i´m frustrated about my PCI capacity

dest4b · Post by **dest4b** » Tue Jun 08, 2004 3:51 am

Hy,
i have upgraded my PC from a MSI 845PE Mainboard to a MSI 865Neo2.Now o got PCI capacity problems. ( never had before (with same config on 845Pe))

To my System:

MSI 865Neo2
1 Gig Dual DDR
P4e 3.2 Ghz
Matrox G450 AGP DH 32MB (Busmaster disabled)
Matrox G450 PCI DH 32MB (Busmaster disabled)
3 x Pulsar II SFP4

I have installed Windos XP in ACPI mode and in Standard PC mode. I have the newest drivers for chipset VGA Bios update ect.
Also i have mixed around the Cards in the Pci slots. No changes.
Of course i have disabled every onboard device.

And now if i open a Prooject in SFP it´s ok but when i try to load a logic file the system i get a nice "PCI Capacity error."

Im on my end

°°°

Now i hope some one have the "HINT" for me.
Have someone experiences with the "MSI 865PE Neo2" ???

your sfp loving

[r4Ge]

Plato · Post by **Plato** » Tue Jun 08, 2004 4:01 am

Hi, I have no experience of this particular mobo, but I think the problem could be graphics-related.....Because Scope is so demanding on the PCI bus, it won't like sharing it with any graphics card.....
Try disabling/removing the PCI Matrox and see what happens....if it works, get a dual head AGP card (I presume that's why you've got 2 cards?)

Counterparts · Post by **Counterparts** » Tue Jun 08, 2004 4:19 am

I agree with Plato - did you have a PCI graphics card in your previous set-up?

I think that it's well worth simply removing it from the machine to judge its effect.

Royston

edit: what's the chipset on that MOBO by the way?

[ This Message was edited by: Counterparts on 2004-06-08 05:21 ]

dest4b · Post by **dest4b** » Tue Jun 08, 2004 4:20 am

thanks for reply but ..
this are both Dual Head GarpixCards

G450 PCI+AGP i need/want 3 monitors ..
and it have worked before very fine ( on my old 845PE )

still sfp lovin
[r4Ge]

Plato · Post by **Plato** » Tue Jun 08, 2004 4:25 am

hmmmm, that's frustrating.
Have you tried reducing graphics acceleration;
Increasing AGP Aperture in BIOS;
Increasing PCI Latency in BIOS ?

dest4b · Post by **dest4b** » Tue Jun 08, 2004 4:33 am

thats realy totaly frustrating ..

because the system have worked before
and i have moved the PCI legacy timer tho maximum and no change .. i have disabled the graphic accerleration no change. I have set Screen bitrate to 16 bit no change.
btw. the Pulsars dont share any IRQ ..

Plato · Post by **Plato** » Tue Jun 08, 2004 4:37 am

Maybe run in Stndrd PC mode and try getting them to share, then ?

Counterparts · Post by **Counterparts** » Tue Jun 08, 2004 4:38 am

[r4Ge] wrote:
thats realy totaly frustrating ..
because the system have worked before

Weeeeell, not really, as it's a different MOBO. Changing stuff like the graphics acceleration isn't going to make much of a difference.

I think that it's important to try to deternmine where the problem actually is / what's causing it. Do you still get the PCI overflow mesasge with the PCI graphics card removed?

Is the chipset on the new MOBO the same of the old one? (& what chipset is it?)

Royston

edit: do you have USB2 support enabled or disabled in the BIOS by the way?

[ This Message was edited by: Counterparts on 2004-06-08 05:40 ]

Post by **garyb** » Tue Jun 08, 2004 4:43 am

get a 3 head card.

dest4b · Post by **dest4b** » Tue Jun 08, 2004 4:47 am

It is a intel 865 chipset before it was an intel 845 chipset.

I have tried ACPI and standard mode. I also have done some Windows tweaking...

And ALL aditional USB and Firewire and S-ATA devices are disanled in the BIOS. I also tried to disable gigabit port.

[ This Message was edited by: [r4Ge] on 2004-06-08 05:48 ]

Plato · Post by **Plato** » Tue Jun 08, 2004 4:53 am

I have 865 set too, and with Cubase it's definitely happier in Stndrd PC mode......I do think it would be good to try & get the IRQs the same.....or get a triple-head.

dest4b · Post by **dest4b** » Tue Jun 08, 2004 4:55 am

All PulsarsII are on IRQ 9 shared with nothing.
Also under WinXP Standard mode i got the Error.
YOu mean a change to Matrox G750 could help ? :/ and if not ?

[ This Message was edited by: [r4Ge] on 2004-06-08 05:56 ]

Plato · Post by **Plato** » Tue Jun 08, 2004 5:04 am

If it's got 3 monitor-outs.....it would certainly cut down on PCI taffic, but as suggested, try removing the PCI Matrox first to see if the same thing happens.

astroman · Post by **astroman** » Tue Jun 08, 2004 5:34 am

On 2004-06-08 05:33, [r4Ge] wrote:
...because the system have worked before
and i have moved the PCI legacy timer tho maximum and no change ..

I might be wrong, but isn't a low PCI latency value what your're after ?
The higher the value, the longer the card can 'occupy' the bus and prevent others to get their share - you almost lock out the Scope cards that way.
It is NOT the same kind of latency as in ASIO

good luck, Tom

alfonso · Post by **alfonso** » Tue Jun 08, 2004 5:36 am

PCI graphics it's a performance killer just for the fact it stays there.
Remove it....

dest4b · Post by **dest4b** » Tue Jun 08, 2004 5:58 am

I have removed the PCI Matrox yesterday and it have no errors but i only tested for 1/2 hour.

:/

YUp astroman .. i mean PCI Latency ..

but .. you mean a to high value could be bad and a to low value too ?
What is the optimal setting ? 32, 64 , 128 , 300 ?

Micha · Post by **Micha** » Tue Jun 08, 2004 6:21 am

64 is normal setting, 128 and more is better.

at0m · Post by **at0m** » Tue Jun 08, 2004 7:04 am

I think there's some confusion about the PCI latency, as astroman already tried to explain:

PCI latency should be as low as possible - it's the # of PCI ticks that a device can reserve the PCI bus for itself. Shorted PCI latencies cycles all devices' access faster and should make for smoother operation.(*)

And yes, PCI gfx can easily kill the bus. Great it worked on your old motherboard, but if anything goes wrong, disable or remove that card first. Should be a leap ahead in stability.

There's a topic on the Matrox parhelia here on z. The basic 650 was only dualhead as I understand, and it was cheaper to get an expansion for that one than to get the 750 triple head straight away. That is, if you're considering replacing the gfx card to continue your triple monitor setup.

My 2 cents, hope you can make music soon again!

_________________
More has been done with less.

(*) [edit] A practical example: some network card's use high latencies to boost their benchmark points, it looks great in the magazine's comparison chart. Other cards use shorter PCI latencies and let the PCI bus cycle between devices faster. The latter have lower benchmark speeds, but guess which works best with Pulsar.

[ This Message was edited by: at0m|c on 2004-06-08 08:53 ]

dest4b · Post by **dest4b** » Tue Jun 08, 2004 7:21 am

hey at0m|c

hm thanks for best wishes !
im going insane. Im @ work and I dont
want to go home to see this disaster ..

I will test the setup without PCI matrox this evening more than a 1/2 hour .. and i wish it will work ...

[r4Ge] >:)

Counterparts · Post by **Counterparts** » Tue Jun 08, 2004 7:47 am

[r4Ge] wrote:
It is a intel 865 chipset before it was an intel 845 chipset.

My MOBO has the intel 845 chipset which works very well for me. I'm not familiar with the 865 set, but these devices (the North & South bridges) are absolutely critical for PCI bandwidth.

I certainly wouldn't be at all surprised if intel had gone and broken something when changing the chipset design :-/

Sounds like you have less PCI bandwidth overall with the new MOBO, which is why the PCI graphics card is sending it over the edge.

Was the MOBO the only thing you changed in your PC? I was wondering why it was that you changed this component, if the system was working OK before?

Royston