Not sure whether this is a kernel, hotplug, or usb question.

Beginning somewhere in the 2.6.5-rc1-mmX series, all my usb devices are
apparently disconnected during the boot process -- they are detected but
subsequently made inactive. Post-boot lsusb output shows them still
attached, but all are nonfunctional. Unplugging and reconnecting them
produces no log output and doesn't make them functional.  Kernels in the
Linus tree up to and including 2.6.5-rc1-bk4 are fine, but 2.6.5-rc2
displays this behavior as does 2.6.5-rc2-mm1.

Trying to rmmod ohci_hcd or ehci_hcd results in a hung process.  So does
an attempt to restart hotplug.

Booting the computer with no usb devices attached and then plugging them
in later results in usable devices, but attempting to rmmod ohci_hcd at
that point just produces a hung process again.  So I'm a little suspicious
about the interaction between the kernel code and hotplug and/or
coldplugging.

I'm using a Shuttle SN-41G2, FN-41 mainboard, nForce2 chipset including of
course the onboard hubs.  Happy to turn on debugging, post logs, versions,
and configs, try patches and so on.

Cheers,
Mark





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