Bug#414689: USB lock still present in 2.6.21

[Dominique Dumont <domi.dumont@free.fr>]

Hello

Despite USB cabling change on my machine, I'm still bothered by
lock-up every now and then.

Here's what I found so far:

Lock up are likely to happen :
- during heavy I/O on usb disk (like par2create on a 4GB file)
- when dvb-usb-nova-t-usb2 is loaded 

In this case, my keyboards also locks up (even though the mouse is
still working). I've verified that this lock-up can also happen when
Xorg is *not* running (keyboard lock up also). 

When dvb-usb-nova-t-usb2 is not loaded, reproducing the lock-up is
much harder. But I got one while writing a 4GB file on my USB
disk. Strangely enough the keyboard was not locked up this time.


What can I do to help investigate this issue ?

Thanks