You can try the following utilities to see whether CPUs are occupied
before and after USB devices are plugged in
1. top - check whether any processes is running
2. watch -n1 cat /proc/interrupts - check whether any interrupts are generated
at abnormal rates
3. powertop - more details of power an
sorry I'm running KDE neon, and they don't let me install apport without
breaking neon-apport, which I'd prefer not do. But I can send any info
you wish
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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** Attachment added: "version.log"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1895378/+attachment/5410078/+files/version.log
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Title:
** Attachment added: "dmesg.log"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1895378/+attachment/5410079/+files/dmesg.log
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Title:
cp