On Thu, 22 Jul 2004, Wes Janzen wrote:

> I've been having trouble with USB since 2.6.8-rc1; khubd ends up 
> blocking on something which makes USB hotplugging stop working (and only 
> half my devices even get initialized).  I did get 2.6.8-rc1 to work once 
> though it seemed to help inserting modules before calling hotplug.  
> However I haven't been able to repeat that during my last 5 attempts 
> with no changes besides a reboot.  I'm running 2.6.7-ck5 right now with 
> no apparent problems.
> 
> I haven't done extensive testing, but things seemed to work OK until I 
> plugged in my Belkin F5U231 4-port multi-tt hub.  My other hub is a 
> 4-port single-tt Belkin F5U224.
> 
> I've attached the usb messages from 2.6.8-rc2 booting with the hub 
> attached and then the little bit I see in the log if I don't plug-in the 
> F5U231 until after the rest of the USB devices have been attached.
> 
> Please let me know what further information or action on my behalf will 
> help find the solution to this problem.
> 
> Thanks
> 
> Wes Janzen

It looks like your troubles start when your USB printer is probed or 
detached.  What happens if you simply leave the printer unplugged and boot 
up -- is everything okay then?  And then if you plug in the printer later 
on, what happens?

Alan Stern



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