Perhaps foolishly, I ignored the depreciated key warning for a while until the first Mint 21 kernel update popped up in Update Manager from 5.15.0-47 to 48. The kernel update has failed and I don't see a solution.
I have successfully fixed the apt-key issue following the instructions linked above, but the Update Manager new kernel still fails: Terminal text from failed update section:
Neofetch system screen shot: Any ideas how to recover?Errors were encountered while processing:
linux-image-generic
linux-generic
linux-modules-extra-5.15.0-48-generic
linux-modules-5.15.0-48-generic
E: Sub-process /usr/bin/dpkg returned an error code (1)
A package failed to install. Trying to recover:
dpkg: dependency problems prevent configuration of linux-image-generic:
linux-image-generic depends on linux-image-5.15.0-48-generic; however:
Package linux-image-5.15.0-48-generic is not installed.
dpkg: error processing package linux-image-generic (--configure):
dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of linux-generic:
linux-generic depends on linux-image-generic (= 5.15.0.48.48); however:
Package linux-image-generic is not configured yet.
dpkg: error processing package linux-generic (--configure):
dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of linux-modules-extra-5.15.0-48-generic:
linux-modules-extra-5.15.0-48-generic depends on linux-image-5.15.0-48-generic | linux-image-unsigned-5.15.0-48-generic; however:
Package linux-image-5.15.0-48-generic is not installed.
Package linux-image-unsigned-5.15.0-48-generic is not installed.
dpkg: error processing package linux-modules-extra-5.15.0-48-generic (--configure):
dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of linux-modules-5.15.0-48-generic:
linux-modules-5.15.0-48-generic depends on linux-image-5.15.0-48-generic | linux-image-unsigned-5.15.0-48-generic; however:
Package linux-image-5.15.0-48-generic is not installed.
Package linux-image-unsigned-5.15.0-48-generic is not installed.
dpkg: error processing package linux-modules-5.15.0-48-generic (--configure):
dependency problems - leaving unconfigured
Errors were encountered while processing:
linux-image-generic
linux-generic
linux-modules-extra-5.15.0-48-generic
linux-modules-5.15.0-48-generic