Messages in this thread | | | Date | Fri, 29 Jun 2007 13:24:56 +0200 (CEST) | Subject | 2.6.21-rt9 problem : xruns | From | <> |
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Hi,
I've recently compiled a "vanilla" 2.6.21 kernel, patched with Ingo Molnar's rt-8 patch, as I was unable to compile with rt-7.
I needed it because I'm using audio applications (tests were made with FrugalWare, but I don't think it's a distro issue).
Everything was allright until I changed my motherboard for an Asrock 4coreDual-Vsta (I formerly used a Nforce4 one), with VIA PT880 Ultra chipset.
I've justed switched the hardware, as Linux is neat enough to boot without having to reinstall the whole OS.
Since, I get tons of xruns when using RT applications, and the only solution I've found to "fix" it was to disable ACPI at boot time. Moreover, I get this message at boot time : PCI: BIOS bug: MCFG area@e0000000 is not E820 reserved PCI: not using MMCONFIG
I've also tested this hardware setup with a UbuntoStudio kernel (2.6.19), and everything works flawlessy (no XRUNS, no kernel messages) !
So here is my question (I'd like to understand what's happening) : - is it a kernel (or patch) issue ? - is it a bad chipset support in the latest kernel versions ? - could this be related to BIOS issues only (I've tried all available versions without any change) ? - should I use special settings in the ".config" in order to avoid these problems ?
I wasn't able to detect what causes these XRUNS, so if anyone has clues ...
Regards skb
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