I was experiencing the same flickering with my dual-monitor setup in KDE4. I disabled the TV and TMDS-1 output (I got the names from xrandr, which was showing them as additional outputs to LVDS and VGA), by changing my /etc/X11/xorg.conf file with the following options:
I was experiencing the same flickering with my dual-monitor setup in KDE4. I disabled the TV and TMDS-1 output (I got the names from xrandr, which was showing them as additional outputs to LVDS and VGA), by changing my /etc/X11/xorg.conf file with the following options:
Section "Device"
Identifier "Configured Video Device"
Driver "intel"
Option "monitor-TMDS-1" "dvi"
Option "monitor-TV" "tv"
Option "monitor-VGA" "vga"
Option "monitor-LVDS" "lvds"
EndSection
Section "Monitor"
Identifier "dvi"
Option "Ignore" "true"
EndSection
Section "Monitor"
Identifier "tv"
Option "Ignore" "true"
EndSection