On a new installation of the x86_64 version of openSUSE 11.1 Beta4, on a Dell Latitude D620, KDE4 flashes black approximately every 9 seconds.  Checking /var/log/Xorg.0.log, the following lines repeat at the same time:

(II) intel(0): I2C bus "CRTDDC_A" initialized.
(II) intel(0): I2C device "CRTDDC_A:ddc2" registered at address 0xA0.
(II) intel(0): I2C device "CRTDDC_A:ddc2" removed.
(II) intel(0): I2C bus "CRTDDC_A" removed.
(II) intel(0): EDID vendor "DEL", prod id 40992
(II) intel(0): EDID vendor "AUO", prod id 4167
(II) intel(0): Printing DDC gathered Modelines:
(II) intel(0): Modeline "1440x900"x0.0   87.60  1440 1488 1520 1600  900 903 909
 912 -hsync -vsync (54.8 kHz)
(II) intel(0): EDID vendor "AUO", prod id 4167
(EE) intel(0): Unable to write to SDVOCTRL_E for SDVOB Slave 0x70.
(II) intel(0): EDID vendor "DEL", prod id 40993

This installation of Beta4 was performed with the laptop undocked. While undocked, this problem did not occur.

After docking the laptop (into a port replicator), and attaching an external monitor, keyboard and mouse, I reconfigured X using sax2. Now, the external monitor (Dell 2007FP) experiences this flash or flicker every 9 seconds.

The Dell 2007FP is set to use 1600x1200 as its resolution. The internal LCD of the laptop uses 1440x900 (as seen in the above messages). After seeing this, I opened the laptop and saw that the laptop screen is still enabled. With both screens open, I can see the external monitor experiences the flash, but the internal screen does not. I also thought that my internal screen was disabled in my xorg.conf, but that does not seem to turn the monitor off while docked.