[UPDATE] Re: mysterious keyboard, mouse lockups with FC5

[Filippos Klironomos]

Digging around on this problem I have an update to announce. Instead of
turning off APIC completely
by passing the 'noapic' option to the kernel, I instead forced the local
APIC to take over with the 'lapic'
commnad. This enabled interrupt sharing (and increase of speed) between the
2 CPUs so it is
an improvement!

The system has been up for  5 days now with no freezes.

Filippos

On 4/24/06, Filippos Klironomos <presariod(a)gmail.com&gt; wrote:
>  DSDTs are part of the BIOS interface to ACPI (Advanced Configuration and
>  > Power Interface). BIOS ACPI implementations are notoriously buggy, and
>  > can easily crash kernels. So you may need to turn that off (noacpi --
>  > you'll lose hardware power-off).
>
>
>
>  Passing the 'noapic' option to just turn off APIC fixed the freeze problem
>  along with
>  the 'ata1:' related messages. So that was the solution. I can't turn off
>  ACPI completely
>  because not only I lose poweroff but the second CPU (it's a dual core
>  machine).
>
>
>  An APIC (Advanced Programmable Interrupt Controller, which is
>  > responsible for interrupt balancing, as you say) is pretty unrelated.
>  > You may well be able to turn off ACPI without turning off APIC.
>
>
>
>  Yep, that's what I did and believe it or not the system has been up and
>  running
>  for 5 days now with no freezes, when it took less than 24hours to freeze
>  previously. So I still have ACPI managing the second CPU (the system is
>  admitedly slower compared to when APIC is on) and for now I'm happy
>  with the solution. Older FC4 kernel versions did not freeze the machine so
>  I'm hoping eventually a newer kernel will fix this.
>
>  Filippos
>
>
>