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USB port change suddenly

lk flag

I have a device that is connect to computer with USB1 port. Sometimes USB1 port suddenly changes to USB3 port. After i restart my computer it goes back to USB1 port again. Does anyone know why?

Bodo avatar
pt flag
Please [edit] your question and add more details. Show the `dmesg` output, log file contents or output / error messages related to the problem.
guiverc avatar
cn flag
Firmware settings (ie. box specific values) can influence the order in which ports are read.. which is why UUIDs are preferred over port name/numbers. Your question though is about hardware, and you've not yet mentioned how this relates to software or your Ubuntu 20.04 Server/Desktop install & this site.
ch flag
Check you applications which use this port. Sometimes application hangs device and system reinitializes it with another name. Study `dmesg` output as @Bodo recommended in comment.
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