Xinerama issues

[Allblack]

I am trying to get my second videocard configured so that I can have dual displays. I have followed the how-to on tldp. With my current setup the second monitor displays a no signal message.

I have ran X -configure and copied the xf86config.new file to xf86config.
When I start X again with "startx -- +xinerama" I get back into X. My settings on the first monitor are slightly altered (smaller resolution and less colours). Judging by the xf86config file this appears to be normal.

My second monitor is just black now. It is getting a signal but no picture appears.
I can drag my cursor onto the second screen, although it dissappears and is thus not visible. With my old set up it gets blocked from dissappearing from my main screen.

I am not sure what is going on so I will post my xf86config file here. I am surprised that X -configure does not pick up the video ram. At one stage I got the following error
when issuing X -xf86config /root/XF86Config.new

mga(1) static buffer allocation failed, not initializing the DRI
mga(1) need at least 5906kb video memory to run this resolution, bit depth

I am sure my matrox card has more that that

Thanks

Section "ServerLayout"
Identifier "XFree86 Configured"
Screen 0 "Screen0" 0 0
Screen 1 "Screen1" RightOf "Screen0"
InputDevice "Mouse0" "CorePointer" VideoRam 8192
InputDevice "Keyboard0" "CoreKeyboard"
EndSection

Section "Files"
RgbPath "/usr/X11R6/lib/X11/rgb"
ModulePath "/usr/X11R6/lib/modules"
FontPath "/usr/X11R6/lib/X11/fonts/misc/"
FontPath "/usr/X11R6/lib/X11/fonts/Speedo/"
FontPath "/usr/X11R6/lib/X11/fonts/Type1/"
FontPath "/usr/X11R6/lib/X11/fonts/CID/"
FontPath "/usr/X11R6/lib/X11/fonts/75dpi/"
FontPath "/usr/X11R6/lib/X11/fonts/100dpi/"
EndSection

Section "Module"
Load "dbe"
Load "dri"
Load "extmod"
Load "glx"
Load "record"
Load "xtrap"
Load "speedo"
Load "type1"
EndSection

Section "InputDevice"
Identifier "Keyboard0"
Driver "keyboard"
EndSection

Section "InputDevice"
Identifier "Mouse0"
Driver "mouse"
Option "Protocol" "auto"
Option "Device" "/dev/mouse"
EndSection

Section "Monitor"
#DisplaySize 320 240 # mm
Identifier "Monitor0"
VendorName "VSC"
ModelName "E70-3"
Option "DPMS"
EndSection

Section "Monitor"
#DisplaySize 320 240 # mm
Identifier "Monitor1"
VendorName "VSC"
ModelName "E70-3"
Option "DPMS"
EndSection

Section "Device"
### Available Driver options are:-
### Values: [i]: integer, <f>: float, <bool>: "True"/"False",
### <string>: "String", <freq>: "<f> Hz/kHz/MHz"
### [arg]: arg optional
#Option "SWcursor" # [<bool>]
#Option "HWcursor" # [<bool>]
#Option "NoAccel" # [<bool>]
#Option "ShowCache" # [<bool>]
#Option "ShadowFB" # [<bool>]
#Option "UseFBDev" # [<bool>]
#Option "Rotate" # [<str>]
#Option "VideoKey" # [i]
#Option "FlatPanel" # [<bool>]
#Option "FPDither" # [<bool>]
#Option "CrtcNumber" # [i]
Identifier "Card0"
Driver "nv"
VendorName "nVidia Corporation"
BoardName "NV5M64 [RIVA TNT2 Model 64/Model 64 Pro]"
BusID "PCI:1:0:0"
EndSection

Section "Device"
### Available Driver options are:-
### Values: [i]: integer, <f>: float, <bool>: "True"/"False",
### <string>: "String", <freq>: "<f> Hz/kHz/MHz"
### [arg]: arg optional
#Option "SWcursor" # [<bool>]
#Option "HWcursor" # [<bool>]
#Option "PciRetry" # [<bool>]
#Option "SyncOnGreen" # [<bool>]
#Option "NoAccel" # [<bool>]
#Option "ShowCache" # [<bool>]
#Option "Overlay" # [<str>]
#Option "MGASDRAM" # [<bool>]
#Option "ShadowFB" # [<bool>]
#Option "UseFBDev" # [<bool>]
#Option "ColorKey" # [i]
#Option "SetMclk" # <freq>
#Option "OverclockMem" # [<bool>]
#Option "VideoKey" # [i]
#Option "Rotate" # [<str>]
#Option "TexturedVideo" # [<bool>]
#Option "Crtc2Half" # [<bool>]
#Option "Crtc2Ram" # [i]
#Option "Int10" # [<bool>]
#Option "AGPMode" # [i]
#Option "AGPSize" # [i]
#Option "DigitalScreen1" # [<bool>]
#Option "DigitalScreen2" # [<bool>]
#Option "TV" # [<bool>]
#Option "TVStandard" # [<str>]
#Option "CableType" # [<str>]
#Option "NoHal" # [<bool>]
#Option "SwappedHead" # [<bool>]
#Option "DRI" # [<bool>]
#Option "MergedFB" # [<bool>]
#Option "Monitor2HSync" # [<str>]
#Option "Monitor2VRefresh" # [<str>]
#Option "Monitor2Position" # [<str>]
#Option "MetaModes" # [<str>]
Identifier "Card1"
Driver "mga" VideoRam 8192
VendorName "Matrox Graphics, Inc."
BoardName "MGA 2064W [Millennium]"
BusID "PCI:2:9:0"
EndSection

Section "Screen"
Identifier "Screen0"
Device "Card0"
Monitor "Monitor0"
SubSection "Display"
Depth 1
EndSubSection
SubSection "Display"
Depth 4
EndSubSection VideoRam 8192
SubSection "Display"
Depth 8
EndSubSection
SubSection "Display"
Depth 15
EndSubSection
SubSection "Display"
Depth 16
EndSubSection
SubSection "Display"
Depth 24
EndSubSection
EndSection

Section "Screen"
Identifier "Screen1"
Device "Card1"
Monitor "Monitor1"
SubSection "Display"
Depth 1
EndSubSection
SubSection "Display"
Depth 4
EndSubSection
SubSection "Display"
Depth 8
EndSubSection
SubSection "Display"
Depth 15
EndSubSection
SubSection "Display"
Depth 16
EndSubSection
SubSection "Display"
Depth 24
EndSubSection
EndSection

[Allblack]

Some more info to the above.

I have it kind of working. When I issue the command "startx -- +xinerama" it goes into the GUI and my two monitors are displaying now.

Still some issues though,

Both monitors are only showing 256 colours and the resolution is set to 800 * 600 when I check with Redhat-config-xfree86. The odd thing is that the icons and text are really small

Would I be better off editing the XF86Config manually rather than relying on X -configure?

[Hellmasker]

i would back up ur xf86config file then edit it manually yes.

try commenting the lines (by placign # in front of them)

Subsection "display"
Depth 1
EndSubsection

for depths 1 thru 8. (on both SCREEN sections) this shoudl limit ur display to 15 bit (65365 color) and above

also in my screen subsections looks like this

Subsection "Display"
Depth 24
Modes "1280x1024" "1024x768" "800x600" "640x480"
EndSubsection

note the modes line
try copying this 1 into ur file (assuming the resolutions here are availible to u)

note: ur matrox card is specified as 8mb (ie 8192k) so im not sure whats with the 5906k problem

[Allblack]

It works fine.

I did not have defaulthdepth specified.

One more question though, Can I have different backgrounds for each display?
My background is stretched now. In windows I had the same background on each display.

cheers

[Dolda2000]

I haven't tried Xinerama, so I don't know exactly how it works, but I guess that there should be one root window for each monitor. Try some xloadimage -onroot and see what happens to your background.