From: Stefan R. <st...@s5...> - 2011-07-15 12:54:43
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On Jul 15 Andy Campbell wrote: [new kernel config and ext4 mount options] > So, it looks like latencytop reports something different after > changing to barriers=0, but I still get high latency and unhandled > XRUNs in jackd > > This hardware worked perfectly on Fedora 14 (using my own modules > compiled for the old stack), and stopped working as soon as I moved to > Fedora 15 (new stack, no option to compile old stack). I am thinking > about deleting the box and reinstalling Fedora 14 again, but I guess > that's not a long term fix... On June 15, Doug McLain posted on ffado-user how he compiles drivers/ieee1394/ for kernels >= 2.6.37. You could try that and see whether unhandled xruns turn to handled xruns or vanish entirely with {ohci,ieee,raw}1394 instead of firewire-{ohci,core} on your current F15 kernel. Copy drivers/ieee1394/ e.g. from kernel.org's 2.6.36 tarball and apply the first or both hunks of Doug's patch. The first hunk takes care of a filesystem core symbol that has been removed in later kernels, the second hunk is for builds outside of a full kernel source tree (hence not necessary for you since you now have a source + build files tree of the entire F15 kernel). -- Stefan Richter -=====-==-== -=== -==== http://arcgraph.de/sr/ |