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Message-ID: <20070728205514.GA17084@suse.cz> Date: Sat, 28 Jul 2007 22:55:14 +0200 From: Vojtech Pavlik <vojtech@...e.cz> To: Dmitry Torokhov <dmitry.torokhov@...il.com> Cc: Christoph Pfister <christophpfister@...il.com>, linux-kernel@...r.kernel.org Subject: Re: keyboard stopped working after de9ce703c6b807b1dfef5942df4f2fadd0fdb67a On Tue, Jul 17, 2007 at 03:52:07PM -0400, Dmitry Torokhov wrote: > Hi Christoph, > > On 7/17/07, Christoph Pfister <christophpfister@...il.com> 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 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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