Preface with “works under Windows 10!”
I have a Thunderbolt hub with HDMI and three USB 3.1 ports.
HDMI works fine.
USB 3 devices work fine.
USB 2 devices are not detected, not listed with lsusb.
Any ideas?
Solved: I was using a USB C extension cable. I flipped the connection between the extension cable and the hub. Problem went away.
Why is always about flipping the cable when it comes to USB? lol
Which authorization type are you using? Not all Thunderbolt hubs are well supported.
It’s weird that USB2 is not working but USB3, which USB2 devices are you talking about?
I’ve tried…
HDMI-out, works.
USB 3.1 Flash Drive, works.
USB 2 Flash Drive, doesn’t work.
USB 2 Dell Wireless Mouse & Keyboard adapter, doesn’t work.
USB 2 Dell Monitor Speak, doesn’t work.
All devices that do not work on the hub are fine in a standard USB (2 and 3) on the laptop.
Can you try with Kernel 5.10.
Coincidentally, right after I read your post and waking up from suspension, my Thunderbolt connection was also dead and only USB3 devices worked after a reboot.
Using the LTS kernel 5.10 fixes this (hopefully for now.)
Made the switch. No luck, but thanks.
Do you use bolt or tbtadm to authorize your device? Or does a hub not need that?
However, if it would need it, nothing (except maybe HDMI) would work.
No devices listed in bolt or in Plasma-thunderbolt, yet the device is powered and works for anything except USB 2…
Solved: I was using a USB C extension cable. I flipped the connection between the extension cable and the hub. Problem went away.
Why is always about flipping the cable when it comes to USB? lol
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