Re: Solved Interrupt Problem with PGC-GR290K

> (snip the long story)
> 
> Finally, I built the 2.4.21 kernel from kernel.org.  Here's where I 
> learned about ACPI, APM, and APIC (don't know if APIC figures as part
> of the solution, but it had some interesting things to say in dmesg
> which I'll relate later).
> 
> Turned off APM in xconfig which allowed ACPI to run.  Still no luck.
> 
> Here's the important stuff ....
> 
> I applied the acpi-20030619-2.4.21 patch from 
> soruceforge.net/projects/apci.  Now ACPI discovered the interrupts
> for the modem, third USB port, and the Firewire port and mapped them
> to IRQ 9 (along with a lotta other stuff).
> 
> Now the following works just fine:
> 
> modprobe ieee1394
> modprobe ohci1394
> modprobe sbp2

So you discovered that running the latest stable kernel, with the latest
ACPI patch that was made for this kernel, would work. I'm sorry to say
that's the very first thing you should have tried. I wouldn't even have
imagined someone could post about any problem on this list before trying
this first, evident kernel configuration.

Since the day the ACPI patch was available, I have *always* been running
the latest stable kernel with the latest ACPI patch that was made for
it. And it always worked, and worked better each time. Why would the
kernel and ACPI developpers work, if not to solve our problems?

> PS about APIC.  When it came up it said that the APIC had been
> disabled by the BIOS (now why would it do that?), and APIC had
> re-enabled it. Interesting.

Same here. It seems that on recent kernels+acpi versions, enabling APIC
is required in order to have ACPI working. This wasn't the case earlier.
And for me too, at boot time it is said that the BIOS had disabled the
APIC and that it would be re-enabled. I don't know what it means, but it
works OK like that.

-- 
Jean Delvare
http://www.ensicaen.ismra.fr/~delvare/