Cheap mobo that doesn't cause issues with Ubuntu.

Liam Proven lproven at gmail.com
Wed Feb 15 16:53:41 UTC 2017


On 15 February 2017 at 09:06, Ralf Mardorf <silver.bullet at zoho.com> wrote:
> At least one PCIe slot, one PCI slot and one USB port must have an IRQ
> that isn't shared with anything else.


PCI should not be that hard to find. PCI-e is normal.

A PS/2 port is most often found on gamers' motherboards today. Some
extreme gamers feel that USB mice suffer from latency or jitter and
prefer PS/2 mice. I think this is as completely untrue as homeopathy,
but hey, their choice.

(I suppose I should not criticise too much myself here, as I am typing
on an IBM Model M keyboard that was made on 1993-01-25. At least one
of my colleagues on my current contract is younger. It is attached to
a Thinkpad X220 that I just bought last month but which is itself 3-4
years old.)

You cannot get the IRQ line specified, though, I think. On
plug-and-play systems -- anything with ACPI-capable firmware -- this
is specified dynamically at boot time. On PCI systems, IRQ sharing is
normal, as IRQs are level-triggered not edge-triggered as they were on
ISA computers.

So many things might share the IRQ of any given device, and that IRQ
could vary from one boot up to the next.

Windows offers ways to reserve such resources but I don't think Windows does.

-- 
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