At Sun, 26 Jul 2009 17:07:54 -0400 Robert Heller <hel...@deepsoft.com> wrote:
> > OK, it seems that the kernel I have (stock CentOS 4.7: 2.6.9-78.0.22.EL i686) > seems to gronk the nVideo SATA controller in AHCI mode. It is NOT able > to deal with the SATA DVD Burner I have. It is a "Sony Optiarc DVD > Burner with LightScribe Black SATA Model AD-7241S-0B LightScribe > Support". Is there some special magic I need to do? Here is the > relevant bit from the boot up (SATA ports 2-6 are empty at present): > > Jul 26 16:29:27 sauron kernel: ACPI: PCI Interrupt 0000:00:09.0[A] -> GSI 20 > (level, low) -> IRQ 201 > Jul 26 16:29:27 sauron kernel: MSI INIT SUCCESS > Jul 26 16:29:27 sauron kernel: ahci 0000:00:09.0: AHCI 0001.0200 32 slots 6 > ports 3 Gbps 0x3f impl SATA mode > Jul 26 16:29:27 sauron kernel: ahci 0000:00:09.0: flags: 64bit ncq led clo > pmp pio > Jul 26 16:29:27 sauron kernel: ata1: SATA max UDMA/133 cmd 0xF8874100 ctl 0x0 > bmdma 0x0 irq 58 > Jul 26 16:29:27 sauron kernel: ata2: SATA max UDMA/133 cmd 0xF8874180 ctl 0x0 > bmdma 0x0 irq 58 > Jul 26 16:29:27 sauron kernel: ata3: SATA max UDMA/133 cmd 0xF8874200 ctl 0x0 > bmdma 0x0 irq 58 > Jul 26 16:29:27 sauron kernel: ata4: SATA max UDMA/133 cmd 0xF8874280 ctl 0x0 > bmdma 0x0 irq 58 > Jul 26 16:29:27 sauron kernel: ata5: SATA max UDMA/133 cmd 0xF8874300 ctl 0x0 > bmdma 0x0 irq 58 > Jul 26 16:29:27 sauron kernel: ata6: SATA max UDMA/133 cmd 0xF8874380 ctl 0x0 > bmdma 0x0 irq 58 > Jul 26 16:29:27 sauron kernel: scsi1 : ahci > Jul 26 16:29:27 sauron kernel: ata1: SATA link up 1.5 Gbps (SStatus 113 > SControl 300) > Jul 26 16:29:27 sauron kernel: ata1.00: qc timeout (cmd 0xec) > Jul 26 16:29:27 sauron kernel: ata1.00: failed to IDENTIFY (I/O error, > err_mask=0x104) > Jul 26 16:29:27 sauron kernel: ata1: SATA link up 1.5 Gbps (SStatus 113 > SControl 300) > Jul 26 16:29:27 sauron kernel: ata1.00: qc timeout (cmd 0xa1) > Jul 26 16:29:27 sauron kernel: ata1.00: failed to IDENTIFY (I/O error, > err_mask=0x104) > Jul 26 16:29:27 sauron kernel: ata1: SATA link up 1.5 Gbps (SStatus 113 > SControl 300) > Jul 26 16:29:27 sauron kernel: ata1.00: qc timeout (cmd 0xa1) > Jul 26 16:29:27 sauron kernel: ata1.00: failed to IDENTIFY (I/O error, > err_mask=0x104) > Jul 26 16:29:27 sauron kernel: ata1: SATA link up 1.5 Gbps (SStatus 113 > SControl 300) > Jul 26 16:29:27 sauron kernel: scsi2 : ahci > Jul 26 16:29:27 sauron kernel: ata2: SATA link down (SStatus 0 SControl 300) > Jul 26 16:29:27 sauron kernel: scsi3 : ahci > Jul 26 16:29:27 sauron kernel: ata3: SATA link down (SStatus 0 SControl 300) > Jul 26 16:29:27 sauron kernel: scsi4 : ahci > Jul 26 16:29:27 sauron kernel: ata4: SATA link down (SStatus 0 SControl 300) > Jul 26 16:29:27 sauron kernel: scsi5 : ahci > Jul 26 16:29:28 sauron kernel: ata5: SATA link down (SStatus 0 SControl 300) > Jul 26 16:29:28 sauron kernel: scsi6 : ahci > > > I just tried adding 'irqpoll' and this seems to have cured things -- the DVD Burner is detected! I'm guessing it is a case of broken firmware somewhere (which seems to be the purpose of the irqpoll parameter). -- Robert Heller -- 978-544-6933 Deepwoods Software -- Download the Model Railroad System http://www.deepsoft.com/ -- Binaries for Linux and MS-Windows hel...@deepsoft.com -- http://www.deepsoft.com/ModelRailroadSystem/ _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
