Perhaps the issue will not be solved, but I got during examination something like a "spring clean" of my system (Bios update, DKMS driver for r8152 installed, replaced thunderbird snap by apt).
Ubuntu MATE comes with a pre-installed tlp package for laptop battery power management.
Check your /etc/tlp.conf config file and follow the troubleshooting guide:
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Common information did not help ! Only the SW developer who did, turn Off USB, can help !
No, this is not just 'common information'. This is a detailed instruction, nicely written. Your hardware may not work properly with the default tlp settings. You can edit your /etc/tlp.conf config file and change some settings.
Have you tried anything? Settings like USB_AUTOSUSPEND look promising. Without actions on your part, nothing will happen, because you are the one with the hardware.
The development repository is here:
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