Messages in this thread | | | Subject | Re: Interrupt problem, no USB on SMP machine with 2.4.19/20/21 | From | Alan Cox <> | Date | 07 Mar 2003 23:35:50 +0000 |
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On Fri, 2003-03-07 at 22:13, Greg KH wrote: > Have you booted with "noapic" on the command line? That's the only way > a lot of VIA motherboards will get their onboard USB controller to work > properly.
VIA onboard devices require the interrupt line and pin are both written in APIC mode. Linux for reasons I still don't understand does not do that by default. The current -ac tree has a quirk for this although it doesnt seem to be working for all cases and needs a victim to review it more carefully
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