unity fails to start

[Aaron Cleary]

When I initially installed Ubuntu on my system, it was fine. I simply had to startup and add the newest Nvidia drivers and have nvidia create my xorg.conf. Suddenly, after a few restarts, my system failed to boot into Unity. I get a warning telling me I am in low graphics mode and asking what I wish to do. If I startx from my shell, I still have a wallpaper, and can use my terminal command hotkey (though none others work). Utilizing this method, I can "unity --replace" which, after the second attempt, will spawn unity for me. However, the first attempt always throws this error:

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
compiz (core) - Warn: failed to receive ConfigureNotify event on 0x1c00004

Initializing composite options...done
Initializing opengl options...done
Initializing decor options...done
Initializing vpswitch options...done
Initializing snap options...done
Initializing mousepoll options...done
Initializing resize options...done
Initializing place options...done
Initializing move options...done
Initializing wall options...done
Initializing grid options...done
Initializing session options...done
Initializing gnomecompat options...done
Initializing animation options...done
Initializing fade options...done
Initializing unitymtgrabhandles options...done
Initializing workarounds options...done
Initializing scale options...done
compiz (expo) - Warn: failed to bind image to texture
Initializing expo options...done
Initializing ezoom options...done

(compiz:2211): GConf-CRITICAL **: gconf_client_add_dir: assertion `gconf_valid_key (dirname, NULL)' failed
Initializing unityshell options...done
compiz (core) - Warn: unhandled ConfigureNotify on 0xc0009e!
compiz (core) - Warn: this should never happen. you should probably file a bug about this.

(compiz:2211): GLib-GObject-CRITICAL **: g_object_unref: assertion `G_IS_OBJECT (object)' failed

Obviously I don't want to go through the process of replacing Unity everytime, but I don't wish to re-install again just yet. I may try fixing but a reinstall and reconfig of xorg.conf has got me no further ahead, so Im back to square one.

Thank you for Ubuntu,
Aaron Cleary

[Joeri Eilander (fazioliamboina-deactivatedaccount)]

do you have an optimus hybrid graphcis notebook? since optimus doesnt support linux.