Re: mouse&keyboard with 2.6.10+

From: Vojtech Pavlik
Date: Mon Mar 14 2005 - 11:46:04 EST

On Mon, Mar 14, 2005 at 07:38:21PM +0300, Michael Tokarev wrote:

> >>>Can you try 'usb-handoff' on the kernel command line?
> >>
> >>The problem has nothing to do with USB per se, as far as I can see.
> >>PS2 keyboard and mouse does not work when the USB subsystem (incl.
> >>usbcore) is not loaded. And the problem is with PS2 keyboard/mouse,
> >>not with USB one which works just fine.
> >
> >Of course. Nevertheless 'usb-handoff' tells the BIOS not to meddle
> >with the PS/2 interfaces, too.
> Oh me bad, I should listen to whatever is being said, instead of doing
> my stupid guesses... Just rebooted into with usb-handoff and
> both the keyboard and mouse are Just Works, and psmouse driver loads
> almost immediately too.
> Also, it works just fine after turning off USB Keyboard and Mouse
> support in BIOS and without usb-handoff kernel parameter.
> In 2.6.9 (it works just fine too, problem happens with 2.6.10 and up
> only), there's no such parameter in drivers/pci/quirks.c. Hmm.

Any chance the order of module loading changed between the two versions?
I see you have 'psmouse' as a module. If i8042 (and psmouse) are loaded
after uhci-hcd (or ohci-hcd), the problem will disappear, too.

> So is this a bios/mobo problem,


> or can it be solved in kernel somehow?

We could have usb-handoff by default.

Vojtech Pavlik
SuSE Labs, SuSE CR
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