I have been trying to install manually Adobe Reader 9 mutiple times on Ubuntu 20.04.4, but the app does not start. When I type in a terminal
acroread some_file.pdf
I get the following output but nothing more. No errors, no warnings, and under ps -ef there is no job named acroread.
How can I try to fix this problem?
Here is the complete but meaningless output:
(acroread:17581): Gtk-WARNING **: 11:35:23.691: Unable to locate theme engine in module_path: "adwaita",
(acroread:17581): Gtk-WARNING **: 11:35:23.691: Unable to locate theme engine in module_path: "pixmap",
(acroread:17581): Gtk-WARNING **: 11:35:23.692: Unable to locate theme engine in module_path: "pixmap",
(acroread:17581): Gtk-WARNING **: 11:35:23.692: Unable to locate theme engine in module_path: "pixmap",
(acroread:17581): Gtk-WARNING **: 11:35:23.693: Unable to locate theme engine in module_path: "pixmap",
(acroread:17581): Gtk-WARNING **: 11:35:23.693: Unable to locate theme engine in module_path: "pixmap",
(acroread:17581): Gtk-WARNING **: 11:35:23.693: Unable to locate theme engine in module_path: "pixmap",
(acroread:17581): Gtk-WARNING **: 11:35:23.693: Unable to locate theme engine in module_path: "pixmap",
(acroread:17581): Gtk-WARNING **: 11:35:23.693: Unable to locate theme engine in module_path: "pixmap",
(acroread:17581): Gtk-WARNING **: 11:35:23.693: Unable to locate theme engine in module_path: "pixmap",
(acroread:17581): Gtk-WARNING **: 11:35:23.693: Unable to locate theme engine in module_path: "pixmap",
(acroread:17581): Gtk-WARNING **: 11:35:23.693: Unable to locate theme engine in module_path: "pixmap",
(acroread:17581): Gtk-WARNING **: 11:35:23.693: Unable to locate theme engine in module_path: "pixmap",
(acroread:17581): Gtk-WARNING **: 11:35:23.694: Unable to locate theme engine in module_path: "pixmap",
(acroread:17581): Gtk-WARNING **: 11:35:23.694: Unable to locate theme engine in module_path: "pixmap",
(acroread:17581): Gtk-WARNING **: 11:35:23.694: Unable to locate theme engine in module_path: "pixmap",
(acroread:17581): Gtk-WARNING **: 11:35:23.694: Unable to locate theme engine in module_path: "pixmap",
(acroread:17581): Gtk-WARNING **: 11:35:23.694: Unable to locate theme engine in module_path: "pixmap",
(acroread:17581): Gtk-WARNING **: 11:35:23.694: Unable to locate theme engine in module_path: "pixmap",
(acroread:17581): Gtk-WARNING **: 11:35:23.694: Unable to locate theme engine in module_path: "pixmap",
(acroread:17581): Gtk-WARNING **: 11:35:23.694: Unable to locate theme engine in module_path: "pixmap",
(acroread:17581): Gtk-WARNING **: 11:35:23.695: Unable to locate theme engine in module_path: "adwaita",
I tried to install
sudo apt install gtk2-engines-pixbuf
but it seems it was already installed, and did not change anything.
