IRQ Conflict
Curtis George
rhlinux123 at hotmail.com
Mon Jan 5 02:39:05 UTC 2009
Thanks for the info, I have discovered some interesting things recently. I went ahead and reverted to Fedora 9 since I knew that one worked for me and found that the IRQ is being shared by the same 3 devices. I then updated the kernel on Fedora 9 to 2.6.27 (which is also what Fedora 10 starts out with) and got the same IRQ disabled messages and sure enough my computer locked up within a few minutes of booting that kernel. Luckily I still had the 2.6.25 kernel installed, so I booted into that one instead.
Does this mean there is a possible problem with the 2.6.27 kernel? What is the actual cause of this problem?
If you do a google search on Linux IRQ Disabled you will find that this problem has existed in various forms without identifying the actual cause. I should mention that I cannot move around my devices (they are either builtin or using the only compatible slot). I also do not have a disable PnP OS option in BIOS. I also saw a suggestion to change the SATA mode to AHCI in BIOS instead of IDE, but I don't have that option either (for me only RAID or non-RAID). This worked from some, but I think in their case the ata device was involved in the interrupt that was being disabled.
- Curtis George
> Date: Sun, 4 Jan 2009 21:03:14 +0900
> From: debian at herakles.homelinux.org
> To: fedora-test-list at redhat.com
> Subject: Re: IRQ Conflict
>
> Mick M. wrote:
> >
>
> >>
> >> I'm guessing that when I installed Fedora 9 with all
> >> the USB unplugged that is chose differet IRQs so there was
> >> no confilict (I'm not sure though). I can't
> >> manually set the IRQ on any of these devices, it seems to be
> >> up to the OS to choose. Any ideas on what is causing this
> >> or how to fix it?
> >>
> >> - Curtis George
> >>
> >
> > Hi;
> > try moving cards around to different slots.
> > Some motherboards assign irq's to specific slots.
> > Then some cards only work with certain irq's.
> >
> > On bootup you may see what irq goes where.
> > You may be able to play in the BIOS to help out.
>
> PCI interrupts are supposed to be sharable. There are four interrupts,
> INT#A through INT#D which can be mapped to ISA interrupts any way the
> BIOS or OS likes.
>
> If the PCI interrupts on your system are not sharable, then the system's
> broken.
>
> If your BIOS has asks about a PnP OS, change it and try that. Generally,
> I say I have one, have said so since 2.4 kernels.
>
> If that does not work, say "no" and try assigning some IRQs in the BIOS.
>
>
> Shuffling cards might help, but most of my systems' PCI slots are empty.
>
>
>
>
>
> --
>
> Cheers
> John
>
> -- spambait
> 1aaaaaaa at coco.merseine.nu Z1aaaaaaa at coco.merseine.nu
> -- Advice
> http://webfoot.com/advice/email.top.php
> http://www.catb.org/~esr/faqs/smart-questions.html
> http://support.microsoft.com/kb/555375
>
> You cannot reply off-list:-)
>
> --
> fedora-test-list mailing list
> fedora-test-list at redhat.com
> To unsubscribe:
> https://www.redhat.com/mailman/listinfo/fedora-test-list
_________________________________________________________________
Send e-mail anywhere. No map, no compass.
http://windowslive.com/oneline/hotmail?ocid=TXT_TAGLM_WL_hotmail_acq_anywhere_122008
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.fedoraproject.org/pipermail/test/attachments/20090104/e3f1dfe0/attachment.html
More information about the test
mailing list