Re: [LAU] buying a new laptop

Device IRQs might be set is in the actual hardware itself. The
manufacturer might have hardwired that device (such as a USB or Firewire
controller) to a particular hardware IRQ line.

Device itself might be designed to require a particular IRQ. Don't know
if that's true anymore, used to be in the days of the E/ISA buses.

I don't think software can do anything about those situations.

BIOS might have option to change IRQs.

Diego Simak wrote:
> Yes, that page is for set the priorities of IRQ handlers, not the IRQ to
> a certain device.
>
> If you find how to do that let us know.
> Thank you!
> Diego
>
> 2011/9/8 andy baxter
>
> On 08/09/11 11:49, Diego Simak wrote:
>
> http://subversion.ffado.org/ wiki/IrqPriorities
> <http://subversion.ffado.org/wiki/IrqPriorities>
>
>
> That link is good for setting the priorities of irq handlers, but
> doesn't tell you how to move a device to a different irq, which is
> what I'd really like.
>
> I just had another look at the onboard firmware config system, and
> it does have a page that lets you assign devices labelled A,B,C...
> to different physical interrupts, but I'm not sure how to use this
> properly or safely. (There's no indication what device 'A' actually
> is). By default they are all set to INT 11, which doesn't come up in
> /proc/interrupts.
>
> andy
>
>
> 2011/9/8 Atte André Jensen <atte@email-addr-hidden <mailto:atte@email-addr-hidden>
> <mailto:atte@email-addr-hidden <mailto:atte@email-addr-hidden>>>
>
>
> On 09/08/2011 11:15 AM, andy baxter wrote:
>
> If you work out how to change it, please let me know, as it
> annoys me too!
>
>
> Sure!
>
> I've been using stock kernels for a while now, but is it true
> that
> this is only relevant when running a rt-patched kernel *and*
> setting up rt-priorities for IRQ's?
>
> In any case, where do I find a quick (re-)intro to how to
> tune the
> IRQ's?

-- 
David
gnome@email-addr-hidden
authenticity, honesty, community
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