PlanetZ forums - scopeusers.com

I am re-installing my system, a P4T-E motherboard, and have already gone into the bios and disabled onboard sound, and parallel and serial ports. When I go to the device manager now, I see two devices showing up with the warning symbol : under 'Other devices' I have an entry of 'PCI device'. Under 'Sound video and game controllers' I have 'MPU-401 compatible MIDI device'.

Now when I enable the serial ports in the BIOS, the MIDI device error disappears - somehow they're related (both serial transfer).

But I still get the 'PCI device' showing up. Even if I enable EVERYTHING in the bios, it still shows up. What is this device? I only have two cards in the machine now, video and network, and they both have proper drivers installed. I've also installed the Intel 850 chipset drivers and the application accelerator. I double click on the device, and it says location PCI bus 0, device 31, function 3. There's a program called 'Unknown Devices' that attempts to read the systems tables, and it displays this as a 'SMBus Controller'. Is this a problem I should resolve or can I just ignore it?


Update :
(1) the MIDI port shows up in device manager only when you disable the onboard audio. The serial ports and parallel ports don't have anything to do with it.
(2) though the unknown PCI device is not working, it gets an IRQ. If I enable a serial or parallel port and give it this IRQ number, when I reboot, the unknown device has acquired a new IRQ number.


<font size=-1>[ This Message was edited by: Liquid Len on 2005-10-31 18:44 ]</font>

The MPU401 is the gameport which can also function as a MIDI interface given the correct cable. Most BIOSes let you disable it.

Not sure what the unknown PCI device is.. could be anything built into your mobo. SATA/Raid device perhaps?

o.k., now for the dumb question. have you installed motherboard (inf) drivers yet?

if so, delete the unknown device and see what shows up upon reboot. the new hardware wizard will give you some clues, possibly....

On 2005-10-31 20:34, garyb wrote:
o.k., now for the dumb question. have you installed motherboard (inf) drivers yet?

if so, delete the unknown device and see what shows up upon reboot. the new hardware wizard will give you some clues, possibly....

Yes, I've installed the Intel 850 chipset drivers (inf) and also the application accelerator. I went to support.intel.com and did a search on Intel 850 and they recommended these two programs. Though to be honest everything worked more or less ok with the last setup, in terms of hard drive access, without these specific intel drivers. I've tried deleting the device but it get re-detected. Also, I just installed W2K fresh and even before the intel drivers were installed, the unknown PCI device showed up.


<font size=-1>[ This Message was edited by: Liquid Len on 2005-10-31 21:10 ]</font>

well, until you find it, you can disable it. that'll save the irq.

your scope driver is installed?(of course it is...)

nothing else in a pci slot?

*edit* if it's the smbus controller, that should be in the inf install. maybe the inf did not install properly. an oem version of xp home is only $90......

<font size=-1>[ This Message was edited by: garyb on 2005-11-01 00:57 ]</font>

SMBus controller monitoring via windows your system temperature and rpm fan,it is route on pci slot and condivide the same IRQ,if yuo dont use system software monitorin you can disable it

sorry for my bad english

<font size=-1>[ This Message was edited by: bronYaur on 2005-11-19 09:03 ]</font>