Comment 10 for bug 737388

the major messages form dmesg.log

[ 1.739662] ata_piix 0000:00:1f.2: version 2.13
[ 1.739692] ata_piix 0000:00:1f.2: PCI INT B -> GSI 19 (level, low) -> IRQ 19
[ 1.739813] ata_piix 0000:00:1f.2: MAP [ P0 P2 P1 P3 ]
[ 1.894822] ata_piix 0000:00:1f.2: setting latency timer to 64
[ 1.894900] scsi0 : ata_piix
[ 1.895093] scsi1 : ata_piix
[ 1.896558] ata1: SATA max UDMA/133 cmd 0x3098 ctl 0x30ac bmdma 0x3070 irq 19
[ 1.896679] ata2: SATA max UDMA/133 cmd 0x3090 ctl 0x30a8 bmdma 0x3078 irq 19
[ 1.896836] ata_piix 0000:00:1f.5: PCI INT A -> GSI 21 (level, low) -> IRQ 21
[ 1.896968] ata_piix 0000:00:1f.5: MAP [ P0 -- P1 -- ]
[ 2.050371] ata_piix 0000:00:1f.5: setting latency timer to 64
[ 2.050450] scsi2 : ata_piix
[ 2.050619] scsi3 : ata_piix
[ 2.051460] ata3: SATA max UDMA/133 cmd 0x3088 ctl 0x30a4 bmdma 0x3050 irq 21
[ 2.051579] ata4: SATA max UDMA/133 cmd 0x3080 ctl 0x30a0 bmdma 0x3058 irq 21
[ 2.411524] ata3: SATA link down (SStatus 0 SControl 300)
[ 2.959887] ata2.00: failed to resume link (SControl 0)
[ 3.119805] ata4: failed to resume link (SControl 0)
[ 3.131304] ata4: SATA link down (SStatus 4 SControl 0)
[ 3.299715] ata1.01: failed to resume link (SControl 0)
[ 3.321094] ata2.00: SATA link down (SStatus 4 SControl 0)
[ 3.321227] ata2.01: SATA link down (SStatus 0 SControl 300)
[ 3.459693] ata1.00: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
[ 3.459834] ata1.01: SATA link down (SStatus 4 SControl 0)
[ 3.459971] ata1.01: link offline, clearing class 3 to NONE
[ 3.479771] ata1.00: ATAPI: HL-DT-ST DVDRAM GH22NS40, NL02, max UDMA/100
[ 3.519751] ata1.00: configured for UDMA/100
[ 8.517024] ata1.00: qc timeout (cmd 0xa0)
[ 8.517125] ata1.00: TEST_UNIT_READY failed (err_mask=0x4)
[ 9.936295] ata1.01: failed to resume link (SControl 0)
[ 10.096289] ata1.00: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
[ 10.096410] ata1.01: SATA link down (SStatus 4 SControl 0)
[ 10.096524] ata1.01: link offline, clearing class 3 to NONE
[ 10.127758] ata1.00: failed to IDENTIFY (I/O error, err_mask=0x2)
[ 10.127866] ata1.00: revalidation failed (errno=-5)
[ 10.127970] ata1.00: limiting SATA link speed to 1.5 Gbps
[ 16.512919] ata1.01: failed to resume link (SControl 0)
[ 16.672899] ata1.00: SATA link up 1.5 Gbps (SStatus 113 SControl 310)
[ 16.673020] ata1.01: SATA link down (SStatus 4 SControl 0)
[ 16.674733] ata1.01: link offline, clearing class 3 to NONE
[ 16.732949] ata1.00: configured for UDMA/100
[ 21.730244] ata1.00: qc timeout (cmd 0xa0)
[ 21.730353] ata1.00: TEST_UNIT_READY failed (err_mask=0x4)
[ 21.730457] ata1.00: disabled
[ 21.730567] ata1.00: hard resetting link
[ 22.080061] ata1.01: hard resetting link
[ 23.149510] ata1.01: failed to resume link (SControl 0)
[ 23.309488] ata1.00: SATA link up 1.5 Gbps (SStatus 113 SControl 310)
[ 23.309608] ata1.01: SATA link down (SStatus 4 SControl 0)
[ 23.309722] ata1.01: link offline, clearing class 3 to NONE
[ 23.309725] ata1: EH complete
[ 23.310136] Write protecting the kernel read-only data: 10240k