Re: How to boot with the "irqpoll" option?
On 3/10/15, Darac Marjal <mailinglist@darac.org.uk> wrote:
> On Mon, Mar 09, 2015 at 07:49:04PM -0700, Rusi Mody wrote:
>> On Tuesday, March 10, 2015 at 7:30:07 AM UTC+5:30, Kynn Jones wrote:
>> > On Mon, Mar 9, 2015 at 8:30 PM, Kynn Jones wrote:
>> > > On Mon, Mar 9, 2015 at 10:41 AM, Kynn Jones 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.
< snipped for brevity >
>> > > 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
\>> >
>> > Here's a different, more direct, approach:
>> >
>> > Reboot. When the GRUB menu comes up, select a suitable (Linux)
>> > option, but instead of pressing [RETURN], press 'e'. This will bring
>> > you to an editable screen. Navigate to the line that begins with
>> >
>> > /boot/vmlinuz-...
>> >
>> > Add ' irqpoll' at the end of this line, and then hit `Ctrl-x` to boot
>> > the system.
>> >
>> > This method has the disadvantage that the same procedure must be
>> > followed every time one wants to boot with "irqpoll" enabled. On the
>> > other hand, enabling "irqpoll" is considered only a temporary measure,
>> > so it's probably a good thing to keep its activation inconvenient.
>> >
>> > kj
>>
>> 3rd option.
>> Do the addition to the linux (ie kernel) line of /boot/grub/grub.cfg
>>
>> Yeah the file says dont do that.
>> The grub guys make that suggestion but dont really follow it themselves!
>> This will work until the next time some upgrade changes the cfg file
>
> Which is exactly WHY you're encouraged not to edit that file. People
> tend not to like having their configurations disappear without warning,
> so there's a big warning at the top of the file.
Am not.... completely "cognitively" grasping this one just this
second, but I said something similar myself to Darac's comment in last
week, maybe two, or so. One alternative is that this directory was
made available for us to use:
/etc/grub.d/
Maybe someone could point the OP to where in that might help *IF* that
directory does in fact help in this case.. Personally I've copied from
/boot/grub/grub.cfg and pasted into 40_custom, altered the pasted
section, and then updated GRUB for what were probably successful
similar changes. BUT again, cognitively am not functioning well enough
to share *exactly* how without potentially making this worse instead
of better, grin..
While I'm thinking on it, one thing I've never followed through on is
to find out how to make that type of change the default. If someone
has insight into that, I'm sure somewhere there's a Debian User who
would have and/or want that perk..
In the meantime, the other alternative THERE is to give the new
/etc/grub.d file entry a recognizable title that can easily be picked
out of the list that would have now grown by at least one entry at
boot.....
Cindy
--
Cindy-Sue Causey
Talking Rock, Pickens County, Georgia, USA
* :) *
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