Bryan J. Smith wrote: >"Paul R. Ganci" <ganci at nurdog.com> wrote: > > >>Alas, I have the original BIOS installed. I was checking >>and it does appear there are BIOS updates available. >> >Actually, the overwhelming majority of PowerNow/Cool'n Quiet >issues I've seen are due to inappropriate APIC/ACPI/POST >setup by the BIOS. Nearly all BIOS updates fix these issues >in my experience. > Well I did more research and have to clarify my statement. The installed BIOS is v4.05 which indeed was the original BIOS is actually only one version below the last BIOS provided by Tyan for the Tiger MPX (S2466N-4M). The new features and fixes for v4.06 are: Fixes bios resetting during reboot issue. Fixes hang on shutdown issue when no keyboard is present. I find it hard to believe that flashing the BIOS to v4.06 is going to fix the mptscsi problem. I did install 2.6.9-27.ELsmp. This kernel has the same problem as the 2.6.9-22.0.1.ELsmp. The actual error messages look like: MPTSCSI: ioc0: attempting task abort! (sc=f24891c0) SCSI: destination target 1, lun 0 command = Test Unit Ready 00 00 00 00 00 MPTSCSI: ioc0: task abort: SUCCESS (sc=f24891c0) These messages scroll up the monitor with the target drive and sc address changing. This system is only stable if I run 2.6.9-11.ELsmp. Unfortunately I don't find any other information in the log file related to the SCSI errrors indicated above ... the system clearly can't write to the drives and the raid5 array is corrupted. Again I find it hard to believe that the BIOS can be responsible since the system is so stable using kernel 2.6.9-11.ELsmp. I have placed the latest dmesg log, an excerpt of the messages log and my grub.conf in http://www.nurdog.com/~ganci/crash/dmesg, http://www.nurdog.com/~ganci/crash/messages and http://www.nurdog.com/~ganci/crash/grub.conf respectively, in case someone would like to take a look. I would really like to get to the root of this problem and will be happy to provide any other information for anyone willing to help me debug this problem. In the meantime I will just run with 2.6.9-11.ELsmp. Thanks for any help. -- Paul (ganci at nurdog.com)