Am So, den 30.11.2003 schrieb sub1.shrike.lists.redhat@xxxxxxxxxxxxxx um 06:28: > Based on the symptoms, it seems that the secondary monitor is not being > correctly initialised when dual-head is turned on. I figure this since > switching to single-monitor turns on the secondary monitor and switching > back to dual-head doesn't turn it back off. Comments, anyone? Similar > problems or experiences? How did you create the config file? Did you check the /etc/X11/XF86Config file? According tp your description there may be a missing "Screen 0" and "Screen 1" line in the "Device" Sections. For Matrox these Sections should read: Section "Device" Identifier "Videocard0" Driver "mga" VendorName "Matrox" BoardName "Millenium G550" BusID "PCI:1:0:0" Screen 0 EndSection Section "Device" Identifier "Videocard1" Driver "mga" VendorName "Matrox" BoardName "Millenium G550" BusID "PCI:1:0:0" Screen 1 EndSection In the 2 Screen section there have to be references to these devices each. Section "Screen" Identifier "Screen0" Device "Videocard0" Monitor "Monitor0" // your first / left Monitor Identifier DefaultDepth ...... ....... EndSection Section "Screen" Identifier "Screen1" Device "Videocard1" Monitor "Monitor1" // your second / right Monitor Identifier DefaultDepth ...... ....... EndSection It's a good idea to have the first Monitor to be the left one that is connected to the "main" connector of the adapter. Peter -- Shrike-list mailing list Shrike-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/shrike-list