I have a a10 5800k (radeon 7660d) and I have a similar issue running 4.4 rc2. I think this is related to mesa 9.2.0
u can try the alternative iso from this post
. This iso was created using mesa 10.1.1.
No glitch problems on my hardware
https://groups.google.com/forum/m/#!topic/android-x86/84d-brSsUSc