Messages in this thread | | | Subject | Re: 2.6.15-rt20, "bad page state", jackd | From | Fernando Lopez-Lezcano <> | Date | Thu, 09 Mar 2006 18:47:46 -0800 |
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On Fri, 2006-03-10 at 09:57 +1100, Nick Piggin wrote: > Fernando Lopez-Lezcano wrote: > > > In my case it is completely repeatable. > > Boot, start jackd, stop jackd -> problem appears. > > > > This does not happen on all computers so it would seem to me it is > > related to the sound drivers. I'll try to see if there is a correlation > > with the sound card being used. > > > > Is there anything else I could do to try to help resolve this? > > Can you test with the latest mainline -git snapshot, or is it only > the -rt tree that causes the warnings?
I found something strange although I don't know why it happens yet:
Fedora Core 4 kernel (2.6.15 + patches) works fine. Fedora Core 4 kernel + -rt21, [ahem... sorry], works fine. Fedora Core 4 kernel + -rt21 + alsa kernel modules from 1.0.10 or 1.0.11rc3, fails[*] Plain vanilla 2.6.15 + -rt21, works fine Plain vanilla 2.6.15 + -rt21 + alsa kernel modules from 1.0.10 or 1.0.11rc3, fails[*]
So, it looks like it is some weird interaction between kernel modules that were not compiled as part of the kernel and the kernel itself. The "updated" modules are installed in a separate location (not on top of the built in kernel modules) and are found before the ones in the kernel tree.
I have been building this combination for a long long time with no problems, I don't know what might have happened that changed things.
Could be: - configuration problems? - the alsa tree is somehow incompatible with the kernel alsa tree, is that even possible?
I have _no_ idea on what to start looking for... but, oh well, this is a start. Suggestions welcome. Thanks for somehow pointing me in the right direction.
-- Fernando
[*] I need that because of cards not yet included in the kernel proper, and fixes that have not yet percolated to the kernel alsa tree.
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