APIC with Uni CPU

Discussion of ACPI driver (Power management, multi-processor support, PnP)
David McKenna
Posts: 60
Joined: Fri Jul 07, 2006 00:19

APIC with Uni CPU

Postby David McKenna » Tue Sep 18, 2007 05:35


I have been experimenting with using the 14.104a SMP kernal and ver. 3.02 ACPI on 3 different Uni CPU machines in order to try to get /APIC to load the IRQ's high. The machines are:

1. AMD Mobile Athlon 64 3200+, VIA K8T800 chipset
2. AMD Athlon 64 3200+, NVidia3 chipset
3. Intel P4 3GHz, Intel 875P chipset

All will load the SMP kernal with and without the /SMP switch on ACPI. When I add the /APIC switch, they all hang after loading all the drivers, but (apparently) before running any RUN= statements. A hard reset is required. Even removing UniAud, GenMac, and USB drivers does not help.

There is one exception. Computer #3 (with P4) has hyperthreading. With hyperthreading turned ON, the computer boots with the /APIC switch. Turn hyperthreading off and it hangs again.

With hyperthreading on it seems every 3rd boot or so, the computer runs very slow because the CPU and IRQ load is very high, but the IRQ's are all shown as being >13.


Dave McKenna

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Eugene Gorbunoff
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Posts: 685
Joined: Sat Apr 09, 2005 11:18
Location: St.Petersburg, Russia

Postby Eugene Gorbunoff » Tue Sep 18, 2007 09:23

Post 3 tickets to the tracker:

* Subj: ACPI, %computer model%
* Start with header:
* version of ACPI, APM driver
* computer model (or motherboard for desktop computer)
* tell in short, how it works and what changed from the previous testing

If you have a trap or hang then
* Remove OS2LOGO (Move file x:\OS2LOGO from root directory to other location)
* Install debug version of ACPI.PSD (you can find it in debug\ directory)
* Use switches which you need and which cause hang or trap
* If you get trap or hang then make photo of the screen using digital camera
* Send us the photo (.jpg)

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