Can't get camera movement (Alt+mouse) to work (Ubuntnu Dapper/GNOME)

The title pretty much says it... no matter what I try, the camera remains unimpressed. (I'm using the Dapper Drake beta with updates installed.) I changed the movement key in Window Preferences (System/Preferences/Windows) to the Super key (the Windows logo key) so that the Alt+mouse combination wouldn't move the SL window... but it still doesn't move the camera. I also tried the various possible settings in the keyboard layout options (System/Preferences/Keyboard -- layout options tab); no joy.

I would be interested to know what this amazing alt-mouse camera movement is like.. I have never got it to work, and have never seen the need for anything other than the alt-ctrl mouse move camera panning.. I'm sure I'm missing something truly great, but for now I remain in blissful ignorance

Maybe it helps to use "Shift Alt" instead. I hear it fixes the issue on some Window Managers.

All this is just another symptom of LL's refusal to make the UI fully configurable. A trivial job, but either they're just too lazy, or else the lead designer's preferred UI is gospel and must be good enough for the rest of us.

In Linux the issue just gets exacerbated by the proliferation of different window managers, each of which grabs different modifier combinations which inevitably sometimes conflict with apps. Is this a problem? Of course not, in a world where app designers understand the need for full user UI configurability. Alas, SL isn't in that category.

It's yet another reason why the client needs to be open-sourced. Without that, we're at the mercy of whatever Cory thinks is appropriate ... but which of course won't be appropriate for anyone who isn't a Cory clone.