I tried installing Chromium from the Software GUI. Nothing happened and top showed no chromium process running. I tried launching chromium-browser from the CL and got a Gtk Message error: Failed to load module "canberra-gtk-module"
I found this answer and ran
sudo apt install libcanberra-gtk-module libcanberra-gtk3-module
This did not solve the problem, and now the error message was (and remains):
Gtk-Message: Failed to load module "canberra-gtk-module"
Gtk-Message: Failed to load module "canberra-gtk-module"
Trace/breakpoint trap (core dumped)
and
[ERROR:sandbox_linux.cc(384)] InitializeSandbox() called with multiple threads in process gpu-process.
The latter error sometimes occurs before Trace/breakpoint trap (core dumped) and sometimes after. It doesn't give me back my command prompt but puts me on an unadorned new line (no > or other sign of being inside a program). I have no idea what's going on, so I type ^C to escape.
So I uninstalled Chromium with the Software GUI (which uses snap). I tried installing with apt, got the same error, and uninstalled. Because I learned that apt just calls for a snap install, I used snap install chromium and have installed, removed it, restarted and reinstalled.
I revisited the answer linked above and ran
sudo apt-get install libcanberra-gtk-module:i386
which installed nine 32-bit packages. It did not solve the problem.
I'm out of ideas. I am still pretty new to Ubuntu.
