Re: How to boot with the "irqpoll" option?
On Mon, Mar 9, 2015 at 10:41 AM, Kynn Jones <kynnjo@gmail.com> wrote:
> A log message in my /var/log/syslog file says:
>
> ... kernel: [ 61.599288] irq 16: nobody cared (try booting with the
> "irqpoll" option)
>
> I imagine that booting with the "irqpoll" option is achieved by adding
> a suitable entry to /boot/grub/grub.cfg, but this file clearly states
> that it should not be edited directly, since it is generated
> programmatically.
>
> I need more information to proceed, but I was not able to find any
> documentation on how to boot "with the 'irqpoll' option", either
> online, or by running
>
> # find / -name man -type d -exec grep -irl irqpoll {} \;
>
> on my machine as root.
>
> I would be thankful for pointers to the relevant docs, or for a recipe
> aimed to a grub-noob.
OK, I found a solution. I'll post it here, so that the next schlub
doesn't have to waste so much time as I did looking for it:
% sudo gedit /etc/default/grub
Change the line that sets the variable `GRUB_CMDLINE_LINUX_DEFAULT` by
adding 'irqpoll' to it. E.g. in my case, this entailed changing the
line
GRUB_CMDLINE_LINUX_DEFAULT="quiet"
to
GRUB_CMDLINE_LINUX_DEFAULT="quiet irqpoll"
After saving this updated file, run
% sudo update-grub
This should result in the rewriting of the file /boot/grub/grub.cfg.
Use, e.g.,
% less /boot/grub/grub.cfg
to confirm that the irqpoll parameter has been added to one of the
GRUB menu options.
Cheers,
kj
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