[Bug 591532] [NEW] ata errors { DRDY ERR } { ABRT } in Lucid

[Montblanc]

Public bug reported:

I finally decided to do a Kubuntu 10.04 LTS fresh install, so I started
it from LiveCD (no errors found) with normal kernel parameters.
Everything is fine, KDE starts up and I can mount my disks. But before
installing, I wanted to check dmesg just to be sure and there I found
some errors like these:

ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
ata1.00: irq_stat 0x08000000
ata1.00: failed command: READ DMA EXT
ata1.00: cmd 25/00:08:01:66:f4/00:00:1b:00:00/e0 tag 0 dma 4096 in
ata1.00: status: { DRDY ERR }
ata1.00: error: { ABRT }
ata1.00: configured for UDMA/100
ata1: EH complete

which did NOT show up in my Karmic system (using kernel 2.6.31-22
-generic-pae as I'm typing). I'm also affected by bug #228302 from
Feisty (which, since Intrepid, I'm used to work around with the
"pata_ali.atapi_dma=1" solution), so I thought this was some kind of
libata regression. I googled around a bit and tried starting up my
LiveCD with many parameters such as "noapic acpi=off
pata_ali.atapi_dma=1" but I still get the errors, no matter what. As far
as I used the LiveCD session, I noticed nothing unusual, but I'm too
scared that after the installation my system could freeze due to
interrupt losses, leading to data loss, so I'm still on Karmic right now
and sincerely wish to know what's behind these errors, before knowing if
there's any fix.

I'm attaching my dmesg output from my Karmic installation, as well as
the concerning Lucid ones.

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New

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ata errors { DRDY ERR } { ABRT } in Lucid
https://bugs.launchpad.net/bugs/591532
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