Originally Posted by retsaw

I'm not sure why I was successful the first time I tried it, but I haven't been able to replicate that success. However, it wasn't dsme triggering the reboot, but one of the watchdogs, I put my N900 into R&D mode and disabled the watchdogs and now it just locks up for a while rather than rebooting, and I did at least get some interesting debug output in dmesg, I guess it is some sort of issue with the USB drivers that pulseaudio presumably triggers, I've attached the relevant dmesg output to this post and maybe someone will be able to make sense of it.

Originally Posted by retsaw

Thanks, but I couldn't see the relevance of those links.

But I was running it in full speed mode since I couldn't get it working in high speed mode, and even plugged into my netbook it seems to connect to the USB sound card in full speed mode, however I tried it on my other N900 and that did connect in high speed mode. And I did get it working again for a while on that N900 with pulseaudio, however when I switched pulseaudio back to internal speakers and then tried to switch back to the USB soundcard again, it locked up requiring me to unplug the USB soundcard to get my N900 responding again, and it resulted in another lot of messages in dmesg which were similar, but not identical.

Originally Posted by retsaw

I don't honestly know.

However, I remember (and hopefully I'm not mis-remembering here) reading/hearing an interview with a pulseaudio developer who said something about pulseaudio using features in sound card drivers that aren't normally used and consequently weren't tested properly and therefore exposing bugs in the drivers, so my money is on it being a problem with the snd_usb_audio driver and musb is just showing up in the trace just because the driver uses it. I'm guessing here but I suspect backporting a newer version of the snd_usb_audio driver will fix this, but I could be on the wrong track.

Maybe some debug info from pulseaudio would be useful here, anyone know how to get it?

Originally Posted by pablocrossa

This makes sense, it is the FIFO error that I find strange
can we restart the service with a debug/verbose option?? I cannot find anything of the sort with

Code:

sudo portaudio --help

EDIT: can you link me to the snd_usb_audio source?? is it a module from the kernel??

Originally Posted by pablocrossa

I cannot even find the module on the N900, I have power46 so maybe it was added later :P do you guys have it

Code:

find / -name snd_usb_audio

Do we even have the soundcore module

Originally Posted by retsaw

Try

Code:

find / -name snd-usb-audio.ko

I don't know if it is in power46 as I'm running v49 and v50 on my N900s.

For the kernel-power source, you can find download instruction in the kernel-power devel thread.

Originally Posted by pablocrossa

your command finds nothing (the .ko should not make a difference).