There has been lots of questions here on how to get Unity 3D working with NVidia graphics cards - I've read many of them, but I've still not been able to figure out a solution to my problem.
I recently installed Ubuntu 12.04 on my ASUS N53SN, which sports an NVidia GeForce 550M as well as an integrated Intel card (see the full spec on ASUS' website). Now I'm having some problems getting Unity 3D to work. I never bothered trying to fix it on Ubuntu 11.10, since I was planning an upgrade to 12.04 anyway and expected it to work then. It doesn't...
When I log into Ubuntu, I select "Ubuntu" as my desktop environment ("Ubuntu 2D" is also available). However, every diagnostic I tried says I'm using Unity 2D anyway.
unity --reset, which seems to have solved this problem for others, and got the following output (
unity --replace gives exactly the same, minus the first two lines):
WARNING: Unity currently default profile, so switching to metacity while resetting the values /home/tomas/.gtkrc-2.0:3: error: unexpected character `;', expected character `}' unity-panel-service: no process found Checking if settings need to be migrated ...no Checking if internal files need to be migrated ...no Backend : gconf Integration : true Profile : unity Adding plugins Initializing core options...done Initializing composite options...done Xlib: extension "GLX" missing on display ":0.0". Xlib: extension "GLX" missing on display ":0.0". Xlib: extension "GLX" missing on display ":0.0". Segmentation fault (core dumped)
Then I end up in a desktop environment with no window borders, no possibility to resize windows, and where Ctrl+Alt+t no longer works to open a terminal. Luckily, F12 still opens the Guake terminal, where I can confirm that I'm still in Unity 2D - only, apparently, broken.
What do I do to make Unity 3D working?