ce000

Sep 26 05:35:19 (none) kernel: ALSA /home/willy/Pacchi/alsa/alsa- 
driver-1.0.6a/kbuild/../usb/usx2y/../../alsa-kernel/usb/usx2y/ 
usbusx2yaudio.c:37
0: timeout: still 9 active urbs..

Sep 26 05:35:20 (none) kernel: ALSA /home/willy/Pacchi/alsa/alsa- 
driver-1.0.6a/kbuild/../usb/usx2y/../../alsa-kernel/usb/usx2y/ 
usbusx2yaudio.c:37
0: timeout: still 2 active urbs..

---

everyone knows this issue? or knows the versions of alsa/kernel this  
card will work well? the device is surely working because i use well on  
osx with audacity

sorry for the long post, but i've tried everything i know.. whit the  
exception of voodoo programming :P

wil
---
Il jazz e' lasciare che la luce brilli, lasciarla essere.
		-- Keith Jarrett