Comment 4 for bug 185862

OK, I compiled successfully a kernel from the hardy package, with the missing:
CONFIG_BLK_DEV_IDE_PMAC=y
CONFIG_BLK_DEV_IDE_PMAC_ATA100FIRST=y
CONFIG_BLK_DEV_IDEDMA_PMAC=y
and so far it seems to work well, haven't noticed other problems too, but haven't tested extensively.
Somebody tried that already and reported it doesn't help - I understand you just added the lines to .config - that usually shouldn't be done manually but through a config frontend (menuconfig...). The thing is that these three configs depend on CONFIG_BLK_DEV_IDE=y - it must be compiled in kernel and not as module - as it is currently in ubuntu - That's why the PMAC options don't exist. Why this is so I have no idea - but once it's compiled in and PMAC can be selected it works OK.
Would be good now to advance the fix of this problem - and if more people can get the grip on a manually compiled kernel in the meanwhile we can test it to see there are no other regressions :)