From log:
Installing new version of config file /etc/kernel/postinst.d/zz-shim ...
update-alternatives: error: alternative link /usr/lib/shim/shimaa64.efi.signed is already managed by shimx64.efi.signed
dpkg: error processing package shim-signed (--configure):
shim-signed 1.54 seems to cause autopkgtest regressions in lunar on arm64.
https:/ /people. canonical. com/~ubuntu- archive/ proposed- migration/ update_ excuses. html#shim- signed
From log: postinst. d/zz-shim ... alternatives: error: alternative link /usr/lib/ shim/shimaa64. efi.signed is already managed by shimx64.efi.signed
Installing new version of config file /etc/kernel/
update-
dpkg: error processing package shim-signed (--configure):