Hello,
I'm using a HP DV5 1073ez and I have exactly the same the same problem.
ata1: irq_stat 0x00000040, connection status changed
ata1: SError: {DevExch}
ata2: exception Emask 0x10 SAct 0x0 SErr 0x40000000 action 0xe frozen.
And i also think that it is better to correct the bug in the kernel
rather than asking hp to update the BIOS.
You can look to my lspci in this post http://forum.ubuntu-
fr.org/viewtopic.php?id=265413 (French)
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HP Pavilion dv5: ATA exception on resume from suspend
https://bugs.launchpad.net/bugs/301353
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