Re: keyboard stopped working after de9ce703c6b807b1dfef5942df4f2fadd0fdb67a

[Vojtech Pavlik]

On Tue, Jul 17, 2007 at 03:52:07PM -0400, Dmitry Torokhov wrote:
> Hi Christoph,
> 
> On 7/17/07, Christoph Pfister <christophpfister@xxxxxxxxx> wrote:
> >
> >Yep, attached (cold reboot, not pressing any keys, 2.6.21).
> >
> 
> Ok, I see. You don't use PS/2 mouse and so BIOS told us that mouse is
> absent and reassigned IRQ12 to EHCI controller. However we do not
> listen to BIOS on i386 (for historucal reasons) and process with
> registering AUX port... Now IRQ12 is shared between AUX port and EHCI
> and the keyboard controller is unhappy wehereas before (with polling
> timer) it would release IRQ12 and close port...

Here I should add that IRQ sharing between ISA/LPC where i8042 lives and
PCI where EHCI lives doesn't work - only one of the sides will ever be
able to trigger interrupts, depending on the bridge config.

> Does your keyboard start working if you boot with i8042.noaux?

-- 
Vojtech Pavlik
Director SuSE Labs
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