what causes: kernel:[38405.042543] do_IRQ: 0.81 No irq handler for vector (irq -1)

[Ranjan Maitra]

Hello,

On Wed, 1 Oct 2014 21:34:18 +0200 Heinz Diehl <htd+ml at fritha.org> wrote:

> On 01.10.2014, Ranjan Maitra wrote: 
> 
> > Unfortunately, there are hard lockups.
> 
> Then, you should definitely report this to the Fedora kernel folks.
> You can also try with a vanilla kernel from kernel.org, and if the
> problem persists, you could report it directly to the linux kernel
> mailing list.
> 
> > How do I disable irqbalance?
> 
> You can do a "yum remove irqbalance" or a "systemctl disable
> irqbalance.service". And add "acpi_irq_nobalance" to the kernel boot
> parameters in grub.conf.
> 
> > And there appears to be no irq.c on my system. 
> 
> It should be in the arch/x86/kernel/ directory of your kernel sourcetree.
> It's been quite a while I tried to understand this area of the kernel.
> 
> [....]
> 
> > I did submit a bug report yesterday but it has not been assigned yet.
> > Looks like an obscure issue. 
> 
> This (and/or similar bugs) are going on for a while. I remember
> those hard lockups from quite a few years back in time (at least in
> the 2.6 generation). Not sure if they have the same origin/cause,
> though. If I remember this correctly, both a racy irq migration
> code as well as a faulty BIOS were discussed.
> 
> Maybe there is a BIOS update for your machine?

I just wanted to mention that the BIOS update did not have any effect
(the system still has the same problems waking up from hibernate).

How does one go down to a 3.15.10 kernel? I could try that and see, I
guess. Would it also downgrade the headers, etc?

Many thanks,
Ranjan

> 
> 
> 
> 
> 
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