Hi, I've installed Centos 5.5 (plus updates) in a machine with INTEL DP43BF motherboard. In order to make Linux detect the PCIs I've added the pci=assign-busses in my GRUB conf. Everything runs fine but within less than 2 days of uptime the machine simply freezes (black console no connectivity). This has happened more than one time so I'm considering to be a problem. The memtest passed without a problem and the machine uses a compact flash (sandisk extreme III 4GB) as a disk. I could only find the error messages in my /var/log/messages but those appear hours before the actual lock. kernel: 0000:00:1a.7 EHCI: BIOS handoff failed (BIOS bug ?) 01010001 kernel: 0000:00:1d.7 EHCI: BIOS handoff failed (BIOS bug ?) 01010001 kernel: eth4: PCI Bus error a290. kernel: eth4: PCI Bus error 0290. kernel: eth3: PCI Bus error 2290. kernel: eth3: PCI Bus error 0290. Any tips? -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos/attachments/20101227/e2493d6b/attachment-0004.html>