This is a bit of a strange issue that has baffled me. I own a Dell Inspiron laptop with Ubuntu 18.04(i upgraded from 16.04 that came pre-installed). The laptop has USB 2 ports and one USB 3.0 port(the blue one). The problem is that the USB 3.0 port does not reliably detect devices. The only device I can consistently mount on it is a Western Digital external HDD. The port refuses to detect non USB 3.0 devices at all(older pen drives, dongles), and a Sandisk 3.0 pen drive I have works sporadically: sometimes it won't be detected, but if I put in the Hard drive first and then remove it and put the pendrive in; or if I plug the pendrive in a USB 2.0 port and then take it out and put it in the USB 3.0 port; it gets detected.
The port outputs power without problem, and it transfers data fine so that makes me think its not a hardware issue, but i don't feel very sure because the issue started shortly after I replaced the laptop keyboard with a cheap, spurious one that i got from Ebay, after spilling orange juice on the original one. I'm not sure if the two are related, but the port started to malfunction shortly after the juice spill.
Any help would be greatly appreciated.
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