Questions[gtk](ubuntu)

I am running the awesome window manager on trusty after having upgraded from raring. My desktop environment intentionally does not have all the Gnome / Freedesktop daemons running — I don't want them.

When I execute gedit from a terminal like this:

gedit file

It outputs messages like this all over my terminal whenever I hit enter or save or on various other occasions:

(gedit:5700): Gtk-WARNING **: Calling Inhibit failed: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.gnome.SessionManager was not provided by any .service files

I understand the meaning of this warning and I have decided that it doesn't matter to me.

How can I turn off this kind of warning? By "turn off", I don't mean any of these or similar workarounds:

• piping the output of gedit into /dev/null
• writing a wrapper script that pipes the output of gedit into /dev/null
• creating an alias that pipes the output of gedit into /dev/null

These workarounds are not acceptable as they have to be applied individually to each Gnome application — gedit is not the only one that likes to mess up the terminal.

Gtk-Message: Failed to load module "canberra-gtk-module"

but I already have the libcanberra-gtk-module and libcanberra-gtk3-module installed. (i.e. I tried this solution, but it is already installed.)

This happens for instance, when I run ipython --pylab

I'm running Ubuntu 13.04 - raring.

I'm new to Ubuntu (and Linux in general). Sometimes when looking at programs in the Ubuntu Software Center, I see things about the programs being 'for the GTK+ environment', or 'for GNOME', or a whole lot of other things. All I know is that I've got Ubuntu 12.04 LTS, and what I'm seeing through my monitor appears to be the controversial Unity interface.

What are these other things I see mentioned in the descriptions of programs (such as KDE, GTK, QT, GNOME, GNOME 'shell', etc.)? Are they Linux GUIs that are alternatives to Unity? Are they dependencies that I need to have?

I've spent the last several months getting used to Ubuntu in its present form (though I confess, I have played around with Compiz, which is fun as hell). Will these other things completely turn my world upside down if I use them?

How can I install GTK+ 3.0 and use that instead of GTK+ 2.24?

I have a dark GTK theme installed in my Ubuntu 10.10 install and a persona installed for Firefox that I also like.

The problem is that Firefox is using my dark GTK theme for items like buttons and text fields on common web pages, and this commonly creates unreadable menus, text areas, and buttons. (white text on white backgrounds, or black text on black buttons).

I don't want to change either theme, because they look great in every other application, and I don't want to have to do something crazy to my Firefox install like use custom user scripts or CSS overrides.

All I want to do is tell Firefox to stop using my GTK theme completely. This appears to be what Google's Chrome browser does and it makes the most sense by far.

How can web developers possibly work around all the possible GTK themes out there?