Only Ubuntu 2D after Xinerama.

[krs000]

I have Ubuntu PP desktop 64 bits with recommended nvidia drivers. I have 1 Monitor and 1 TV connected to the same video card Geforce 9800 GT (2 DVI).

I use the TV from time to time as a second monitor. Because the settings were not all that clear I messed around with Xinerama and XServer configuration. Later when I put everything back on default and re-saved to X config I am stuck with only UBUNTU 2D!???

Can anyone take a look and help me get 3D back again?

Here my X-Config


# nvidia-settings: X configuration file generated by nvidia-settings
# nvidia-settings: version 295.33 (buildd@allspice) Fri Mar 30 15:25:24 UTC 2012


Section "ServerLayout"

# Removed Option "Xinerama" "1"
Identifier "Layout0"
Screen 0 "Screen0" 0 0
InputDevice "Keyboard0" "CoreKeyboard"
InputDevice "Mouse0" "CorePointer"
Option "Xinerama" "0"
# Removed Option "Xinerama" "0"
EndSection

Section "InputDevice"
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 "Monitor1"
VendorName "Unknown"
ModelName "SONY TV"
HorizSync 14.0 - 70.0
VertRefresh 48.0 - 62.0
Option "DPMS"
EndSection

Section "Monitor"
Identifier "Monitor0"
VendorName "Unknown"
ModelName "BenQ FP91E"
HorizSync 31.0 - 83.0
VertRefresh 56.0 - 76.0
Option "DPMS"
# HorizSync source: edid, VertRefresh source: edid
EndSection

Section "Device"
Identifier "Device1"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BoardName "GeForce 9800 GT"
BusID "PCI:1:0:0"
Screen 1
EndSection

Section "Device"
Identifier "Device0"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BoardName "GeForce 9800 GT"
Option "NoLogo" "True"
EndSection

Section "Screen"
Identifier "Screen1"
Device "Device1"
Monitor "Monitor1"
DefaultDepth 24
Option "TwinView" "0"
Option "TwinViewXineramaInfoOrder" "DFP-1"
Option "metamodes" "DFP-1: 1920x1080_60 +0+0"
SubSection "Display"
Depth 24
EndSubSection
EndSection

Section "Screen"

# Removed Option "metamodes" "DFP-0: 1280x1024_60 +0+0"
# Removed Option "TwinView" "1"
# Removed Option "metamodes" "DFP-0: 1280x1024_60 +0+0, DFP-1: 1920x1080_60 +1280+0"
# Removed Option "metamodes" "DFP-0: 1280x1024_60 +0+0"
# Removed Option "TwinView" "0"
# Removed Option "metamodes" "1280x1024_60 +0+0"
# Removed Option "metamodes" "DFP-0: 1280x1024_72 +0+0, DFP-1: 1920x1080_60 +1280+0; DFP-0: 1280x1024_60 +0+0, DFP-1: nvidia-auto-select +1280+0"
Identifier "Screen0"
Device "Device0"
Monitor "Monitor0"
DefaultDepth 24
Option "TwinView" "1"
Option "TwinViewXineramaInfoOrder" "DFP-0"
Option "metamodes" "DFP-0: 1280x1024_60 +0+0, DFP-1: nvidia-auto-select +1280+0; DFP-0: 1280x1024_72 +0+0, DFP-1: 1920x1080_60 +1280+0"
SubSection "Display"
Depth 24
EndSubSection
EndSection

Section "Extensions"
Option "Composite" "Disable"
EndSection

[nickk9]

I was experimenting with xinerama myself and lost 3D, turning it off again still didn't bring back 3D, so I searched and found this post.

I don't play with linux that much, so it didn't occur to me to look at the xorg file until I looked at yours. Turns out the fix was quite simple:

Just change (bottom of xorg.conf):

Section "Extensions"
Option "Composite" "Disable"
EndSection

to:

Section "Extensions"
Option "Composite" "Enable"
EndSection

Log out and back in again. Worked on mine at least (Linux Mint 13 KDE edition).

I guess you may have found another solution by now, but may help others (and me when I forget in the future!)