Re: "Disabling IRQ #9" - how to check for impact

From	Christian Britz <cbritz@t-online.de>
Newsgroups	linux.debian.user
Subject	Re: "Disabling IRQ #9" - how to check for impact
Date	2022-04-28 10:40 +0200
Message-ID	<Eh7QR-bJNA-3@gated-at.bofh.it> (permalink)
References	<EgnO1-bgYt-3@gated-at.bofh.it> <Eh0FH-bEMS-3@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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Hello Ilya,

thank you for sharing so many interesting details!

On 2022-04-28 02:53 UTC+0200, IL Ka wrote:

> This is a known kernel
> bug: https://bugzilla.kernel.org/show_bug.cgi?id=207749
> <https://bugzilla.kernel.org/show_bug.cgi?id=207749> 

I was almost sure the messages first appeared after the firmware update,
but the kernel bug is much older. I will definitely follow this thread.

> As we see from stacktrace, this handler is "acpi_irq" (you can also
> check it by reading /proc/interrupts):

There is a high number on CPU1:

   9:          0  819113116          0          0          0          0
         0          0  IR-IO-APIC    9-fasteoi   acpi

Should I be worried about that?

> Many hardware things in laptops use ACPI: Brightness buttons, FN
> buttons, volume buttons, lid etc.

They seem to work.
> If everything works as expected (you see no problem with lid, buttons
> etc) simply ignore it.

It seems so.

> If no, try to install the latest kernel and file a bug to Debian (I

Latest kernel from backports did not help.

> You can also add "irqpoll" kernel param which will ask the kernel to

I think I have read somewhere that this can make the machine very slow.

So far I notice no impact of the bug, luckily. I guess I will live with
it and hope for a fix in a kernel of a later Debian release.

Best Regards,
Christian

-- 
http://www.cb-fraggle.de

Thread

"Disabling IRQ #9" - how to check for impact Christian Britz <cbritz@t-online.de> - 2022-04-26 09:30 +0200
  Re: "Disabling IRQ #9" - how to check for impact IL Ka <kazakevichilya@gmail.com> - 2022-04-28 03:00 +0200
    Re: "Disabling IRQ #9" - how to check for impact Christian Britz <cbritz@t-online.de> - 2022-04-28 10:40 +0200
      Re: "Disabling IRQ #9" - how to check for impact Christian Britz <cbritz@t-online.de> - 2022-05-03 09:40 +0200

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