I have the same problem. I'm running xserver-xorg on testing (version 6.8.2.dfsg.1-7) with the sis driver. The symptoms are mostly the same, only my screen does not blank completely. I had posted a message on debian user
http://lists.debian.org/debian-user/2005/11/msg02859.html explaining in detail what happens on my box, but in short I guess it's the same bug. I can reproduce the bug regularly through this sequence: 1) start a plain X session (xterm) 2) run xscreensaver -> flickering 3) kill xscreensaver -> stop flickering. Riccardo `Jack' Lucchetti Dipartimento di Economia Università Politecnica delle Marche [EMAIL PROTECTED] http://www.econ.univpm.it/lucchetti