Booting RPi4 from USB MSD by 5.10

Ryutaroh Matsumoto ryutaroh at
Thu Jan 28 22:47:26 EST 2021

Hi Nicolas,

I found that

>>> and almost 100% of CPU usage is consumed by udev, dbus and udisks2
>>> combined. I wonder if anyone other than me has experienced the same issue.
>>> Bug report was filed to Debian as

the above issue does not happen with

It seems that
* CONFIG_RESET_RASPBERRYPI=y and boot from USB make this symptom appear.
* CONFIG_RESET_RASPBERRYPI=m, loading "reset-raspberrypi.ko" by initramfs and
  boot from USB make this symptom disappear.

best regards, Ryutaroh

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