从 32 位内核切换到 64 位内核。如何安装 64 位软件包？

Question

我关注了回答并安装了 64 位版本的内核。 uname -m打印x86_64，所以它正常工作。

当尝试安装 64 位 Chrome 时，软件中心抱怨libcups:amd64。尝试手动安装，但我得到了

sudo apt-get install libcups2:amd64
.....
.....
The following packages have unmet dependencies:
kde-runtime : Depends: libsmbclient (>= 2:4.0.3+dfsg1) but it is not going to be installed
           Recommends: kubuntu-debug-installer but it is not going to be installed
libcups2:amd64 : Depends: libgssapi-krb5-2:amd64 (>= 1.10+dfsg~) but it is not going to be installed
E: Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages.

这难道不应该只适用于多架构吗？如果不行，如何安装 64 位软件包？