I'm seeing this error also, though as far as I can tell, it doesn't preclude the installation or upgrade of other packages I've installed or upgraded so far. On my system (an RPi4, 8GB, with Ubuntu 20.10 installed with Berryboot), /boot/firmware exists, but it's just a plain directory and not a mounted filesystem.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1914711 Title: package u-boot-rpi:arm64 2020.10+dfsg-1ubuntu0~20.10.1 failed to install/upgrade: installed u-boot-rpi:arm64 package post-installation script subprocess returned error exit status 1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/u-boot/+bug/1914711/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
