Re: Bug#598518: linux-image-2.6-686: ata_piix module loaded before ahci module deactivate hotplug support (regression from lenny)

[Ben Hutchings <ben@decadent.org.uk>]

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On Wed, 2010-09-29 at 18:50 +0200, thomas.debesse+debian@gmail.com
wrote:
[...]
> ICH6 sata controller could be managed by both ata_piix and ahci module but only
> ahci module handle hotplug.
> At boot time, when ata_piix is loaded before ahci module, it takes control of
> the ICH6 controller and the ahci module does'nt manage nothing. Because
> ata_piix also manage ICH6 sata controller, hard drives are managed, but because
> ata_piix module is used in place of ahci module, because ahci module is'nt
> used, hotplug (and other ahci functionnalities indeed) does'nt works.
[...]
> The solution is to load ahci module before ata_piix module, then we can have
> SATA drives managed by ahci module and IDE drives managed by ata_piix module.
[...]

You can force ahci to be loaded first:
1. Add the line 'ahci' to /etc/initramfs-tools/modules.
2. Run 'update-initramfs -u' to regenerate the initramfs.
3. Reboot.

But it seems like it would be better if ahci was automatically
preferred.

Ben.

-- 
Ben Hutchings
Once a job is fouled up, anything done to improve it makes it worse.

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