Comment # 18 on bug 1187383 from Jimmie Mayfield

(In reply to Michal Suchanek from comment #17)

> Both should be updated to 15.3 now.
> 
> There was a change in the kmod() dependencies between 15.2 an 15.3 so the
> 15.2 kernel does not work for 15.3. It may work the other way around but
> there was a glibc update so the -devel packages probably won't work on 15.2

Kernel:/stable:Backport/standard updated to 5.12.11 yesterday it's not obvious
to me whether it's 15.2 or 15.3 (the package names still suggest 15.2).  In any
event, attempting to remove the 15.3 kernel-default-5.3.18 had the same effect
as before:

# zypper remove kernel-default-5.3.18
Reading installed packages...
Resolving package dependencies...

The following 5 packages are going to be REMOVED:
  kernel-default-5.3.18-59.5.2 kernel-default-5.12.11-lp152.2.1.g522e416
kernel-default-5.12.11-lp152.3.1.g6980d8f
  kernel-default-extra kernel-default-optional

5 packages to remove.


This has turned into a good test of zypper's sanity-checking.  With 3 kernels
installed, zypper's boot-time "purge old kernels" action tried to purge 5.3.18
(and all the other kernels).  Happily, zypper fails the operation citing
files-in-use.

It does, however, mean that a zypper config with multiversion.kernels set to,
say, "latest,latest-1,running" will probably never auto-purge any kernels since
the operation will fail.  Adding "oldest" to that list to preserve that 5.3.18
kernel will probably workaround...