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a60fb26
(Get the code!)
Here's something I think could be relevant. This text follows the text posted 2 posts above which is from kern.log. It concerns IRQ 19 so I think it could be relevant:
[ 3.152025] ata1: SATA link down (SStatus 0 SControl 300)
[ 3.488024] ata2: SATA link down (SStatus 0 SControl 300)
[ 3.504041] ohci1394 0000:04:02.0: PCI INT A -> GSI 21 (level, low) -> IRQ 21
[ 3.553749] ohci1394: fw-host0: OHCI-1394 1.1 (PCI): IRQ=[21] MMIO=[fdbfd000-
[ 3.553859] pata_acpi 0000:00:1f.2: PCI INT A -> GSI 19 (level, low) -> IRQ 19
[ 3.553891] pata_acpi 0000:00:1f.2: setting latency timer to 64
[ 3.553907] pata_acpi 0000:00:1f.2: PCI INT A disabled
[ 3.553921] pata_acpi 0000:00:1f.5: PCI INT A -> GSI 19 (level, low) -> IRQ 19
[ 3.553934] pata_acpi 0000:00:1f.5: setting latency timer to 64
[ 3.553941] pata_acpi 0000:00:1f.5: PCI INT A disabled
[ 3.553955] pata_acpi 0000:03:00.1: enabling device (0000 -> 0001)
[ 3.553961] pata_acpi 0000:03:00.1: PCI INT B -> GSI 17 (level, low) -> IRQ 17
[ 3.553980] pata_acpi 0000:03:00.1: setting latency timer to 64
[ 3.553989] pata_acpi 0000:03:00.1: PCI INT B disabled
[ 3.556428] ata_piix 0000:00:1f.2: version 2.12
[ 3.556434] ata_piix 0000:00:1f.2: PCI INT A -> GSI 19 (level, low) -> IRQ 19
[ 3.556437] ata_piix 0000:00:1f.2: MAP [ P0 P2 P1 P3 ]
[ 3.556476] ata_piix 0000:00:1f.2: setting latency timer to 64
[ 3.557084] scsi2 : ata_piix
[ 3.557129] scsi3 : ata_piix
[ 3.557620] ata3: SATA max UDMA/133 cmd 0xf900 ctl 0xf800 bmdma 0xf500 irq 19
[ 3.557625] ata4: SATA max UDMA/133 cmd 0xf700 ctl 0xf600 bmdma 0xf508 irq 19
[ 4.032064] ata3: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
[ 4.050961] ata3.00: ATA-8: WDC WD10EACS-00D6B0, 01.01A01, max UDMA/133
[ 4.050965] ata3.00: 1953525168 sectors, multi 16: LBA48 NCQ (depth 0/32)
[ 4.057006] ata3.00: configured for UDMA/133
[ 4.386552] ata4: SATA link down (SStatus 0 SControl 300)
[ 4.386682] scsi 2:0:0:0: Direct-Access ATA WDC WD10EACS-00D 01.0 PQ: 0 ANSI: 5
[ 4.386774] ata_piix 0000:00:1f.5: PCI INT A -> GSI 19 (level, low) -> IRQ 19
[ 4.386777] ata_piix 0000:00:1f.5: MAP [ P0 -- P1 -- ]
[ 4.386804] ata_piix 0000:00:1f.5: setting latency timer to 64
[ 4.386848] scsi4 : ata_piix
[ 4.386901] scsi5 : ata_piix
[ 4.387116] ata5: SATA max UDMA/133 cmd 0xf200 ctl 0xf100 bmdma 0xee00 irq 19
[ 4.387119] ata6: SATA max UDMA/133 cmd 0xf000 ctl 0xef00 bmdma 0xee08 irq 19