HD DMA problems

[Fernando Schapachnik]

Hi,

Whenever my disk goes under high activity I get:

ad6: TIMEOUT - WRITE_DMA retrying (0 retries left) LBA=111247263
ad6: WARNING - SETFEATURES SET TRANSFER MODE taskqueue timeout - 
completing request directly
ad6: FAILURE - WRITE_DMA timed out LBA=111247135
g_vfs_done():ad6s1g[WRITE(offset=30261575680, length=131072)]
error = 5

And can't get the system back. Tried with a brand new disk and seen 
same results.

Searching yields similar questions, but not answers. Any ideas?

System: amd64 GENERIC 6.1-RELEASE, 
Mother: Asus K8S-MX

atapci1: <SiS 182 SATA150 controller> port
0xec00-0xec07,0xe800-0xe803,0xe400-0xe407,0xe000-0xe003,
0xdc00-0xdc0f,0xd800-0xd87f irq 17 at device 5.0 on pci0
ad6: 76319MB <WDC WD800JD-00LSA0 06.01D06> at ata3-master SATA150


Fernando P. Schapachnik
fernando at schapachnik.com.ar