Re: [linux-audio-dev] Re: [Jackit-devel] 2.4.20-rc1 + lowlat + preempt + alsa + jack = dead computer

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Subject: Re: [linux-audio-dev] Re: [Jackit-devel] 2.4.20-rc1 + lowlat + preempt + alsa + jack = dead computer
From: Fernando Pablo Lopez-Lezcano (nando_AT_ccrma.Stanford.EDU)
Date: Sat Dec 07 2002 - 01:41:41 EET


> 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


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