I downloaded Pencil from https://pencil.evolus.vn and installed the .deb file successfully but whenever I try to open the application nothing happens. it appears in the dock for a few moments but it won't open. is there something missing?!
I'm on ubuntu 18.4 (kernel version : 4.17)
Try running the program in question from the terminal. This often gives a better view of what might be going wrong when it is not starting. Especially if you installed a program via
dpkg
, which has no dependency tracking built in likeapt
, you can easily forget some package the application needs to work.Watch out for missing library packages in particular.
In this case the package depends on the libgconf-2-4 package, which you can install using the following command: