New 4-port USB 3 Hub > Not recognising inserted devices >
by Noob-Tech-Ninja from LinuxQuestions.org on (#6EM1Y)
Hi there guys.
I was hoping that you could provide some insight into a strange issue that
I've been experiencing
I've only got x2 usable USB 3 ports on the back of my PC
They get used / used up, frequently and it prevents me from using other
high speed USB 3 devices in them.
I have very recently bought a 4 port, USB hub, USB 3 speed (Type-A USB connection).
To try and remedy the issue.
Problem:
The PC doesn't recognise devices when I put them into the new USB hub
(It's very intermittent - approx 1/8 or 1/10 times that a device will be recognized
and usable).
Troubleshooting:
1. Tried multiple different USB sticks (and powered external HDD),
in all x4 of the USB ports on the Anker hub = Same issue
(The devices do not show up on the host PC - but the Anker hub
does show up when using either the "lsusb" or "dmesg" CLI commands).
2. Tried both of the USB 3, ports on the PC with the Anker USB hub = Same issue
3. Tried using a USB 2 slot, the issue "appears" to go away and devices are
recognised on the Hub (I've only tried this a couple of times though).
4. Tried the Anker Hub on my Laptop (running Ubuntu 20.04 LTS) = Appears to have
worked - However, again I've only tried this twice on the Laptop.
So not an exhaustive test.
Questions:
1. What could be causing this behaviour ?
2. Have I bought a "lemon" ?
3. Am I missing anything (either obvious or obscure) ?
TIA for any help or advice.
Useful details:
USB hub:
Anker 4 port USB 3, Ultra slim version
Model: Anker - AK-A7516012
PC details:
OS: Ubuntu 22.04 LTS
DE: KDE version 2.24.7
Kernel: 6.2.0-32-generic-(64-bit)
I was hoping that you could provide some insight into a strange issue that
I've been experiencing
I've only got x2 usable USB 3 ports on the back of my PC
They get used / used up, frequently and it prevents me from using other
high speed USB 3 devices in them.
I have very recently bought a 4 port, USB hub, USB 3 speed (Type-A USB connection).
To try and remedy the issue.
Problem:
The PC doesn't recognise devices when I put them into the new USB hub
(It's very intermittent - approx 1/8 or 1/10 times that a device will be recognized
and usable).
Troubleshooting:
1. Tried multiple different USB sticks (and powered external HDD),
in all x4 of the USB ports on the Anker hub = Same issue
(The devices do not show up on the host PC - but the Anker hub
does show up when using either the "lsusb" or "dmesg" CLI commands).
2. Tried both of the USB 3, ports on the PC with the Anker USB hub = Same issue
3. Tried using a USB 2 slot, the issue "appears" to go away and devices are
recognised on the Hub (I've only tried this a couple of times though).
4. Tried the Anker Hub on my Laptop (running Ubuntu 20.04 LTS) = Appears to have
worked - However, again I've only tried this twice on the Laptop.
So not an exhaustive test.
Questions:
1. What could be causing this behaviour ?
2. Have I bought a "lemon" ?
3. Am I missing anything (either obvious or obscure) ?
TIA for any help or advice.
Useful details:
USB hub:
Anker 4 port USB 3, Ultra slim version
Model: Anker - AK-A7516012
PC details:
OS: Ubuntu 22.04 LTS
DE: KDE version 2.24.7
Kernel: 6.2.0-32-generic-(64-bit)