Turning off and then on a TV has "no signal"

[anevis]

Hi,
I have my TV and projector connected to my GTS450 and configured for twinview (config included). Both are connected from the DVI port in the card using a DVI to HDMI cable.

The issue:
On initial boot (TV truned on) all is fine and the display works well, but once I turn off the TV and turn it back on the TV displays "no signal". My projector is fine and works well.

The workaround that I currently use to get around this is by pressing Ctrl+Alt+F2 to get to tty2 and then Ctrl+Alt+F7 to get back to the GUI.
This is frustrating not to mention the unhappy missus.

I've tried a few things suggested in forums (used google search) but no use.

The OS is Ubuntu 12.04 (Just installed it yesterday)
I had the same issue in 10.10 so I upgraded to 11.04 and 11.10 and found that my system will not boot with kernel 3.0.x so I finally upgraded to 12.04 all is fine except for this issue.

Any help will be greatly appreciated.

Regards,
Antony

Hardware:
=======================
Motherboard: ASUS P8Z68V-Pro
CPU: Intel(R) Core(TM) i7-2600K CPU @ 3.40GHz
Graphics Card: Gigabyte 1GB GTS450 PCI-E
TV: Samsumg LCD

xorg.conf
=======================
# nvidia-settings: X configuration file generated by nvidia-settings
# nvidia-settings: version 290.10 (buildmeister@swio-display-x86-rhel47-07.nvidia.com) Wed Nov 16 18:46:42 PST 2011


Section "ServerLayout"
Identifier "Layout0"
Screen 0 "Screen0" 0 0
# commented out by update-manager, HAL is now used and auto-detects devices
# Keyboard settings are now read from /etc/default/console-setup
# InputDevice "Keyboard0" "CoreKeyboard"
# commented out by update-manager, HAL is now used and auto-detects devices
# Keyboard settings are now read from /etc/default/console-setup
# InputDevice "Mouse0" "CorePointer"
Option "Xinerama" "0"
EndSection

Section "Files"
EndSection

# commented out by update-manager, HAL is now used and auto-detects devices
# Keyboard settings are now read from /etc/default/console-setup
#Section "InputDevice"
#
# # generated from default
# Identifier "Mouse0"
# Driver "mouse"
# Option "Protocol" "auto"
# Option "Device" "/dev/psaux"
# Option "Emulate3Buttons" "no"
# Option "ZAxisMapping" "4 5"
#EndSection

# commented out by update-manager, HAL is now used and auto-detects devices
# Keyboard settings are now read from /etc/default/console-setup
#Section "InputDevice"
#
# # generated from default
# Identifier "Keyboard0"
# Driver "kbd"
#EndSection

Section "Monitor"

# HorizSync source: edid, VertRefresh source: edid
Identifier "Monitor0"
VendorName "Unknown"
ModelName "SAMSUNG"
HorizSync 26.0 - 81.0
VertRefresh 24.0 - 75.0
modeline "1920x1080" 148.50 1920 2008 2052 2200 1080 1084 1089 1125 +hsync +vsync
# Option "DPMS"
EndSection

Section "Device"
Identifier "Device0"
# Driver "nvidia"
VendorName "NVIDIA Corporation"
BoardName "GeForce GTS 450"
Option "CustomEDID" "DFP-0:/etc/X11/edid-samsung-tv.bin;DFP-2:/etc/X11/edid-panasonic-ax100.bin"
EndSection

Section "Screen"
Identifier "Screen0"
Device "Device0"
Monitor "Monitor0"
DefaultDepth 24
Option "TwinView" "1"
Option "ConnectedMonitor" "DFP-0,DFP-2"
Option "ExactModeTimingsDVI" "TRUE"
Option "metamodes" "DFP-0: 1920x1080 +0+0,DFP-2: 1920x1080 +0+0"
# Option "metamodes" "DFP-0: nvidia-auto-select +0+0, DFP-2: nvidia-auto-select +0+0"
SubSection "Display"
Depth 24
Modes "1920x1080"
EndSubSection
EndSection
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