Messages in this thread | ![/](/images/icornerl.gif) | | From | "Edward Wildgoose" <> | Subject | Re: Interrupt problem, no USB on SMP machine with 2.4.19/20/21 | Date | Fri, 7 Mar 2003 23:27:23 -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
booting my -ac kernel with noapic gets the USB working (hooray and thanks). I am just recompiling my gentoo-sources kernel to see if I can make that work (it certainly doesn't without ACPI enabled).
I will play with config files and kernel sources and see if I can determine whether anything *other* than the -ac branch will work correctly. Is there any way that I can usefully help feed that info back to the developers? Are there any tests that I can try?
Thanks for your help all
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