On Apr 11, 2012, at 11:29 PM, allan wrote: > Is your monitor an LED type? It could have dynamic brightness. My tv does the same thing - also annoying. I have also seen that "feature" on an HP monitor with LED backlight. I believe it was a feature one could turn off in the monitor's built-in OSD menu. Nate _______________________________________________ CentOS mailing list CentOS@xxxxxxxxxx http://lists.centos.org/mailman/listinfo/centos