Comment 106 for bug 285892

Same issue here.

OS: Ubuntu Server lucid
Kernel: 2.6.38-7-generic (kernel-ppa)
HD: WDC WD10EARS-00Y

Error:

[ 222.848056] ata2: lost interrupt (Status 0x50)
[ 222.848094] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen
[ 222.848166] ata2.00: failed command: READ DMA EXT
[ 222.848234] ata2.00: cmd 25/00:60:e0:a6:a7/00:00:4d:00:00/e0 tag 0 dma 49152 in
[ 222.848238] res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout)
[ 222.848353] ata2.00: status: { DRDY }
[ 222.848414] ata2: soft resetting link
[ 223.056419] ata2.00: configured for UDMA/133
[ 223.056436] ata2.00: device reported invalid CHS sector 0
[ 223.056465] ata2: EH complete
[ 973.008042] ata2: lost interrupt (Status 0x50)
[ 973.008080] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen
[ 973.008111] ata2.00: failed command: READ DMA EXT
[ 973.008140] ata2.00: cmd 25/00:08:78:c3:b1/00:00:6a:00:00/e0 tag 0 dma 4096 in
[ 973.008144] res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout)
[ 973.008179] ata2.00: status: { DRDY }
[ 973.008201] ata2: soft resetting link
[ 973.697072] ata2.00: configured for UDMA/133
[ 973.697090] ata2.00: device reported invalid CHS sector 0
[ 973.697116] ata2: EH complete
[ 3694.048044] ata2: lost interrupt (Status 0x50)
[ 3694.048081] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen
[ 3694.048113] ata2.00: failed command: WRITE DMA EXT
[ 3694.048142] ata2.00: cmd 35/00:20:e8:2b:a3/00:00:64:00:00/e0 tag 0 dma 16384 out
[ 3694.048146] res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout)
[ 3694.048182] ata2.00: status: { DRDY }
[ 3694.048211] ata2: soft resetting link
[ 3694.244372] ata2.00: configured for UDMA/133
[ 3694.244389] ata2.00: device reported invalid CHS sector 0
[ 3694.244415] ata2: EH complete