Comment 53 for bug 57502

sargosis, that's not completely true:

C2D is capable of doing 64bits but unlike Itanium it also supports 32bit, Core 2 Duo is an "extended" Core Duo with EM64T + pni + SSE4

ideally the 32bit or 64bit versions should do equally fine on these systems ...

btw:
Ben Collins, keep up the good work!

I've tried a ton of new kernels with this controller JMicron PATA (I have 2 ide-harddrives connected to it) on my Asus P5W DH

so far the only working kernels for me were:
2.6.18-rc4-mm1
2.6.18-rc4-mm2
2.6.17-emission8 works for me, too http://forums.gentoo.org/viewtopic-p-3555200.html#3555200
=> thank to this patch: http://distfiles.evolution-mission.org/sources/2.6.17/emission8/broken-out/031-jmicron-ide-2.6.17.patch
the controller also works with 2.6.17

all kernels below them don't work for me
the same applies for the newer kernels (don't "really" work): the kernels takes approx. 9 minutes to bring the controller / hdds up or just gives a message:
qc timeout (cmd 0xec)
failed to IDENTIFY
(I/O) error, err_mask = 0x4)

(2.6.18-rc6-mm1 / 2.6.18-rc6), this unfortunately also depends on Bios settings

I both tried libata (only libata) and ide but both show the same behavior ...

<== I hope this helps you a little & that you can find out the changes (& bad code ;-) ) which were made between those kernels to get a patched & working kernel

if you have a system with that chipset you can try it out:
http://forums.gentoo.org/viewtopic-p-3548439.html#3548439
a livecd which is based on 2.6.18-rc4-mm1