Ubuntu 14.04 Upgrade problems – System freezes at login after upgrade. UPDATE - JAN 2017 In my system, this may be also be a combination of problems-- "Kernel Panic" and the lack of a "Shadow Frame Buffer." Fixes described in my post on Jan 28 2017 solved a similar problem when it recurred. Here's a link; https://www.blogger.com/blogger.g?blogID=4962012626403702567#editor/target=post;postID=7770906987401668553;onPublishedMenu=allposts;onClosedMenu=allposts;postNum=4;src=postname Background: I have been running 32-bit Ubuntu 12.04 for several years. I was experiencing occasional system freezes and errors, so decided to upgrade to Ubuntu 14.04 32-bit to see if that would resolve the issues. The installation went smoothly, without apparent problems-- Until I went to log in. Reproducible Problem: I entered my password and hit [return]. The mouse pointer froze on the screen. I could not get to the Command Line Interface (CLI) in