Comment 13 for bug 287576

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Michele Mordenti (micmord) wrote :

Same problem with kubuntu 8.04.2 (linux 2.6.24-24)

when I plug the external usb hub:
[ 182.788947] usb 5-4: new high speed USB device using ehci_hcd and address 6
[ 182.921415] usb 5-4: configuration #1 chosen from 1 choice
[ 182.922560] hub 5-4:1.0: USB hub found
[ 182.929209] hub 5-4:1.0: 4 ports detected

and then all usb devices stop working, I mean the usb device plugged in the hub and the usb device directly plugged in the other free usb pc ports.
Also if i unplugged the usb hub the kernel doesn't care, usb stops working at all.

I tried all the combination of pc/usb hub/kernel and the only that fails is kubuntu 8.04.2
 - Same hardware on an old gentoo 2007 works fine.
 - Same usb hub connected on a eepc901 with jaunty works fine
 - Same usb hub connected to a different hardware on kubuntu 8.0.4 fails.