For me I would still prefer using "dtoverlay=dwc2,dr_mode=peripheral" as it is more reliable at the moment: if pi4 is rebooted remotely, it will come up with the necessary interface as I added g_cdc to /etc/modprobe.d/modules.
On my setup it should not be power related, as I'm using a cable that should provide <=0.9A from PC's USB-A and <=2.1A from an external PSU = 2.5~3A in total. Based on my test before out of curiosity, my pi4 uses ~0.6A when idle, and up to 1.5A during CPU stress test. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1861070 Title: Raspberry Pi 4B: USB OTG is not working To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-raspi2/+bug/1861070/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
