> > > > 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. > > Where are the lowlat and preempt patches for 2.4.20?
Not on the net at this point. I have been hand tweaking the originals to patch cleanly (trying to fix the failing chunks). I can email them to you, use at your own risk :-) BTW, results in my current tests are inconclusive, a couple of times I managed to freeze the machine soon after I started just jackd and qjackconnect. I'm currently trying to see if I can stat the stuff from the text console so that I can try to catch some register dumps through the sysrq magic key... -- Fernando