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

[Christian Britz <cbritz@t-online.de>]

Problem seems to be gone with latest Debian stable kernel update! I
don't see the message anymore with 5.10.113.

On 2022-04-28 10:34 UTC+0200, Christian Britz wrote:
> 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
> 

-- 
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