Joe, I tried a 3 headed configuration with 3 ATI Xpert128 cards and needed XFree86 4.2 to get the cards to work. Even then they came up as one huge screen and when you have 3 screens that leaves a big hole. The ATI drivers for Linux don't seem to work very well. Jim Fitzmaurice jpfitz@fnal.gov UNIX is very user friendly, It's just very particular about who it makes friends with. Message: 3 Date: Mon, 8 Apr 2002 21:14:55 -0300 From: joe <joe@shinobi.mathstat.dal.ca> To: newbie@xfree86.org Subject: [Newbie]X 4.1 & Dual Head Reply-To: newbie@XFree86.Org Hi, I'm running Linux 2.4.18 (debian sid), and X 4.1. I'm attempting to setup Xinerama for dual head display, using 2 video cards: an AGP Matrox g400 and a PCI ATI Rage 128, monitors connected to them are a 19" sceptre and a 17" apple studio display, respectively. X sees both my video cards, and there is nothing in the X log file that would indicate a problem (that i can see, anyway). I read that part of the problem could be solved by using the UseFBDev Option for the ATI Rage device, so I added it, and when starting X with +xinerama, my main monitor goes blank, no signal to the 17". Without UseFBDev, X starts normally and still nothing appears on the 17" (no signal, nothing). Here's my configuration...I can send parts of the X log along too...any help would be greatly appreciated. Thanks. Section "ServerLayout" Identifier "XFree86 Configured" Screen "Screen 2" Screen "Screen 1" LeftOf "Screen 2" InputDevice "Mouse0" "CorePointer" InputDevice "Keyboard0" "CoreKeyboard" EndSection Section "Module" Load "dbe" Load "dri" Load "extmod" Load "glx" Load "pex5" Load "record" Load "xie" EndSection Section "Device" Identifier "Rage" Driver "r128" VideoRam 16384 BusID "PCI:0:12:0" Option "UseFBDev" Clocks 12.5 250 EndSection Section "Device" Identifier "Matrox" Driver "mga" VendorName "Matrox" BoardName "MGA G400 AGP" BusID "PCI:1:0:0" EndSection Section "Monitor" Identifier "Monitor1" VendorName "Apple" ModelName "Studio Display" HorizSync 30.0 - 60.0 VertRefresh 50.0 - 75.0 #don't know if this is correct. i #think it should be ok though. EndSection Section "Monitor" Identifier "Monitor0" Identifier "Monitor0" VendorName "SPT" ModelName "SCEPTRE D98A" HorizSync 31.0 - 95.0 VertRefresh 50.0 - 120.0 EndSection Section "Screen" Identifier "Screen 1" Device "Matrox" Monitor "Monitor0" DefaultDepth 16 SubSection "Display" Depth 16 Modes "1280x1024" EndSubSection EndSection Section "Screen" Identifier "Screen 2" Device "Rage" Monitor "Monitor1" DefaultDepth 16 SubSection "Display" Depth 16 Modes "1024x768" EndSubSection EndSection --__--__--