Hi, > This is NCQ protocol violation on the drive's side shown on some early > drives. No need to worry too much about it. The drive will just get > blacklisted for NCQ and should work fine. > Thx. Also, remember one of the problem I have, with ata2 going to timeout because this port of the ICH7 is connected to a PMT ? You suggested me to connect a disk to one of the SATA port of the PMT, and reboot the machine to see if the timeout would vanish... I've just done it, and here is the relevant part of the boot log : .... ACPI: PCI Interrupt 0000:00:1f.2[B] -> GSI 23 (level, low) -> IRQ 23 ahci 0000:00:1f.2: AHCI 0001.0100 32 slots 4 ports 3 Gbps 0xf impl SATA mode ahci 0000:00:1f.2: flags: 64bit ncq led clo pio slum part ata1: SATA max UDMA/133 cmd 0xffffc2000008e900 ctl 0x0000000000000000 bmdma 0x0000000000000000 irq 504 ata2: SATA max UDMA/133 cmd 0xffffc2000008e980 ctl 0x0000000000000000 bmdma 0x0000000000000000 irq 504 ata3: SATA max UDMA/133 cmd 0xffffc2000008ea00 ctl 0x0000000000000000 bmdma 0x0000000000000000 irq 504 ata4: SATA max UDMA/133 cmd 0xffffc2000008ea80 ctl 0x0000000000000000 bmdma 0x0000000000000000 irq 504 scsi0 : ahci ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300) ata1.00: ATA-7: Maxtor 6L250S0, BANC1G10, max UDMA/133 ata1.00: 490234752 sectors, multi 0: LBA48 NCQ (not used) ata1.00: configured for UDMA/133 scsi1 : ahci ata2: SATA link up 3.0 Gbps (SStatus 123 SControl 300) ata2.00: ATA-6: External Disk 0, RGL10364, max UDMA/133 ata2.00: 1 sectors, multi 1: LBA48 ata2.00: configured for UDMA/133 scsi2 : ahci ata3: SATA link up 1.5 Gbps (SStatus 113 SControl 300) ata3.00: ATA-7: Maxtor 6L250S0, BANC1G10, max UDMA/133 ata3.00: 490234752 sectors, multi 0: LBA48 NCQ (not used) ata3.00: configured for UDMA/133 scsi3 : ahci ata4: SATA link up 3.0 Gbps (SStatus 123 SControl 300) ata4.00: ATA-7: ST3500641AS, 3.AAB, max UDMA/133 ata4.00: 976773168 sectors, multi 16: LBA48 NCQ (depth 31/32) ata4.00: configured for UDMA/133 scsi 0:0:0:0: Direct-Access ATA Maxtor 6L250S0 BANC PQ: 0 ANSI: 5 SCSI device sda: 490234752 512-byte hdwr sectors (251000 MB) sda: Write Protect is off SCSI device sda: write cache: enabled, read cache: enabled, doesn't support DPO or FUA SCSI device sda: 490234752 512-byte hdwr sectors (251000 MB) sda: Write Protect is off SCSI device sda: write cache: enabled, read cache: enabled, doesn't support DPO or FUA sda: sda1 sda2 sda3 sd 0:0:0:0: Attached scsi disk sda sd 0:0:0:0: Attached scsi generic sg0 type 0 scsi 1:0:0:0: Direct-Access ATA External Disk 0 RGL1 PQ: 0 ANSI: 5 SCSI device sdb: 1 512-byte hdwr sectors (0 MB) sdb: Write Protect is off SCSI device sdb: write cache: enabled, read cache: enabled, doesn't support DPO or FUA SCSI device sdb: 1 512-byte hdwr sectors (0 MB) sdb: Write Protect is off SCSI device sdb: write cache: enabled, read cache: enabled, doesn't support DPO or FUA sdb: unknown partition table sd 1:0:0:0: Attached scsi disk sdb sd 1:0:0:0: Attached scsi generic sg1 type 0 scsi 2:0:0:0: Direct-Access ATA Maxtor 6L250S0 BANC PQ: 0 ANSI: 5 SCSI device sdc: 490234752 512-byte hdwr sectors (251000 MB) sdc: Write Protect is off SCSI device sdc: write cache: enabled, read cache: enabled, doesn't support DPO or FUA SCSI device sdc: 490234752 512-byte hdwr sectors (251000 MB) sdc: Write Protect is off SCSI device sdc: write cache: enabled, read cache: enabled, doesn't support DPO or FUA sdc: sdc1 sdc2 sd 2:0:0:0: Attached scsi disk sdc sd 2:0:0:0: Attached scsi generic sg2 type 0 scsi 3:0:0:0: Direct-Access ATA ST3500641AS 3.AA PQ: 0 ANSI: 5 SCSI device sdd: 976773168 512-byte hdwr sectors (500108 MB) sdd: Write Protect is off SCSI device sdd: write cache: enabled, read cache: enabled, doesn't support DPO or FUA SCSI device sdd: 976773168 512-byte hdwr sectors (500108 MB) sdd: Write Protect is off SCSI device sdd: write cache: enabled, read cache: enabled, doesn't support DPO or FUA sdd: sdd1 sdd2 sdd3 sd 3:0:0:0: Attached scsi disk sdd sd 3:0:0:0: Attached scsi generic sg3 type 0 ACPI: PCI Interrupt 0000:02:00.0[A] -> GSI 17 (level, low) -> IRQ 17 ahci 0000:02:00.0: AHCI 0001.0000 32 slots 2 ports 3 Gbps 0x3 impl SATA mode ahci 0000:02:00.0: flags: 64bit ncq pm led clo pmp pio slum part ... The good news is that there is no more timeout, which is excellent ! The bad news is that the disk is not detected... but maybe I should do something in the BIOS configuration. I'll try to have a look at this, because connecting a disk to avoid TO without being able to use it is not that good ;) Regards, Paul - To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html