Public bug reported: Each entry in the flash-kernel database specifies which kernel flavors are applicable for each machine type. Upstream (Debian) has separate flavors for it's 32-bit ('armmp' and 'armmp-lpae') and 64-bit ('arm64') ARM kernels, while Ubuntu uses the 'generic' (and 'generic-lpae') kernel flavors. This causes a failure during dpkg install, as flash-kernel is unable to find the correct kernel and errors out. There's also kernel flavors mentioned in the flash-kernel database that don't have an equivalent in Ubuntu (ex: mx5, exynos5, keystone).
As far as a concrete bug: flash-kernel on Ubuntu fails to install cleanly on BeagleBone Black with the 'generic' kernel flavor installed. A workaround is to add an override in /etc/flash-kernel/db that specifies the 'generic' kernel flavor as allowed: Machine: TI AM335x BeagleBone Machine: TI AM335x BeagleBone Black Kernel-Flavors: generic DTB-Id: am335x-boneblack.dtb Boot-Script-Path: /boot/boot.scr U-Boot-Script-Name: bootscr.beaglebone Required-Packages: u-boot-tools ** Affects: flash-kernel (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1917903 Title: Kernel flavors specified that aren't in Ubuntu To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/flash-kernel/+bug/1917903/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs