Date: Fri, 20 Sep 2002 11:42:49 +0100 From: Pete French <pfrench@firstcallgroup.co.uk> To: freebsd-stable@freebsd.org, saper@system.pl Subject: Re: pcm sound -> PCI IRQ problems on Sony VAIO? Message-ID: <E17sLFJ-0003B4-00@mailhost.firstcallgroup.co.uk> In-Reply-To: <20020919232800.GA82881@barbera.system.pl>
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> 1) Is FreeBSD in UP mode really sharing IRQs? (can't boot MP kernel on > this notebook) > > 2) Why when NO driver is attached to the irq 5 the system works > properly? Now this we have seen before - you will find references to this iin the archives in various guises. people coomplaining about lockups with an fxp controller, myself complaining about lockups with a sym0 SCSI controller. But what they all had in common was sharing iinterrupts - and the fix (at least in my case) was to remove the driver sharing the interrupt. Note that it was definietly a *driver* problem - I had an IRQ shared with a device that was not generating any interrupts. But the device driver (in my case ata) needed removing from the kernel to fix the problem. There seem to be some obscure (and rather rare I hope) problems with sharing IRQ's - the best advice is to configure the system so none ofthem are shared if possible,and then remove and devices that you dont need from the kernel. -pcf. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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