[Bug 53754] Re: ata_piix problem with Intel ICH7 chipset

[José M. López-Cepero]

Using 2.6.20-9-generic SMP on Feisty.

Without a CD in the drive, there are hangs and the dmesg messages are
almost exactly the same chantra has reported:

[ 9575.732000] ata1.01: cmd a0/01:00:00:00:00/00:00:00:00:00/b0 tag 0 cdb 0x25 data 8 in
[ 9575.732000]          res 50/00:00:00:00:00/00:00:00:00:00/b0 Emask 0x2 (HSM violation)
[ 9575.732000] ata1: soft resetting port
[ 9576.084000] ata1.00: configured for UDMA/100
[ 9576.264000] ata1.01: configured for UDMA/33
[ 9576.264000] ata1: EH complete
[ 9576.280000] SCSI device sda: 234441648 512-byte hdwr sectors (120034 MB)
[ 9576.296000] sda: Write Protect is off
[ 9576.296000] sda: Mode Sense: 00 3a 00 00
[ 9576.304000] SCSI device sda: write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 9576.336000] SCSI device sda: 234441648 512-byte hdwr sectors (120034 MB)
[ 9576.340000] sda: Write Protect is off
[ 9576.340000] sda: Mode Sense: 00 3a 00 00
[ 9576.340000] SCSI device sda: write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[10195.476000] ipw3945: association process canceled
[10531.292000] ata1.01: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2 frozen
[10531.292000] ata1.01: cmd a0/01:00:00:00:00/00:00:00:00:00/b0 tag 0 cdb 0x43 data 12 in
[10531.292000]          res 40/00:03:00:00:00/00:00:00:00:00/b0 Emask 0x4 (timeout)
[10538.292000] ata1: port is slow to respond, please be patient (Status 0xd0)
[10561.308000] ata1: port failed to respond (30 secs, Status 0xd0)
[10561.308000] ata1: soft resetting port
[10561.660000] ata1.00: configured for UDMA/100
[10561.848000] ata1.01: configured for UDMA/33
[10561.848000] ata1: EH complete
[10561.864000] SCSI device sda: 234441648 512-byte hdwr sectors (120034 MB)
[10561.872000] sda: Write Protect is off
[10561.872000] sda: Mode Sense: 00 3a 00 00
[10561.888000] SCSI device sda: write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[10561.912000] SCSI device sda: 234441648 512-byte hdwr sectors (120034 MB)
[10561.912000] sda: Write Protect is off
[10561.912000] sda: Mode Sense: 00 3a 00 00
[10562.288000] SCSI device sda: write cache: enabled, read cache: enabled, doesn't support DPO or FUA

I had a few more errors of the "timeout" kind after this one, and they
all corresponded to hangs. They seemed to happen very frequently, like
every 20 minutes or less. I did not get any other "HSM violation"
errors.

The good part: With a CD in the drive, the computer works perfectly. No
hangs, no dmesg messages, all good and well.

-- 
ata_piix problem with Intel ICH7 chipset
https://launchpad.net/bugs/53754