IBM xSeries 345 freezes after 15 min. (4.8, 5.0, 5.1, current)

[naroz at gmx.net]

Hello,

I'm really depressed and hope someone can help me here.

Hardware:
IBM xSeries 345 Server, 2 x Xeon 2.8 GHz 533, 2 x 512MB IBM ECC RAM, ICP
Vortex GDT8514RZ RAID, 5 x IBM 36GB HDD U320. The server comes with an IBM
serveRaid 5-i controller but I replaced it with the ICP controller, because of the
known FreeBSD ips driver bug.

I have installed FBSD 4.8 and everything looks fine. But it does not matter
what I am doing after the installation, the server freezes after
approximately 15 mins. The same happens with a new compiled kernel too. dmesg shows no
problems.

After that I tried to install fbsd 5.0, 5.1, current and I realized the same
behavior - well, with a slight difference: the keyboard freezes at boot
process: "atkbd unable to set the command byte". I musst disable ACPI to
continue...

Remarks -
after the server freezes:

- no warnings on screen
- the server ist still pingable
- the ssh client does not disconnect - I can still type but without reaction
- system temperature is o.k.
- I tried 2 different rams
- I tried a different raid controller with external hdds

linux runs without problems...


Thanks.

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