Laurent Pinchart wrote:
> Thanks for your advices. I enabled CONFIG_USB_DEBUG, but the log messages 
> were 
> helpless. After further unsuccessful investigation, I found out that Debian 
> loads the ehci_hcd and ohci_hcd modules in PCI bus order, which is ohci 
> followed by ehci, while I was loading ehci_hcd first in Gentoo. Reversing the 
> load order fixed the problem.

At work, we have 2 Dell precision 380 workstations.  I have an installer
that uses linux to install images.  I won't go any further on that except to
say that if [uo]hci was loaded before ehci, the keyboard refused to work
(both USB keybaords and PS2 keyboards)

> It seems like broken hardware behaviour to me. The laptop behaves very 
> stangely : when ACPI is enabled, the internal ps/2 keyboard is dead until 
> ohci_hcd is loaded (the module can be unloaded after, the keyboard stays 
> alive). For reference, I'm talking about an Acer Aspire 1674.

Personally, I've not cared for Acer computers.

-- 
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