This might be related to
https://bugzilla.kernel.org/show_bug.cgi?id=63661
That issue was bisected to 3c076351c402 ("PCI: Rework ASPM disable
code"), which appeared upstream in v3.3-rc1. That commit was backported
to Ubuntu-3.2.0-22.35: http://kernel.ubuntu.com/git/ubuntu/ubuntu-
precise.git/commit/?id=2dcce0a318fc. I'm told that 3c076351c402 has
*not* been backported to RHEL6.3, and I expect the same is true for
CentOS6.3, which might explain why the problem doesn't occur on
CentOS6.3.
For this Ubuntu issue, "pci=conf1" is a workaround, but for 63661,
"pci=conf1" didn't help (http://www.spinics.net/lists/linux-
scsi/msg76194.html), so it may be that this issue on Ubuntu is
different.
But 63661 is the same hardware (Intel S2600 motherboard, MegaRAID SAS
2208), so it seems likely these issues are the same. One reporter there
found that turning off "Fast Boot" in the BIOS settings is a workaround.
My theory is that megaraid_sas depends on something done by the option
ROM, and that enabling "Fast Boot" in the BIOS (which is apparently the
default) causes the BIOS to skip executing the option ROM. Further, I
speculate that prior to 3c076351c402 ("PCI: Rework ASPM disable code"),
the Linux PCI core did something that made things work.
If anybody still cares about this issue, please look at
https://bugzilla.kernel.org/show_bug.cgi?id=63661 and we can try to
debug it further.
** Bug watch added: Linux Kernel Bug Tracker #63661
http://bugzilla.kernel.org/show_bug.cgi?id=63661
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https://bugs.launchpad.net/bugs/1091465
Title:
debian-installer fails to detect lsi 2208-based raid card in precise,
quantal, raring
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