The only reference I can find to usb in a search of the strace output is:
0.001723 stat("usb:", 0x7ffe93f30be0) = -1 ENOENT (No such file or directory)
Yes from what Manfred says it seems likely that the ubuntu
distribution I'm using has only half the hotplug fix implemented. It
does not have the additional driver problem but still has USB access
restricted to root.
Stephen
On Fri, May 13, 2016 at 4:11 PM, Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> wrote:
> On Thu, 12 May 2016, Stephen Furner wrote:
>
>> I apologise if this is a duplicate I had a bounce back from the list
>> due to it since I had inadvertently included HTML. So I am resending.
>>
>> To: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>
>> Cc: USB list <linux-usb@xxxxxxxxxxxxxxx>
>>
>> Alan,
>>
>> I have looked through the strace output the following excerpt below
>> directly includes references gebabbel. Is this more in line with what
>> you were expecting it to reveal?
>
> The relevant lines would be those referring to /dev/bus/usb and the
> lines following such references.
>
>> I can of course send the full file to
>> anyone interested in the complete output. It is too large to insert
>> into an e-mail and there is a lot of repetition of my original
>> excerpt.
>>
>> Good point about ubuntu forums. This issue is also question #293560 on
>> the forum https://answers.launchpad.net/ubuntu
>
> The suggestion about adding an /etc/udev/rules.d file looks like a good
> one.
>
> Alan Stern
>
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