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Shared IRQs causing troubles?
Cyberblade and VIA Tech USB share IRQ

New MessageShared IRQs causing troubles? (modified 0 times) sodomizer
I'm wondering if some of the strange behaviour people have been seeing after installing a
USB to Ethernet adaptor might be caused by IRQ sharing. After I installed the Cyberblade
driver, there was assorted junk (graphics, etc.) on reboot. I've also seen the blank screen
at bootup and had the USB-Ethernet freeze up once. At the moment, the system seems stable overall.

I'm running Win98, have the VIA 4in1 driver installed (17, not 20). System info for IRQs shows
only one IRQ Holder for PCI Steering on IRQ 15. The Trident and the USB both show up on
IRQ 15. IRQs 6, 9, 10, and 11 are free. My desktop machine shows at least two IRQ Holders.

I've not been able to get the IRQs to seperate using the BIOS. Reserving IRQs to Legacy ISA just
moves the shared IRQ around.

Is there a manual way to force the IRQs? The device manager doesn't allow any changes over the
automatic setup.

Thanks....

06-11-2000 14:51:36

New MessageRE:Shared IRQs causing troubles? (modified 0 times) BigTex
Profile
Did you ever resolve the irq sharing? If so, how?
01-09-2001 21:52:15

New MessageRE:Shared IRQs causing troubles? (modified 0 times) sodmeister
Profile
BigTex -

Nope, never got the IRQs the way I wanted them. I changed over to a Linksys USB ethernet adapter and
that solved the networking instability, but the video and USB still share an IRQ (dammit!)

I've got the same problem with my desktop machine, the PCI video shares with just about everything.
When I get it alone, then the sound card isn't on IRQ11 and it won't work!

PCI scanning is what does the "sharing". You can change the IRQ assignment order in a desktop by
changing the slots of cards, but that can't be done on an I-opener. Unless there is something in
Window's registery, I don't think we'll ever have enough control over the IRQ assignments.

Just another victim of "plug-n-play" I guess....


sod ( "The lunatics are on the grass..." )
01-10-2001 09:16:00

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