For the old card sis/savage/via/others you have to: 1) X -configure with old X (like 1.4.x) to probe all vga cards 2) X -configure with your X with Option "NoInt10" "yes" enabled only to the old cards like sis/savage/etc Xorg 1.7.x+ has bug with systemcall Int10, an a lot of SiS and VIA old cards need to use Int10. nvidia, radeon, ati, nv and nouveau drivers doesnt need this option and often ignore this option. other solutions: maybe vbetool or posttool (vga arbiter) can help to probe vga devices, but for me they dont work fine. <div class="gmail_quote">On Sat, Oct 2, 2010 at 12:35 AM, Jeff <<a href="mailto:wd4nmq@comcast.net">wd4nmq@comcast.net</a>> wrote: <blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"> I am trying an experiment and getting dual monitors working on a system using two video cards. the video cards are the onboard S3 Savage and a S3 Virge PCI card. lspci yields: 00:05.0 VGA compatible controller: S3 Inc. 86c325 [ViRGE] (rev 06) 01:00.0 VGA compatible controller: S3 Inc. VT8375 [ProSavage8 KM266/KL266] Trying the easy route I run Xorg -configure which I check and all seems ok, but when I try Xorg -config /root/xorg.conf.new screen 0 goes blank with a "-" in the upper left hand corner, and then nothing. I cannot even get another terminal screen using cntrl-alt-1, etc. I have to ssh into the system to reboot. Now, if I comment out Screen 1 in the Screen Layout scetion X runs fine on Screen 0. Here is the xorg.conf that works. Section "ServerLayout" Identifier "X.org Configured" Screen 0 "Screen0" 0 0 # Screen 1 "Screen1" RightOf "Screen0" InputDevice "Mouse0" "CorePointer" InputDevice "Keyboard0" "CoreKeyboard" EndSection Section "Files" ModulePath "/usr/lib/xorg/modules" FontPath "/usr/share/fonts/local" FontPath "/usr/share/fonts/TTF" FontPath "/usr/share/fonts/OTF" FontPath "/usr/share/fonts/Type1" FontPath "/usr/share/fonts/misc" FontPath "/usr/share/fonts/CID" FontPath "/usr/share/fonts/75dpi/:unscaled" FontPath "/usr/share/fonts/100dpi/:unscaled" FontPath "/usr/share/fonts/75dpi" FontPath "/usr/share/fonts/100dpi" FontPath "/usr/share/fonts/cyrillic" EndSection Section "Module" Load "dri2" Load "dbe" Load "dri" Load "glx" Load "extmod" EndSection Section "InputDevice" Identifier "Keyboard0" Driver "kbd" EndSection Section "InputDevice" Identifier "Mouse0" Driver "mouse" Option "Protocol" "auto" Option "Device" "/dev/input/mice" Option "ZAxisMapping" "4 5 6 7" EndSection Section "Monitor" #DisplaySize 340 270 # mm Identifier "Monitor0" VendorName "VSC" ModelName "Q7-3 Series" HorizSync 30.0 - 80.0 VertRefresh 55.0 - 75.0 Option "DPMS" EndSection Section "Monitor" Identifier "Monitor1" VendorName "Monitor Vendor" ModelName "Monitor Model" EndSection Section "Device" ### Available Driver options are:- ### Values: : integer, <f>: float, <bool>: "True"/"False", ### <string>: "String", <freq>: "<f> Hz/kHz/MHz" ### [arg]: arg optional #Option "NoAccel" # [<bool>] #Option "AccelMethod" # <str> #Option "HWCursor" # [<bool>] #Option "SWCursor" # [<bool>] #Option "ShadowFB" # [<bool>] #Option "Rotate" # [<str>] #Option "UseBIOS" # [<bool>] #Option "LCDClock" # <freq> #Option "ShadowStatus" # [<bool>] #Option "CrtOnly" # [<bool>] #Option "TvOn" # [<bool>] #Option "PAL" # [<bool>] #Option "ForceInit" # [<bool>] #Option "Overlay" # [<str>] #Option "TransparencyKey" # [<str>] #Option "ForceInit" # [<bool>] #Option "DisableXVMC" # [<bool>] #Option "DisableTile" # [<bool>] #Option "DisableCOB" # [<bool>] #Option "BCIforXv" # [<bool>] #Option "DVI" # [<bool>] #Option "IgnoreEDID" # [<bool>] #Option "BusType" # [<str>] #Option "DmaType" # [<str>] #Option "DmaMode" # [<str>] #Option "AGPMode" # #Option "AGPSize" # #Option "DRI" # [<bool>] #Option "AGPforXv" # [<bool>] Identifier "Card0" Driver "savage" VendorName "Unknown Vendor" BoardName "Unknown Board" BusID "PCI:1:0:0" EndSection Section "Device" ### Available Driver options are:- ### Values: : integer, <f>: float, <bool>: "True"/"False", ### <string>: "String", <freq>: "<f> Hz/kHz/MHz" ### [arg]: arg optional #Option "slow_edodram" # [<bool>] #Option "slow_dram" # [<bool>] #Option "fast_dram" # [<bool>] #Option "fpm_vram" # [<bool>] #Option "pci_burst" # [<bool>] #Option "fifo_conservative" # [<bool>] #Option "fifo_moderate" # [<bool>] #Option "fifo_aggressive" # [<bool>] #Option "pci_retry" # [<bool>] #Option "NoAccel" # [<bool>] #Option "early_ras_precharge" # [<bool>] #Option "late_ras_precharge" # [<bool>] #Option "lcd_center" # [<bool>] #Option "set_lcdclk" # #Option "set_mclk" # <freq> #Option "set_refclk" # <freq> #Option "show_cache" # [<bool>] #Option "HWCursor" # [<bool>] #Option "SWCursor" # [<bool>] #Option "ShadowFB" # [<bool>] #Option "Rotate" # [<str>] #Option "mxcr3afix" # [<bool>] #Option "XVideo" # [<bool>] Identifier "Card1" Driver "s3virge" VendorName "Unknown Vendor" BoardName "Unknown Board" BusID "PCI:0:5:0" EndSection Section "Screen" Identifier "Screen0" Device "Card0" Monitor "Monitor0" SubSection "Display" Viewport 0 0 Depth 1 EndSubSection SubSection "Display" Viewport 0 0 Depth 4 EndSubSection SubSection "Display" Viewport 0 0 Depth 8 EndSubSection SubSection "Display" Viewport 0 0 Depth 15 EndSubSection SubSection "Display" Viewport 0 0 Depth 16 EndSubSection SubSection "Display" Viewport 0 0 Depth 24 EndSubSection EndSection Section "Screen" Identifier "Screen1" Device "Card1" Monitor "Monitor1" SubSection "Display" Viewport 0 0 Depth 1 EndSubSection SubSection "Display" Viewport 0 0 Depth 4 EndSubSection SubSection "Display" Viewport 0 0 Depth 8 EndSubSection SubSection "Display" Viewport 0 0 Depth 15 EndSubSection SubSection "Display" Viewport 0 0 Depth 16 EndSubSection SubSection "Display" Viewport 0 0 Depth 24 EndSubSection EndSection Now, there is are a couple of warnings in the log file, but these are there no matter if screen 1 is enabled or not, i.e. screen 0 only and X running properly (WW) AllowEmptyInput is on, devices using drivers 'kbd', 'mouse' or 'vmmouse' will be disabled. (WW) Disabling Mouse0 (WW) Disabling Keyboard0 Any help? tj _______________________________________________ <a href="mailto:xorg@lists.freedesktop.org" target="_blank">xorg@lists.freedesktop.org</a>: X.Org support Archives: <a href="http://lists.freedesktop.org/archives/xorg" target="_blank">http://lists.freedesktop.org/archives/xorg</a> Info: <a href="http://lists.freedesktop.org/mailman/listinfo/xorg" target="_blank">http://lists.freedesktop.org/mailman/listinfo/xorg</a> Your subscription address: <a href="mailto:apterixbr@gmail.com" target="_blank">apterixbr@gmail.com</a> </blockquote></div>