Comment 15 for bug 1656790

We tried it according to the order recorded in #14, and post/attach the output. Please refer to the attachment for details.

After installing the missing package gir1.2-polkit-1.0 with [sudo apt-get install gir1.2-polkit-1.0] command and executing the [sudo dpkg -i python3...] command again, system-config-printer 1.5.9 can be successfully installed.

After executing these commands, we can start system-config-printer normally. However, the notifications is still displayed.