tri-head Xinerama X.conf issue

**jwilliams** · 12-29-2004

Hi - I'm a running a tri-head Xinerama setup. Fortunately, I finally made a xorg.conf that boots X the way I want. Unfortunately, I can no longer switch to consoles (<ctrl><alt><f3> etc) because trying to do so freezes X. I have to use exclusively the X interface. This is the end of the world. Can anyone help?

Here is my xorg.conf file...

Code:

# XFree86 4.0 configuration made by Jameson H. Wiliams

Section "ServerLayout"
Identifier "XFree86 Configured"
Screen 0 "Screen0" 0 0
Screen "Screen 1" RightOf "Screen 0"
Screen "Screen 2" LeftOf "Screen 0"
InputDevice "Mouse0" "CorePointer"
InputDevice "Keyboard0" "CoreKeyboard"
EndSection

# By default, Red Hat Linux 6.0 and later use xfs

Section "Files"
FontPath "unix/&#58;7100"
EndSection


# Module loading section

Section "Module"
Load "dbe" # Double-buffering
Load "GLcore" # OpenGL support
Load "dri" # Direct rendering infrastructure
Load "glx" # OpenGL X protocol interface
Load "extmod" # Misc. required extensions
Load "v4l" # Video4Linux
Load "record" # X event recorder
# You only need the following two modules if you do not use xfs.
# Load "freetype" # TrueType font handler
# Load "type1" # Adobe Type 1 font handler
EndSection


Section "ServerFlags"
Option "Xinerama"
EndSection

Section "InputDevice"
Identifier "Keyboard0"
Driver "kbd"
Option "XkbLayout" "us"
EndSection

Section "InputDevice"
Identifier "Mouse0"
Driver "mouse"
Option "Device" "/dev/input/mice"
Option "Protocol" "IMPS/2"
Option "Emulate3Buttons" "on"
Option "ZAxisMapping" "4 5"
EndSection


# monitor screen 0
Section "Monitor"
Identifier "vp171b"
VendorName "Monitor Vendor"
ModelName "ViewSonic VP171b"
HorizSync 30.0 - 82.0
VertRefresh 50.0 - 85.0
Option "dpms"
EndSection

# monitor for screen 1
Section "Monitor"
Identifier "sdmm51"
VendorName "Monitor Vendor"
ModelName "LCD Panel 1024x768"
HorizSync 31.5 - 48.5
VertRefresh 40.0 - 70.0
Option "dpms"
EndSection

# monitor for screen 2
Section "Monitor"
Identifier "ev700"
VendorName "Monitor Vendor"
ModelName "Gateway EV700"
HorizSync 31.0 - 69.0
VertRefresh 50.0 - 110.0
Option "dpms"
EndSection


# device for screen 0
Section "Device"
Identifier "ATIP"
Driver "radeon"
BusID "PCI&#58;1&#58;00&#58;0"
Option "AGPMode" "2"
Screen 0
EndSection

# device for screen 1
Section "Device"
Identifier "ATIS"
Driver "radeon"
BusID "PCI&#58;1&#58;0&#58;0"
Option "AGPMode" "2"
Screen 1
EndSection

# device for screen 2
Section "Device"
Identifier "tnt2"
Driver "nv"
BusID "PCI&#58;0&#58;10&#58;0"
VendorName "Videocard vendor"
BoardName "RIVA TNT2"
EndSection

Section "Screen"
Identifier "Screen 0"
Device "ATIP"

Monitor "vp171b"
DefaultDepth 16
SubSection "Display"
Viewport 0 0
Depth 16
Modes "1280x1024" "1280x960" "1152x864" "1024x768" "800x600" "640x480"
EndSubSection
EndSection

Section "Screen"
Identifier "Screen 1"
Device "ATIS"
Monitor "sdmm51"
DefaultDepth 16
SubSection "Display"
Viewport 0 0
Depth 16
Modes "1024x768" "800x600" "640x480"
EndSubSection
EndSection

Section "Screen"
Identifier "Screen 2"
Device "tnt2"
Monitor "ev700"
DefaultDepth 16
SubSection "Display"
Viewport 0 0
Depth 16
Modes "1280x1024" "1280x960" "1152x864" "1024x768" "800x600" "640x480"
EndSubSection
EndSection

#Section "DRI"
# Mode 0666
#EndSection

- Jameson Williams, Fedora Core 3 x86_64
(left) Gateway EV700 on nVidia RIVA TNT2 PCI
(center, main) ViewSonic VP171b on ATI Radeon 9800 Pro 256MB Primary
(right) Sony SDM-M51 on ATI Radeon 9800 Pro 256MB Secondary

**UgoDeschamps** · 12-29-2004

HOLY MOTHER OF GOD!!!
thats what I'm talking about when speeking of multi-Screen setup!!
damn..
I'm not quite sure of this, but i might be a general limit that other then X cannot support... I'll have a good look at this since I never seen this...

Can you restart X after it crashes?
can you

Code:

CTRL-ALT-BCKSP
startx

without X crashing?

**lakerdonald** · 12-29-2004

correct me if i'm wrong, but when you do get into a text/console/alt-f1 environment, it is only on one display?
also, have you tried removing one factor, and tried a dual head? perhaps there is some incompatibility between one of the three monitors? you could eliminate the bad one, by trying combinations of 2, perhaps?

**UgoDeschamps** · 12-29-2004

Originally Posted by jwilliams

# device for screen 0
Section "Device"
Identifier "ATIP"
Driver "radeon"
BusID "PCI:1:00:0"
Option "AGPMode" "2"
Screen 0
EndSection

# device for screen 1
Section "Device"
Identifier "ATIS"
Driver "radeon"
BusID "PCI:1:0:0"
Option "AGPMode" "2"
Screen 1
EndSection

# device for screen 2
Section "Device"
Identifier "tnt2"
Driver "nv"
BusID "PCI:0:10:0"
VendorName "Videocard vendor"
BoardName "RIVA TNT2"
EndSection

also the 2 first screen seems to be on the same PCI... 1.0.0, 1.00.0
since im not sure that 1:0:0 and 1:00:0 is the same, can you post your reading on this command please :

Code:

lspci

**lakerdonald** · 12-29-2004

you do know that you can share pci/irq/etc.

**UgoDeschamps** · 12-29-2004

I do... but this could make things unstable.. that why I asked..
IRQ sharing is like having protected memory been written by many threads... quite dangerous if not monitored properly
since his system his crashing... this could be an option

**lakerdonald** · 12-29-2004

True, don't quite know what changing the PCI/IRQ would entail though.

**UgoDeschamps** · 12-29-2004

entail? never heard that word... what does it meen?

**lakerdonald** · 12-29-2004

involve, require (in a sense of having to be done), presuppose

**UgoDeschamps** · 12-29-2004

ok thanks... I'll go to sleep 1 word smarter!

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