Re: Failure with SATA DVD-RW

From: Jeff Garzik
Date: Thu Dec 06 2007 - 21:13:10 EST


Tom Lanyon wrote:
Hi list,

Just built a new machine with a Pioneer SATA DVD drive and linux
distro install CDs are not recognising it. The drive is connected to
the ICH9R southbridge of an Intel P35 chipset motherboard.

I can boot from the CD/DVD so the drive itself is working, but the
kernel reports the following:

scsi4: ahci
ata5: SATA link up at 1.5 Gbps (SStatus 113 SControl 300)
ata5.00: ATAPI, max UDMA/66
ata5.00: qc timeout (cmd 0xef)
ata5.00: failed to set xfermode (err_mask=0x104)
ata5.00: limiting speed to UDMA/44
ata5: failed to recover some devices, retrying in 5 secs
ata5: port is slow to respond, please be patient (Status 0x80)
ata5: port failed to respond (30 secs, status 0x80)
ata5: COMRESET failed (device not ready)
ata5: hardreset failed, retrying in 5 secs
ata5: SATA link up at 1.5 Gbps (SStatus 113 SControl 300)
ata5.00: ATAPI, max UDMA/66
ata5.00: qc timeout (cmd 0xef)
ata5.00: failed to set xfermode (err_mask=0x104)
ata5.00: limiting speed to PIO0
ata5: failed to recover some devices, retrying in 5 secs
ata5: port is slow to respond, please be patient (Status 0x80)
ata5: port failed to respond (30 secs, status 0x80)
ata5: COMRESET failed (device not ready)
ata5: hardreset failed, retrying in 5 secs
ata5.00: ATAPI, max UDMA/66
ata5.00: qc timeout (cmd 0xef)
ata5.00: failed to set xfermode (err_mask=0x104)
ata5.00: disabled

This is 2.6.19 (probably with a few distribution patches) on an
install CD. I also tried setting the SATA controller to a 'compatible
IDE' mode and the hard drives and DVD drive are detected and work
properly.

Any ideas what to try to get it working under AHCI?

How does a remotely recent kernel behave? :)

There have been a metric ton^2 of fixes in this specific area, in the 12 months since 2.6.19 came out.

Jeff


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