On Wed, 5 Jul 2017 at 12:33:55 +0300
Lars Noodén <lars.nooden@???> wrote:

> On 07/05/2017 12:17 PM, Alessandro Selli wrote:
> [snip]
>
>> There are no Ethernet controllers in the list. See if unplugging and
>> re-plugging it produces log messages, and if it does see if they document
>> anything strange.
>>
>> You could also try to use the adapter on another machine, or boot the PC
>> with a different kernel.
>
> Yep did both actually. I had even tried power cycling the device.
> However, after I left it unplugged, without power for a longer period
> and then plugged it in again it showed up. So it looks like it was
> hardware-related.
>
> Anyway, thanks for helping walk through it.

Don't mention it, I did so little.

> I hope that it is not flaky hardware or that if it is that it fails hard
> early in this warranty period.

I could be. I've had a couple of USB storage sticks that did not show up
in a machine but were usable in another, or that would sometimes be correctly
identified and their partitions exposed, but sometimes were not and only
produced disconnection error messages in the logs. After some time, two years
at most, they definitely stopped working. But I also experienced some USB
devices (a WiFi adapter) that consistently failed to work on a laptop, but
always worked year after year on another. Go figure that out. Someone
suggested an unhappy match of USB host controller and the gadget's USB bus
interface electronics or firmware, who knows?


Have a good day,


--
Alessandro Selli http://alessandro.route-add.net
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