[linux-audio-dev] Re: [Jackit-devel] 2.4.20-rc1Â + lowlat + preempt + alsa + jack = dead computer

[Fernando Pablo Lopez-Lezcano]

> Fernando Pablo Lopez-Lezcano wrote:
> 
> > Have you tried anything in between pre10-ac3 and pre4? I know pre4 works 
> > fine. I probably should post to the lkml with as much detail as we can 
> > get (unless some kernel hacker is actually reading these messages). 
> 
> I've tried every kernel from 2.4.20-pre5 up to 2.4.20-pre10, and again
> 2.4.20-pre10-ac3, which caused a lockup on my system in the past, this
> afternoon. And I couldn't reproduce even _one_ lockup. I use another IDE
> interface though: a cmd649 add-on controller. The lockups happened with
> the onboard IDE interface (VIA KT333 chipset, vt8235 southbridge).

To add one more datapoint to the thread and (apparently good news): I'm
testing 2.4.20 (final) + lowlat + preempt + acpi + alsa + jack and the
computer seems to be chugging along nicely. This is with today's alsa. A
slighly older alsa did lock the computer after 5 or so minutes of jack
activity but I managed to reboot it with the sysrq magic key. With the
newest alsa I got jack + freqtweak + ams (with the demo patch) running
for 50 minutes until for some reason jack died due to a watchdog
interrupt. Not bad. 

-- Fernando