Messages in this thread | | | Date | Sat, 2 Jun 2007 09:39:47 -0700 (PDT) | From | Linus Torvalds <> | Subject | Re: [RFC][PATCH] IO-APIC blacklist |
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On Sat, 2 Jun 2007, Tear wrote: > > I own a Dell OptiPlex GX240 which, when ACPI is disabled > but IO-APIC is enabled, shows very slow USB performance. > I thought that this could be related to IO-APIC and > tried to boot with "noapic" appended to the kernel > command line. This way the USB transfer speed returned > to normal values.
Well, it's almost certainly not the IO-APIC per se.
It's more likely to be some irq routing issue, where ACPI fixes up something. Do you have diffs of 'dmesg' with and without ACPI?
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