> I use scientific Linux 6.6 on Vmware. and recently get blank screen instead
> of the desktop
> after i provide the system my login password.

See if there's anything interesting in your $HOME/.xsession-errors file.

You'll probably need to get your VM into a console session with
ctrl-alt-f1 (or f2, or...). If you're running VMware on Linux, you'll
need to use a slightly different sequence to get the ctrl-alt-f1 all
the way through to the VM: hold down ctrl+alt, hit space, then hit f1.
Do not release the ctrl+alt throughout this sequence.

                                                         - Bluejay Adametz

The Golden Rule of friendship is to listen to others
as you would have them listen to you. - David Augsburge

-- 
NOTICE: This message, including any attachments, is only for the use of the 
intended recipient(s) and may contain confidential and privileged 
information, or information otherwise protected from disclosure by law.  If 
the reader of this message is not the intended recipient, you are hereby 
notified that any use, disclosure, copying, dissemination or distribution 
of this message or any of its attachments is strictly prohibited.  If you 
received this message in error, please contact the sender immediately by 
reply email and destroy this message, including all attachments, and any 
copies thereof.