Folks....I am configuring a new Pi2 unit. I have started from the NOOBS SD card, installed RASPBIAN and added Samba. All seems to be working.
Then (!!!) from the console (keyboard and monitor) I tried to launch "startx". The "startx" GUI opens up partially on the monitor, that is the trash can shows and then screen jumps up and down in 1/2" (or so) increments. Right clicking with the mouse does bring up some context menus, but the normal icons for file manager, etc are NOT shown. The only way I have found to get back to the keyboard session is "cntl-Alt-delete" which brings up the "task manager" from which I can then "terminate" the "xorg" task.
When I do terminate it, the console session shows lines for shutting down "startx" with a fatal error associated with G2D_23 not being found.
I have run the apt-get update and apt-get upgrade, so the system should be fully up-to-date.
Any ideas or fixes?.....RDK