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View Full Version : [ubuntu] Dual Nvidia / Xinema / 3 monitor - GDM / X Blinks



djtoast
January 11th, 2010, 01:49 AM
Problem Description: Using 2 nvidia cards, 3 monitors, seperate X window. As soon as I activate Xinerama when i get to GDM login screen it just blinks between screens as if its trying to detect something

Setup:
Core i7 860
Asus p7p55d-e
Corsair dominator 4gb 1600mhz
Video card 1: nvidia 9800GTX (I also tried with 7800gt as my 9800gtx is now beeing rma'ed)
Video card 2: nvidia 9500GT
PSU Corsair 750tx
Nvidia drivers: 190.53
Ubuntu: 9.10 (Updated / fresh install)


xorg.conf


# nvidia-settings: X configuration file generated by nvidia-settings
# nvidia-settings: version 1.0 (buildmeister@builder58) Wed Dec 9 16:35:48 PST 2009

Section "ServerLayout"
Identifier "Layout0"
Screen 0 "Screen0" 0 0
Screen 1 "Screen1" RightOf "Screen0"
Screen 2 "Screen2" LeftOf "Screen0"
InputDevice "Keyboard0" "CoreKeyboard"
InputDevice "Mouse0" "CorePointer"
EndSection

Section "Files"
EndSection

Section "Module"
Load "dbe"
Load "extmod"
Load "glx"
EndSection

Section "ServerFlags"
Option "Xinerama" "1"
EndSection

Section "InputDevice"
# generated from default
Identifier "Mouse0"
Driver "mouse"
Option "Protocol" "auto"
Option "Device" "/dev/psaux"
Option "Emulate3Buttons" "no"
Option "ZAxisMapping" "4 5"
EndSection

Section "InputDevice"
# generated from default
Identifier "Keyboard0"
Driver "kbd"
EndSection

Section "Monitor"
Identifier "Monitor0"
VendorName "Unknown"
ModelName "DELL 1907FP"
HorizSync 30.0 - 81.0
VertRefresh 56.0 - 76.0
Option "DPMS"
EndSection

Section "Monitor"
Identifier "Monitor1"
VendorName "Unknown"
ModelName "DELL 1907FP"
HorizSync 30.0 - 81.0
VertRefresh 56.0 - 76.0
EndSection

Section "Monitor"
Identifier "Monitor2"
VendorName "Unknown"
ModelName "DELL 1907FP"
HorizSync 30.0 - 81.0
VertRefresh 56.0 - 76.0
EndSection

Section "Device"
Identifier "Device0"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BoardName "GeForce 7800 GT"
BusID "PCI:1:0:0"
Screen 0
EndSection

Section "Device"
Identifier "Device1"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BoardName "GeForce 7800 GT"
BusID "PCI:1:0:0"
Screen 1
EndSection

Section "Device"
Identifier "Device2"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BoardName "GeForce 9500 GT"
BusID "PCI:2:0:0"
EndSection


Section "Screen"
Identifier "Screen0"
Device "Device0"
Monitor "Monitor0"
DefaultDepth 24
Option "TwinView" "0"
#Option "TwinViewXineramaInfoOrder" "CRT-0"
Option "metamodes" "CRT: nvidia-auto-select +0+0"
SubSection "Display"
Depth 24
EndSubSection
EndSection


Section "Screen"
Identifier "Screen1"
Device "Device1"
Monitor "Monitor1"
DefaultDepth 24
Option "TwinView" "0"
Option "metamodes" "DFP: nvidia-auto-select +0+0"
SubSection "Display"
Depth 24
EndSubSection
EndSection

Section "Screen"
Identifier "Screen2"
Device "Device2"
Monitor "Monitor2"
DefaultDepth 24
Option "TwinView" "0"
Option "metamodes" "nvidia-auto-select +0+0"
SubSection "Display"
Depth 24
EndSubSection
EndSection

I bough this setup to use 3 monitor in Ubuntu, and plan to use this as my work system.

PS: Tested these cards with windows 7 and works in triple screens.

djtoast
January 11th, 2010, 02:52 AM
Im not sure how to get propre logs of this. /var/log/gdm all files are at 0 empty.

Can someone direct me on how to troubleshoot this issue. xinema activated make its not load login screen.

Id like to see whats going on , ps tryed to launch gdb --debug from recue mode and it doesnt put out debug info in messages.

This makes me think its a problem with X not starting up.