emacs doesn't show letters in RHEL6.6

[peter . lingsberg]

I'm using RHEL6.6 but emacs is behaving very strange. Letters disappear 
(doesn't show) while I write or scroll. I have to do Ctrl-L to refresh to see 
the letters. Extremely annoying and I can hardly use emacs anymore. Version on 
emacs is 1:23.1-25.el6. I downloaded a newer emacs and compiled it, but the 
problem persists. Could it have something to do with X or gdm?

I have been running RHEL6.4 for a couple of years and had no problem with emacs 
there.

Snapshot of how it looks when I write or just move around with the cursor. Note 
that all spaces actually have chars:

http://ladda-upp.se/files/2016/b177214.jpg

If I then reload page with Ctrl-L, the window looks like this. The characters 
are suddenly visible. 

http://ladda-upp.se/files/2016/b177216.jpg

But as soon as I start write or move cursor, the characters will be invisible 
again.

emacs -q, emacs -Q or changing fonts won't help. What to do??? I love emacs but 
I can't use it when it behaves like this...

I run RHEL6.6 out-of-the-box as a virtual machine in VMware. It is exactly the 
same environment as I had in RHEL6.4 and there were no problems with emacs there