Hello,
On Wed, 1 Oct 2014 21:34:18 +0200 Heinz Diehl <htd+ml(a)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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