Linux - HardwareThis forum is for Hardware issues.
Having trouble installing a piece of hardware? Want to know if that peripheral is compatible with Linux?
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It sounds like a bad usb port. My old laptop developed symptoms on par, but not an exact match to yours. But I ran it over a year after the fan completely stopped working. When it started corrupting filesystems connected to it's usb, I retired it.
You might check and see if your motherboard has a firmware update. Those have fixed a few "other" issues with things for me over the years.
xhci_hcd is new, and can be a pain with certain devices and kernel versions still in use. That does 2.x/3.x afaict. I find it very finicky.
ehci_hcd is 2.x only but stable. If you do not have usb-3.x devices, this may solve it.
ohci_hcd & uhci_hcd are usb-1.x modules and do not co exist peacefully. use one or the other, depending on your chipset.
May I suggest that you test the USB keyboard that you are using, on another working computer. It may be that the keyboard is drawing an excessively high current (ie. is faulty) and that you are tripping over current circuity associated with the USB ports.
I would suggest that you re-test your system with another known working keyboard, and if that doesn't work, then try installing a powered USB HUB between the keyboard and the USB ports that have presented the problem.
That would at least rule out inadequate current supply as a cause.