On 8/15/2013 9:47 PM, Bruce Link wrote:
On 8/15/2013 12:36 AM, Robert Hancock wrote:
On Wed, Aug 14, 2013 at 4:17 PM, Bruce Link <Bruce@xxxxxxx> wrote:
These NVIDIA SATA controllers are a pain as they all seem to have a
different set of bugs related to hardreset, etc. What happens if
you boot up
without the drive connected and then plug in the cable after the
system
boots up?
Roughly the same error is returned. See below for the dmesg output.
root@teevee:/sys/devices/pci0000:00/0000:00:06.0/ata1/host0/scsi_host/host0#
echo "- - -" > /sys/class/scsi_host/host4/scan
root@teevee:/sys/devices/pci0000:00/0000:00:06.0/ata1/host0/scsi_host/host0#
dmesg|grep ata5
[ 1.030224] ata5: SATA max UDMA/133 cmd 0x9e0 ctl 0xbe0 bmdma
0xc400 irq
20
[ 1.354216] ata5: SATA link down (SStatus 0 SControl 300)
[ 944.773288] ata5: exception Emask 0x10 SAct 0x0 SErr 0x50000
action 0xf
[ 944.773304] ata5: SError: { PHYRdyChg CommWake }
[ 944.773322] ata5: hard resetting link
[ 945.652070] ata5: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
[ 945.660176] ata5.00: ATAPI: ATAPI iHOS104, WL0F, max UDMA/100
[ 945.676165] ata5.00: configured for UDMA/100
[ 950.676049] ata5.00: qc timeout (cmd 0xa0)
[ 950.676056] ata5.00: TEST_UNIT_READY failed (err_mask=0x5)
[ 950.676064] ata5: hard resetting link
[ 950.676066] ata5: nv: skipping hardreset on occupied port
[ 951.144073] ata5: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
[ 951.168168] ata5.00: configured for UDMA/100
[ 956.168049] ata5.00: qc timeout (cmd 0xa0)
[ 956.168057] ata5.00: TEST_UNIT_READY failed (err_mask=0x4)
[ 956.168061] ata5: limiting SATA link speed to 1.5 Gbps
[ 956.168064] ata5.00: limiting speed to UDMA/100:PIO3
[ 956.168070] ata5: hard resetting link
[ 956.168072] ata5: nv: skipping hardreset on occupied port
[ 956.636056] ata5: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
[ 956.660169] ata5.00: configured for UDMA/100
[ 961.660036] ata5.00: qc timeout (cmd 0xa0)
[ 961.660044] ata5.00: TEST_UNIT_READY failed (err_mask=0x4)
[ 961.660046] ata5.00: disabled
[ 961.660061] ata5: hard resetting link
[ 962.544045] ata5: SATA link up 1.5 Gbps (SStatus 113 SControl 310)
[ 962.544061] ata5: EH complete
root@teevee:/sys/devices/pci0000:00/0000:00:06.0/ata1/host0/scsi_host/host0#
Hmm, it did a hard reset on the hotplug with seemingly the same
effect. Can we narrow down the problem any more: does this drive work
on this machine under any Linux version, or in Windows? Can you try it
in another Linux machine with a different controller to see if it
works there?
Well, this is embarrassing.
I've always assumed the problem was with the with the motherboard, as
the DVD will always successfully boot a windows installer, so I
assumed everything with the drive was OK. On further inspection, it
appears that the drive falls down when being accessed from the WinPE
environment, much the same as in linux. I've tested this on another PC
and the result looks to be the same. I'm going to do some more
testing, and will send another email if I find out otherwise. But I
think we can consider this closed.
Sorry to be a bother.
Bruce
I hooked up the DVD drive to a USB-SATA adapter to a PC and the DVD
drive works great (under both windows and linux). I was able to copy a
large number of files with no performance issues.
The PC that I did the second test on turns out to have a nVidia MCP51
chipset (It's a gateway GT4016 with a KTBC51G-LF motherboard). I should
have checked this beforehand.
So this problem looks to persist across different nVidia chipsets.
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