p IV HTT hard drive time out

[Tim Kellers]

With Hyperthreading turned on in the Processor BIOS, I'm getting these kernel
messages (and sometimes a system hang that requires a power-off restart)

Dell Dimension 4600c Pentium IV HTT and a SATA hard drive

ad4: TIMEOUT - READ_DMA retrying (2 retries left) LBA=206037879
ad4: TIMEOUT - WRITE_DMA retrying (2 retries left) LBA=41943295
ad4: TIMEOUT - WRITE_DMA retrying (2 retries left) LBA=64276927
ad4: TIMEOUT - WRITE_DMA retrying (2 retries left) LBA=64283327
Mar 15 12:30:42 zeebo su: timothyk to root on /dev/ttyp2

With Hyperthreading disabled in BIOS, I have no problem.

my uname -a:

FreeBSD zeebo.maestro.njit.edu 5.2-CURRENT FreeBSD 5.2-CURRENT #7: Mon Mar 15
10:44:53 EST 2004     root at zeebo.maestro.njit.edu:/usr/obj/tmp/src/sys/***
i386


Thanks

Tim Kellers
CPE/NJIT