http://bugzilla.suse.com/show_bug.cgi?id=954324
http://bugzilla.suse.com/show_bug.cgi?id=954324#c7
--- Comment #7 from kolA flash ---
Thank you a lot for your help!
Will you report/fix this upstream?
I did some more testing:
The full error message lsusb usually reports when nousb is in use on openSUSE
13.2 is:
unable to initialize libusb: -99
Return code is 1 (normally 0, if USB isn't disabled).
Using usbcore.nousb=1 on openSUSE 13.2 or Ubuntu 15.10 seems to have no effect.
So there's probably not one way to disable USB on kernels with buildin USB and
kernels with USB module, except putting both nousb and usbcore.nousb=1 in the
commandline (I actually did that and it worked fine).
Using usbcore.nousb=1 on openSUSE 42.1 and Tumbleweed disables USB as expected.
/sys/module/usbcore/parameters/nousb is Y is usbcore.nousb=1 is in use.
But lsusb behaves a little different. Is exits without any message.
Nevertheless this is probably not relevant (and maybe due to the different
lsusb version on 42.1/current Tumbleweed relative to 13.2)
Return code of lsusb is 1 as expected.
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