Messages in this thread | | | Date | Mon, 3 Apr 2006 10:36:23 -0400 (EDT) | From | Alan Stern <> | Subject | Re: [linux-usb-devel] Problems with USB setup with Linux 2.6.16 |
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On Sun, 2 Apr 2006, Joshua Kwan wrote:
> On 04/02/2006 07:09 PM, Alan Stern wrote: > > If you were to continue looking farther down in the log, you would find > > that ehci-hcd sees all those devices. Those that can run at high speed > > continue using the EHCI controller. For those that can't, the switch is > > reset and they get reconnected to their UHCI controller. > > That makes sense - that is indeed what happens when it DOES work (i.e. > with 2.6.15), but the fact is that they don't come back in 2.6.16. I > will try building ehci-hcd in and see what happens.
If the devices don't come back, it's an indication that some driver has hung. A stack trace (Alt-SysRq-T) should help identify which driver is in trouble.
Alan Stern
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