I have the same problem and I had installed beryl/AIGLX (but I reverted my /etc/X11/xorg.conf to original setting since I thought beryl was a little unstable to my taste).
I have the same problem and I had installed beryl/AIGLX (but I reverted my /etc/X11/xorg.conf to original setting since I thought beryl was a little unstable to my taste).