I have not had this problem but the last two Radeon-fglrx installations have been problematic.   Most times reboots would result in X failing and the system dropping to runlevel 3.  When it succeeded, windows would ghost when dragged across the desktop.

I have decided to give up on radeon/fglrx.  I fixed one of them with an nvidia 710 and I just ordered another one to fix the other.


On 03/31/2016 01:18 PM, Stephen Isard wrote:
> I have a Dell Optiplex 980 with a Radeon HD 6450 card which was working fine with the elrepo fglrx-x11-drv and kmod-fglrx packages until I recently upgraded to kernel 2.6.32-573.12.1.el6.x86_64 and fglrx versions 15.12-1.  Now when I move a window on the screen, the content isn't erased from the old location, leaving a trail of ghosts behind.
> This happens with more than one window manager (fvwm, icewm, fluxbox), so I think its an X problem, rather than a window manager bug.
>
> The guys at elrepo were very responsive, but they didn't have the problem on their own machines, and it's not really their software - it is closed source from ATI - and they have run out of guesses for what to try.  I have tried installing ATI's own rpm and that behaves the same way.  I've filed a bug on the unofficial ATI bugzilla, but don't have great hopes there.  I'm wondering whether anyone here has ever seen symptoms like these.  Using the radeon driver gets me a mostly usable system, but there is some stuff that says it won't work without glx.
>
> Stephen Isard