Forcing use of non-existant display?
 

I have a Kubuntu-based MythTV-system (Mythbuntu). I use a GS7300
video card connected to my LG LCD-TV.

However, i have noticed that if the TV is not turned on when i boot
my system, i get no video, and X complains about display not found.

Is there any way i can force this? I enclose a piece of log from a
failure, and a success.

(II) NVIDIA(0): Creating default Display subsection in Screen
section
******* "Screen0" for depth/fbbpp 24/32
(**) NVIDIA(0): Depth 24, (--) framebuffer bpp 32
(==) NVIDIA(0): RGB weight 888
(==) NVIDIA(0): Default visual is TrueColor
(==) NVIDIA(0): Using gamma correction (1.0, 1.0, 1.0)
(**) NVIDIA(0): Option "TwinView" "0"
(**) NVIDIA(0): Option "MetaModes" "1366x768 +0+0; 720x480 +0+0;
720x450 +0+0; 6
40x480 +0+0; 640x400 +0+0; 640x384 +0+0"
(**) NVIDIA(0): Enabling RENDER acceleration
(II) NVIDIA(0): Support for GLX with the Damage and Composite X
extensions is
(II) NVIDIA(0):**** enabled.
(II) NVIDIA(GPU-0): No display devices connected; falling back to:
CRT-0
(WW) NVIDIA(GPU-0): Unable to read EDID for display device CRT-0
(II) NVIDIA(0): NVIDIA GPU GeForce 7300 GS (G72) at PCI:1:0:0 (GPU-0)
(--) NVIDIA(0): Memory: 524288 kBytes
(--) NVIDIA(0): VideoBIOS: 05.72.22.63.03
(II) NVIDIA(0): Detected PCI Express Link width: 16X
(--) NVIDIA(0): Interlaced video modes are supported on this GPU
(--) NVIDIA(0): Connected display device(s) on GeForce 7300 GS at
PCI:1:0:0:
(--) NVIDIA(0):**** CRT-0
(--) NVIDIA(0): CRT-0: 400.0 MHz maximum pixel clock
(II) NVIDIA(0): Assigned Display Device: CRT-0
(WW) NVIDIA(0): No valid modes for "1366x768+0+0"; removing.
(WW) NVIDIA(0): No valid modes for "720x480+0+0"; removing.
(II) NVIDIA(0): Validated modes:
(II) NVIDIA(0):**** "720x450+0+0"
(II) NVIDIA(0):**** "640x480+0+0"
(II) NVIDIA(0):**** "640x400+0+0"
(II) NVIDIA(0):**** "640x384+0+0"
(II) NVIDIA(0): Virtual screen size determined to be 720 x 480
(++) NVIDIA(0): DPI set to (100, 100); computed from -dpi X
commandline option
(==) NVIDIA(0): Enabling 32-bit ARGB GLX visuals.
(--) Depth 24 pixmap format is 32 bpp

-----

(II) Setting vga for screen 0.
(II) NVIDIA(0): Creating default Display subsection in Screen section
******* "Screen0" for depth/fbbpp 24/32
(**) NVIDIA(0): Depth 24, (--) framebuffer bpp 32
(==) NVIDIA(0): RGB weight 888
(==) NVIDIA(0): Default visual is TrueColor
(==) NVIDIA(0): Using gamma correction (1.0, 1.0, 1.0)
(**) NVIDIA(0): Option "TwinView" "0"
(**) NVIDIA(0): Option "MetaModes" "1366x768 +0+0; 720x480 +0+0;
720x450 +0+0; 640x480 +0+0; 640x400 +0+0; 640x384 +0+0"
(**) NVIDIA(0): Enabling RENDER acceleration
(II) NVIDIA(0): Support for GLX with the Damage and Composite X
extensions is
(II) NVIDIA(0):**** enabled.
(II) NVIDIA(0): NVIDIA GPU GeForce 7300 GS (G72) at PCI:1:0:0 (GPU-0)
(--) NVIDIA(0): Memory: 524288 kBytes
(--) NVIDIA(0): VideoBIOS: 05.72.22.63.03
(II) NVIDIA(0): Detected PCI Express Link width: 16X
(--) NVIDIA(0): Interlaced video modes are supported on this GPU
(--) NVIDIA(0): Connected display device(s) on GeForce 7300 GS at
PCI:1:0:0:
(--) NVIDIA(0):**** LG 42LC46 (DFP-0)
(--) NVIDIA(0): LG 42LC46 (DFP-0): 165.0 MHz maximum pixel clock
(--) NVIDIA(0): LG 42LC46 (DFP-0): Internal Single Link TMDS
(II) NVIDIA(0): Assigned Display Device: DFP-0
(WW) NVIDIA(0): No valid modes for "1366x768+0+0"; removing.
(II) NVIDIA(0): Validated modes:
(II) NVIDIA(0):**** "720x480+0+0"
(II) NVIDIA(0):**** "720x450+0+0"
(II) NVIDIA(0):**** "640x480+0+0"
(II) NVIDIA(0):**** "640x400+0+0"
(II) NVIDIA(0):**** "640x384+0+0"
(II) NVIDIA(0): Virtual screen size determined to be 720 x 480
(++) NVIDIA(0): DPI set to (100, 100); computed from -dpi X
commandline option
(==) NVIDIA(0): Enabling 32-bit ARGB GLX visuals.
(--) Depth 24 pixmap format is 32 bpp
(II) do I need RAC?* No, I don't.



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