kernel panic with pure usb2umass pluged on pure usb1only motherboard port

[Mathieu PREVOT]

> Could you have:
>
> sysctl hw.usb.debug=15
no, it is equal to 0
I did:
sysctl -a | grep usb > txt.sysctl.usb

and:
sysctl -a > txt.sysctl-a


> Then get USB debugging errors into the picture. Maybe it is a little 
> difficult
> to write all of that down, but maybe you can post what is shown when 
> you
> attach your device.
In txt.messages.tar.bz2 you will find a part of /var/log/messages
There you will find t

> Have you used "cvsup" before building the kernel sources ?
no, the sources are from the 5.4 release iso.

> After you plug the device:
>
> sysctl -a |grep usb
the output is exactly the same as before (txt.sysctl.usb)



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