One system seems to suffer from "khubd exit during startup"
more than others.  I applied that patch to make it ignore
signals, and noticed that while khubd no longer exited, it
didn't exactly start either:  stuck in D state like this:

khubd         D 00000000     0    72      1           243    11 (L-TLB)
Call Trace:
 [<c012322e>] reparent_to_init+0x12e/0x170
 [<e0827867>] usb_hub_thread+0x97/0xf0 [usbcore]
 [<c010906d>] ret_from_fork+0x5/0x10
 [<c011aba0>] default_wake_function+0x0/0x40
 [<e083b198>] khubd_wait+0x8/0x10 [usbcore]
 [<e083b198>] khubd_wait+0x8/0x10 [usbcore]
 [<e08277d0>] usb_hub_thread+0x0/0xf0 [usbcore]
 [<c0106ff9>] kernel_thread_helper+0x5/0xc

Somehow this doesn't look like a USB problem at all.

Does someone know what's up?

- Dave




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