Re: NForce2 + linux 2.6.3-rc2 + acpi,apic patches

From: Mark Rutherford
Date: Sun Feb 22 2004 - 12:39:50 EST


Jesse,

I saw this thread on the mailing list about your sucess with the nforce2...
I havent had much sucess with it, and was wondering if you have tried -rc3
Also, do you know if Andrew Morton's patches are cumulative?
would he have these patches in rc3-mm2 ?

I have been using my nforce2 machine in XT-PIC ... and its pretty bad.
I have some hardware that doesnt want to share the irq so it gets dicey.
I would like to get it fixed, I have posted, but I didnt get a response.

Thanks!


On Tuesday 10 February 2004 08:29 pm, Jesse Allen wrote:
> Hi,
>
> I have noticed two patches in Andrew Morton's tree, 2.6.3-rc1-mm1, that may
> be helpful for me and other nforce 2 users. The two patches are
> nforce-irq-setup-fix.patch
> 8259-timer-ack-fix.patch
>
> I have compiled 2.6.3-rc2 with those two patches included. Here is
> /proc/interrupts after reboot:
> 0: 2347129 local-APIC-edge timer
> 1: 6604 IO-APIC-edge i8042
> 2: 0 XT-PIC cascade
> 4: 4458 IO-APIC-edge serial
> 7: 0 IO-APIC-edge parport0
> 8: 1 IO-APIC-edge rtc
> 9: 0 IO-APIC-level acpi
> 14: 4456 IO-APIC-edge ide0
> 15: 17 IO-APIC-edge ide1
> 20: 239364 IO-APIC-level eth0, ohci_hcd
> 21: 0 IO-APIC-level ehci_hcd, NVidia nForce2
> 22: 0 IO-APIC-level ohci_hcd
>
>
> Timer is now local-APIC-edge instead of XT-PIC. Seems to be better now.
> I've checked to see if the problem with large clock time gain returned. So
> far, it seems to be perfectly synced with my watch.
>
> I don't know if local-APIC or IO-APIC are really any different with the
> timer. If there is something I should know about the difference, someone
> please let me know =)
>
> Also, here's a snippet from dmesg:
> enabled ExtINT on CPU#0
> ESR value before enabling vector: 00000000
> ESR value after enabling vector: 00000000
> ENABLING IO-APIC IRQs
> init IO_APIC IRQs
> IO-APIC (apicid-pin) 2-0, 2-16, 2-17, 2-18, 2-19, 2-20, 2-21, 2-22, 2-23
> not connected. ..TIMER: vector=0x31 pin1=2 pin2=-1
> ..MP-BIOS bug: 8254 timer not connected to IO-APIC
> ...trying to set up timer (IRQ0) through the 8259A ... failed.
> ...trying to set up timer as Virtual Wire IRQ... works.
> Using local APIC timer interrupts.
> calibrating APIC timer ...
> ..... CPU clock speed is 1912.0861 MHz.
> ..... host bus clock speed is 332.0671 MHz.
>
>
> Thanks Ross and Maciej for the patches!
>
> Jesse
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