Date: Tue, 1 Jul 2003 21:45:15 +0200
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: 2.4.21 IDE problems (lost interrupt, bad DMA status)
Message-ID: <20030701194515.GA1336@alf.amelek.gda.pl>
References: <20030630221542.GA17416@alf.amelek.gda.pl> <1057011399.17567.50.camel@dhcp22.swansea.linux.org.uk>
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From: Marek Michalkiewicz <marekm@amelek.gda.pl>
Sender: linux-kernel-owner@vger.kernel.org
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On Mon, Jun 30, 2003 at 11:16:40PM +0100, Alan Cox wrote:
> On Llu, 2003-06-30 at 23:15, Marek Michalkiewicz wrote:
> > 
> > hda: dma_timer_expiry: dma status == 0x24
> > hda: lost interrupt
> > hda: dma_intr: bad DMA status (dma_stat=30)
> > hda: dma_intr: status=0x50 { DriveReady SeekComplete }
> 
> Does it happen if you disable local apic support ?

It seems that booting with "noapic" fixes it, or at least now it
is much more difficult to trigger.  Still testing...

Before upgrading to 2.4.21, I've been running 2.4.20 with APIC
enabled for a few months, and there were no such IDE errors.

BTW, "noapic" fixes the "power button not working if ACPI is alone
on its own IRQ" problem (present in both 2.4.20 and 2.4.21) too.

Thanks,
Marek

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