thanks
Frans Pop wrote on 06/04/2005 00:42:
[...]the ata_piix kernel module blocks the PATA part of the chipset but doesn't support the PATA devices.
Some additional info on this issue. There is a lot of info in the Ubuntu bug report referenced in this discussion on #d-boot.
<Kamion> oh, we turned on LIBATA_ENABLE_ATAPI in the kernel as well
<Kamion> the submitter mentioned LIBATA_ENABLE_PATA, which is different; and defining that breaks stuff
[...]
I was unable to find any breakage from defining LIBATA_ENABLE_PATA, but I can confirm that it didn't help either.
<fjp> Ah. <Kamion> because on some chipsets both piix and ata_piix get the same PCI id in the hotplug pcimap <Kamion> and they both try to claim the disk, which goes totally haywire: you get silent data corruption reading from CD-ROM
If that is true, all I can say is: YIKES!
However, I tried loading the piix driver on the system in question but it didn't find any channels to support, even before loading ide_generic or ata_piix.
<Kamion> LIBATA_ENABLE_ATAPI seemed sufficient <Kamion> if the ide_generic workaround works, that would probably be a lot easier for Debian; it would "only" be some hairy hw-detect code <fjp> Kamion: Works for installation, but will probably still cause problems after reboot because the SATA driver will be loaded by the initrd before the generic driver. <Kamion> right
Exactly. To use the workaroung also after reboot, I had to manually modify the load-modules (or whatever it is called) script in the initrd. However, since I don't have a problem accessing the harddisc at that time, it's less of an issue for me (I use netinst-Images anyway).
cu, sven
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