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Quickly, before GeekMaster slams me (again) for not writing a helpful post.
Before connecting the usb cable, what do you expect to see in the kernel message buffer?
You must be able to answer that question if you are going to do any problem solving.
Here is a starting point to help you answer that question:
(the '-c' option clears the message buffer, which requires 'root' privledges)
sudo dmesg -c
Insert a removable USB device, a USB stick if you have one
dmesg
Cut & paste the result somewhere you can refer to it later.
If your desktop automation auto-mounted the USB stick, unmount it.
sudo dmesg -c
Remove the USB stick
dmesg
Cut & paste the result somewhere you can refer to it later.
Now carefully follow the directions GeekMaster directed you to, upto and just prior to inserting the USB cable.
sudo dmesg -c
insert the USB cable
dmesg
Cut & paste the result somewhere you can refer to it and compare with the expected result you saved above.
What are the differences?
Can you account for the differences?
(ans: the only significant difference might be the device name, which is dynamically picked in "discovery order" unless your re-naming it with a udev rule).
Are there any error messages or warning messages included in the kernel messages from inserting either the USB stick or (later) insterting the USB cable?
What are they? (there should not be any warnings or errors)
Can you account for the differences?
You must have a properly recognized device before going any further.
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