[Bug 301353] Re: HP Pavilion dv5: ATA exception on resume from suspend

[Weeble]

I have the same problem on a Philips "freevents" 15NB8611 laptop from PC
World. (As I understand it Philips don't build these themselves, and it
may really be something else rebranded. It's got a Core 2 Duo P7350, 4GB
of RAM and some sort of NVIDIA graphics card.) Should I create a
separate bug? It appears very similar. I don't know how to catch the
start of the stream of errors, but I can confirm that on attempting to
resume from suspend I got a text screen with these constantly repeating
messages:

ata1: irq_stat 0x00000040, connection status changed
ata1: SError: {DevExch}
ata2: exception Emask 0x10 SAct 0x0 SErr 0x4000000 action 0xe frozen

I was able to work around the problem by changing the HDC (I *think*
that's what it was called) setting in the BIOS from AHCI to IDE. After
doing so I have had no problem resuming from suspend. I'm attaching the
output from lspci -vvnn and dmesg for both BIOS settings. The files
"bad_dmesg.txt" and "bad_lspci.txt" are from when the BIOS was set to
AHCI, and in this configuration I experience the aforementioned
exceptions attempting to resume from suspend. The files "good_dmesg.txt"
and "good_lspci.txt" are from when the BIOS was set to IDE, which
appears to cause no problems.

I hope this is useful information. I'd like to help get to the bottom of
this, but I don't have much Linux experience so I apologise if I'm doing
things wrong. If this is a separate bug, how should I go about reporting
it?

** Attachment added: "lspci_and_dmesg.tar.gz"
   http://launchpadlibrarian.net/20846518/lspci_and_dmesg.tar.gz

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HP Pavilion dv5: ATA exception on resume from suspend
https://bugs.launchpad.net/bugs/301353
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