Hi,
i don't know why you were doing the kernel/vga driver update, but if 
there wasn't a particular bug you were fixing, i would downgrade the 
kernel/driver/X server back to previous, working versions..

-- 
*Karel Lang*
*Unix/Linux Administration*
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AUFEER DESIGN, s.r.o. | www.aufeerdesign.cz


On 03/31/2016 08:18 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
>