Messages in this thread | | | Date | Fri, 19 Sep 2003 13:17:52 -0700 | From | Greg KH <> | Subject | Re: 2.4.22 USB problem (uhci) |
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On Fri, Sep 19, 2003 at 12:17:11PM -0700, Jan Rychter wrote: > >>>>> "Greg" == Greg KH <greg@kroah.com> writes: > Greg> On Thu, Sep 18, 2003 at 08:10:48PM -0700, Jan Rychter wrote: > >> Upon disconnecting an USB mouse from a 2.4.22, I get > >> > >> uhci.c: efe0: host controller halted. very bad > >> > >> and subsequently, the machine keeps on spinning in ACPI C2 state, > >> never going into C3, as it should (since the mouse is the only USB > >> device). > >> > >> If afterwards I do 'rmmod uhci; modprobe uhci', then the machine > >> starts using the C3 state again. > > Greg> If you use the usb-uhci driver, does it also do this? > > If you mean strange messages, no, it doesn't. Using usb-uhci it just > says "USB disconnect..." and everything looks fine. > > As to C-states, usb-uhci prevents Linux from *ever* entering C3, being > effectively unusable on some laptops -- so there is no way I can see the > same symptoms with it.
If you want to suspend using 2.4, unload the usb drivers entirely. That's the only safe way.
thanks,
greg k-h - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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