Thanks for the response. "Bug" was resolved by Bartosz, reference: https://bugs.launchpad.net/ubuntu/+source/simple-scan/+bug/1869524
now when I run $ which simple-scan the result is: /usr/bin/simple-scan as expected. When I run $ ldd -r /usr/bin/simple-scan the result is: linux-vdso.so.1 (0x00007ffe617db000) libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007febc9a62000) libglib-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 (0x00007febc974b000) libgtk-3.so.0 => /usr/lib/x86_64-linux-gnu/libgtk-3.so.0 (0x00007febc8e43000) libgdk-3.so.0 => /usr/lib/x86_64-linux-gnu/libgdk-3.so.0 (0x00007febc8b4d000) libcairo.so.2 => /usr/lib/x86_64-linux-gnu/libcairo.so.2 (0x00007febc8830000) libgdk_pixbuf-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libgdk_pixbuf-2.0.so.0 (0x00007febc860c000) libgio-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0 (0x00007febc826d000) libgobject-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0 (0x00007febc8019000) libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007febc7dfc000) libgusb.so.2 => /usr/lib/x86_64-linux-gnu/libgusb.so.2 (0x00007febc7bee000) libsane.so.1 => /usr/lib/x86_64-linux-gnu/libsane.so.1 (0x00007febc79bf000) libcolord.so.2 => /usr/lib/x86_64-linux-gnu/libcolord.so.2 (0x00007febc779f000) libpackagekit-glib2.so.18 => /usr/lib/x86_64-linux-gnu/libpackagekit-glib2.so.18 (0x00007febc7543000) libwebp.so.6 => /usr/lib/x86_64-linux-gnu/libwebp.so.6 (0x00007febc72da000) libwebpmux.so.3 => /usr/lib/x86_64-linux-gnu/libwebpmux.so.3 (0x00007febc70d0000) libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007febc6cdf000) /lib64/ld-linux-x86-64.so.2 (0x00007febca06b000) libpcre.so.3 => /lib/x86_64-linux-gnu/libpcre.so.3 (0x00007febc6a6d000) libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007febc684e000) libgmodule-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libgmodule-2.0.so.0 (0x00007febc664a000) libpangocairo-1.0.so.0 => /usr/lib/x86_64-linux-gnu/libpangocairo-1.0.so.0 (0x00007febc643d000) libX11.so.6 => /usr/lib/x86_64-linux-gnu/libX11.so.6 (0x00007febc6105000) libXi.so.6 => /usr/lib/x86_64-linux-gnu/libXi.so.6 (0x00007febc5ef5000) libXfixes.so.3 => /usr/lib/x86_64-linux-gnu/libXfixes.so.3 (0x00007febc5cef000) libcairo-gobject.so.2 => /usr/lib/x86_64-linux-gnu/libcairo-gobject.so.2 (0x00007febc5ae6000) libatk-1.0.so.0 => /usr/lib/x86_64-linux-gnu/libatk-1.0.so.0 (0x00007febc58c0000) libatk-bridge-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libatk-bridge-2.0.so.0 (0x00007febc568f000) libepoxy.so.0 => /usr/lib/x86_64-linux-gnu/libepoxy.so.0 (0x00007febc538e000) libpangoft2-1.0.so.0 => /usr/lib/x86_64-linux-gnu/libpangoft2-1.0.so.0 (0x00007febc5178000) libpango-1.0.so.0 => /usr/lib/x86_64-linux-gnu/libpango-1.0.so.0 (0x00007febc4f2b000) libfontconfig.so.1 => /usr/lib/x86_64-linux-gnu/libfontconfig.so.1 (0x00007febc4ce6000) libXinerama.so.1 => /usr/lib/x86_64-linux-gnu/libXinerama.so.1 (0x00007febc4ae3000) libXrandr.so.2 => /usr/lib/x86_64-linux-gnu/libXrandr.so.2 (0x00007febc48d8000) libXcursor.so.1 => /usr/lib/x86_64-linux-gnu/libXcursor.so.1 (0x00007febc46ce000) libXcomposite.so.1 => /usr/lib/x86_64-linux-gnu/libXcomposite.so.1 (0x00007febc44cb000) libXdamage.so.1 => /usr/lib/x86_64-linux-gnu/libXdamage.so.1 (0x00007febc42c8000) libxkbcommon.so.0 => /usr/lib/x86_64-linux-gnu/libxkbcommon.so.0 (0x00007febc4089000) libwayland-cursor.so.0 => /usr/lib/x86_64-linux-gnu/libwayland-cursor.so.0 (0x00007febc3e81000) libwayland-egl.so.1 => /usr/lib/x86_64-linux-gnu/libwayland-egl.so.1 (0x00007febc3c7f000) libwayland-client.so.0 => /usr/lib/x86_64-linux-gnu/libwayland-client.so.0 (0x00007febc3a70000) libXext.so.6 => /usr/lib/x86_64-linux-gnu/libXext.so.6 (0x00007febc385e000) librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007febc3656000) libpixman-1.so.0 => /usr/lib/x86_64-linux-gnu/libpixman-1.so.0 (0x00007febc33b1000) libfreetype.so.6 => /usr/lib/x86_64-linux-gnu/libfreetype.so.6 (0x00007febc30fd000) libpng16.so.16 => /usr/lib/x86_64-linux-gnu/libpng16.so.16 (0x00007febc2ecb000) libxcb-shm.so.0 => /usr/lib/x86_64-linux-gnu/libxcb-shm.so.0 (0x00007febc2cc8000) libxcb.so.1 => /usr/lib/x86_64-linux-gnu/libxcb.so.1 (0x00007febc2aa0000) libxcb-render.so.0 => /usr/lib/x86_64-linux-gnu/libxcb-render.so.0 (0x00007febc2893000) libXrender.so.1 => /usr/lib/x86_64-linux-gnu/libXrender.so.1 (0x00007febc2689000) libselinux.so.1 => /lib/x86_64-linux-gnu/libselinux.so.1 (0x00007febc2461000) libresolv.so.2 => /lib/x86_64-linux-gnu/libresolv.so.2 (0x00007febc2246000) libmount.so.1 => /lib/x86_64-linux-gnu/libmount.so.1 (0x00007febc1ff2000) libffi.so.6 => /usr/lib/x86_64-linux-gnu/libffi.so.6 (0x00007febc1dea000) libusb-1.0.so.0 => /lib/x86_64-linux-gnu/libusb-1.0.so.0 (0x00007febc1bd2000) libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007febc19ce000) libieee1284.so.3 => /usr/lib/x86_64-linux-gnu/libieee1284.so.3 (0x00007febc17c2000) libcolordprivate.so.2 => /usr/lib/x86_64-linux-gnu/libcolordprivate.so.2 (0x00007febc1593000) libdbus-1.so.3 => /lib/x86_64-linux-gnu/libdbus-1.so.3 (0x00007febc1346000) libatspi.so.0 => /usr/lib/x86_64-linux-gnu/libatspi.so.0 (0x00007febc1116000) libharfbuzz.so.0 => /usr/lib/x86_64-linux-gnu/libharfbuzz.so.0 (0x00007febc0e78000) libthai.so.0 => /usr/lib/x86_64-linux-gnu/libthai.so.0 (0x00007febc0c6f000) libexpat.so.1 => /lib/x86_64-linux-gnu/libexpat.so.1 (0x00007febc0a3d000) libXau.so.6 => /usr/lib/x86_64-linux-gnu/libXau.so.6 (0x00007febc0839000) libXdmcp.so.6 => /usr/lib/x86_64-linux-gnu/libXdmcp.so.6 (0x00007febc0633000) libblkid.so.1 => /lib/x86_64-linux-gnu/libblkid.so.1 (0x00007febc03e6000) libudev.so.1 => /lib/x86_64-linux-gnu/libudev.so.1 (0x00007febc01c8000) liblcms2.so.2 => /usr/lib/x86_64-linux-gnu/liblcms2.so.2 (0x00007febbff70000) libsystemd.so.0 => /lib/x86_64-linux-gnu/libsystemd.so.0 (0x00007febbfcec000) libgraphite2.so.3 => /usr/lib/x86_64-linux-gnu/libgraphite2.so.3 (0x00007febbfabf000) libdatrie.so.1 => /usr/lib/x86_64-linux-gnu/libdatrie.so.1 (0x00007febbf8b8000) libbsd.so.0 => /lib/x86_64-linux-gnu/libbsd.so.0 (0x00007febbf6a3000) libuuid.so.1 => /lib/x86_64-linux-gnu/libuuid.so.1 (0x00007febbf49c000) liblzma.so.5 => /lib/x86_64-linux-gnu/liblzma.so.5 (0x00007febbf276000) liblz4.so.1 => /usr/lib/x86_64-linux-gnu/liblz4.so.1 (0x00007febbf05a000) libgcrypt.so.20 => /lib/x86_64-linux-gnu/libgcrypt.so.20 (0x00007febbed3e000) libgpg-error.so.0 => /lib/x86_64-linux-gnu/libgpg-error.so.0 (0x00007febbeb29000) and when I run $ ls -r /usr/local the output is: src share-back sbin man lib include games etc bin Probably not much help since the bug/issue was resolved. It's quite possible that way back when I downloaded an executable of simple-scan (from not sure where) and didn't properly install via apt- get or the Software store. What I can say for sure is I didn't compile a custom version of simple- scan. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to simple-scan in Ubuntu. https://bugs.launchpad.net/bugs/1869522 Title: Simple Scan doesn't work Status in simple-scan package in Ubuntu: Incomplete Bug description: The latest version of Simple Scan released for Ubuntu 18.04 LTS does not work. Version 3.28.0-0ubuntu1 is installed. When I click to launch it nothing happens. I initially reported the bug against Simple Scan, but they said it was a problem with the Ubuntu 18.04 LTS distribution. https://gitlab.gnome.org/GNOME/simple-scan/-/issues/159 ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: gnome-software 3.28.1-0ubuntu4.18.04.14 ProcVersionSignature: Ubuntu 4.15.0-91.92-generic 4.15.18 Uname: Linux 4.15.0-91-generic x86_64 NonfreeKernelModules: nvidia_modeset nvidia ApportVersion: 2.20.9-0ubuntu7.12 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Sat Mar 28 15:29:05 2020 ExecutablePath: /usr/bin/gnome-software InstallationDate: Installed on 2014-08-08 (2059 days ago) InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2) InstalledPlugins: gnome-software-plugin-flatpak N/A gnome-software-plugin-limba N/A gnome-software-plugin-snap 3.28.1-0ubuntu4.18.04.14 ProcEnviron: XDG_RUNTIME_DIR=<set> SHELL=/bin/bash PATH=(custom, no user) LANG=en_US.UTF-8 SourcePackage: gnome-software UpgradeStatus: Upgraded to bionic on 2020-01-05 (82 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/simple-scan/+bug/1869522/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp