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--- disable_nvidia_nouveau [01.12.2016 17:57] – Pascal Suter
+++ disable_nvidia_nouveau [13.06.2017 17:49] – [I want the opposite, Monitor on my onboard card, Nvidia card just for CUDA] Pascal Suter
@@ Line 63: / Line 63: @@
   ./NVIDIA-Linux-x86_64-375.20.run --no-opengl-files
 now your system will still use the standard xorg glx module and hence work with your onboard card.
+===== what to do when the unity launcher and window decorations are missing =====
+suppose you can start lightdm and login and all you get after that is an empty desktop background, chances are, that your xorg has now started allright but unity did not. you can right click and launch a terminal and it will have no window decoration and there will be no close button etc. if this is the case, then you need to try several different possible solutions, beause what you are seing can result from many different problems.
+i found a [[|good article on askubuntu]] that describes all these possible solutions. i have copied it here just in case:
+This bug depends on several factors, including Video card and custom config files. For example, some users have solved the issue by doing one or several of the following "solutions" (Not all work for everyone, some users even need a combination depending on how the session was configured and hardware used):
+==== Fix 1 - Compiz Problems (OpenGL module not loading, Unity plugin not loading) ====
+    sudo rm -fr ~/.cache/compizconfig-1
+    sudo rm -fr ~/.compiz
+==== Fix 2 - Session not loading (Guest session loads fine) ====
+    sudo rm -fr ~/.Xauthority
+    sudo rm -fr ~/.config/autostart
+==== Fix 3 - Session not loading (Guest not loading) ====
+  sudo apt-get install --reinstall ubuntu-desktop unity compizconfig-settings-manager upstart
+==== Fix 4 - Launcher / Top Panel not loading (Nvidia cards) ====
+  sudo add-apt-repository ppa:xorg-edgers/ppa -y
+  sudo apt-get update
+  sudo apt-get install nvidia-340
+  sudo reboot
+==== Fix 5 - Clearing Unity ====
+  dconf reset -f /org/compiz/
+  setsid unity
+==== Fix 6 - Clearing the Cache ====
+  sudo rm -fr .cache/*
+WARNING - This will clear the cache for all apps inside of the .cache folder.
+For most of these cases, if the session opens and you still can not see the top panel or the launcher, try opening a terminal ''CTRL''+''ALT''+''T'' and typing ''ccsm'' (Assuming you already installed the ''compizconfig-settings-manager'' package) then enable the OpenGL plugin and the Unity Plugin. If the driver is working well, this should enable both panels in a couple of seconds. There are even some cases where the Unity plugin in the compiz config settings manager is simply not enabled.