[mythtv-users] DVI vs VGA and HDTV

jack snodgrass mrlinuxgroups at gmail.com
Wed Sep 12 18:13:10 UTC 2007


On 9/12/07, Mailing Lists <mlists at dressler.ca> wrote:
> Hi all, I have a 1080i lcd flat panel that has several
> input types, including VGA, component, HDMI, etc.
>
> I'm running an Nvidia 6200 now.  It has a DVI and VGA
> port.  I'm currently connected via the VGA port.
>
> I purchased a DVI to HDMI cable but I can't get anything
> on the tv.  I've tried matching the TV resolution in my
> xorg.conf to the TV's native config, with the refresh
> rates, etc., but have had no luck.  I'm thinking it might
> be HDCP causing the problem.
>
> All that to say I'm looking for a viable solution.  What
> difference will I see between VGA and DVI?
>
> Any one have any suggestions on how to get the DVI to HDMI
> working?  I've searched the web and have tried alot of
> different things but not even a flicker from it.  Perhaps
> someone can suggest a modeline to try or an xorg.conf
> sample to try...  the TV is this:
> http://www.costco.ca/Browse/Product.aspx?Prodid=10291162&whse=bcca&topnav=&browse=&lang=en-CA
>
> Alternatively, I know some of the newer Nvidia cards
> support HDMI now?  Would that make things
> better/same/easier to configure?
>
> Thanks
> Norm

First of all... is this the primary or secondary monitor on your video card?
If it's the secondary monitor... was the cable connected to the card when you
booted? A lot of this secondary / DVI monitor setup stuff happens when the
box is booted and if you don't have a cable connected, the card detects this
and disabled the port on the board. If you plug in a cable after the fact, you
see nothing on the screen.

On both of my NVIDIA boards that are connected to HDTV monitors via $5
DVI->HDMI cables, I see the normal bios boot up messages when my boxes
boot.

My /var/log/Xorg.0.log shows:

egrep -i "Screen 1|Screen 0|NVIDIA\(" /logs/Xorg.0.log
(II) Setting vga for screen 0.
(II) Setting vga for screen 1.
(**) 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 "RenderAccel" "True"
(**) NVIDIA(0): Option "UseEdidDpi" "FALSE"
(**) NVIDIA(0): Option "DPI" "96 x 96"
(**) NVIDIA(0): Option "UseEvents" "true"
(**) NVIDIA(0): Option "AddARGBGLXVisuals" "True"
(**) NVIDIA(0): Option "DisableGLXRootClipping" "True"
(**) 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 Quadro FX 1400 (NV41GL) at PCI:1:0:0 (GPU-0)
(--) NVIDIA(0): Memory: 131072 kBytes
(--) NVIDIA(0): VideoBIOS: 05.41.02.43.09
(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 Quadro FX 1400 at PCI:1:0:0:
(--) NVIDIA(0):     Samsung SyncMaster (DFP-0)
(--) NVIDIA(0):     ViewSonic N3250w (DFP-1)
(--) NVIDIA(0): Samsung SyncMaster (DFP-0): 155.0 MHz maximum pixel clock
(--) NVIDIA(0): Samsung SyncMaster (DFP-0): Internal Single Link TMDS
(--) NVIDIA(0): ViewSonic N3250w (DFP-1): 155.0 MHz maximum pixel clock
(--) NVIDIA(0): ViewSonic N3250w (DFP-1): Internal Single Link TMDS
(II) NVIDIA(0): Assigned Display Device: DFP-0
(II) NVIDIA(0): Validated modes:
(II) NVIDIA(0):     "1280x1024"
(II) NVIDIA(0):     "1152x864"
(II) NVIDIA(0):     "1024x768"
(II) NVIDIA(0): Virtual screen size determined to be 1280 x 1024
(**) NVIDIA(0): DPI set to (96, 96); computed from "DPI" X config option
(WW) NVIDIA(0): UBB is incompatible with the Composite extension.  Disabling
(WW) NVIDIA(0):     UBB.
(**) NVIDIA(0): Enabling 32-bit ARGB GLX visuals.
(**) NVIDIA(1): Depth 24, (--) framebuffer bpp 32
(==) NVIDIA(1): RGB weight 888
(==) NVIDIA(1): Default visual is TrueColor
(==) NVIDIA(1): Using gamma correction (1.0, 1.0, 1.0)
(**) NVIDIA(1): Option "RenderAccel" "True"
(**) NVIDIA(1): Option "UseEvents" "true"
(**) NVIDIA(1): Option "AddARGBGLXVisuals" "True"
(**) NVIDIA(1): Option "DisableGLXRootClipping" "True"
(**) NVIDIA(1): Enabling RENDER acceleration
(II) NVIDIA(1): NVIDIA GPU Quadro FX 1400 (NV41GL) at PCI:1:0:0 (GPU-0)
(--) NVIDIA(1): Memory: 131072 kBytes
(--) NVIDIA(1): VideoBIOS: 05.41.02.43.09
(II) NVIDIA(1): Detected PCI Express Link width: 16X
(--) NVIDIA(1): Interlaced video modes are supported on this GPU
(--) NVIDIA(1): Connected display device(s) on Quadro FX 1400 at PCI:1:0:0:
(--) NVIDIA(1):     Samsung SyncMaster (DFP-0)
(--) NVIDIA(1):     ViewSonic N3250w (DFP-1)
(--) NVIDIA(1): Samsung SyncMaster (DFP-0): 155.0 MHz maximum pixel clock
(--) NVIDIA(1): Samsung SyncMaster (DFP-0): Internal Single Link TMDS
(--) NVIDIA(1): ViewSonic N3250w (DFP-1): 155.0 MHz maximum pixel clock
(--) NVIDIA(1): ViewSonic N3250w (DFP-1): Internal Single Link TMDS
(II) NVIDIA(1): Assigned Display Device: DFP-1
(WW) NVIDIA(1): No valid modes for "1440x900"; removing.
(WW) NVIDIA(1):
(WW) NVIDIA(1): Unable to validate any modes; falling back to the default mode
(WW) NVIDIA(1):     "nvidia-auto-select".
(WW) NVIDIA(1):
(II) NVIDIA(1): Validated modes:
(II) NVIDIA(1):     "nvidia-auto-select"
(II) NVIDIA(1): Virtual screen size determined to be 1360 x 768
(--) NVIDIA(1): DPI set to (49, 50); computed from "UseEdidDpi" X config
(--) NVIDIA(1):     option
(WW) NVIDIA(1): UBB is incompatible with the Composite extension.  Disabling
(WW) NVIDIA(1):     UBB.
(**) NVIDIA(1): Enabling 32-bit ARGB GLX visuals.
(II) NVIDIA(0): Unable to connect to the ACPI daemon; the ACPI daemon may not
(II) NVIDIA(0):     be running or the "AcpidSocketPath" X configuration option
(II) NVIDIA(0):     may not be set correctly.  When the ACPI daemon is
(II) NVIDIA(0):     available, the NVIDIA X driver can use it to receive ACPI
(II) NVIDIA(0):     events.  For details, please see the "ConnectToAcpid" and
(II) NVIDIA(0):     "AcpidSocketPath" X configuration options in Appendix B: X
(II) NVIDIA(0):     Config Options in the README.
(II) NVIDIA(0): Setting mode "1280x1024"
(II) NVIDIA(0): NVIDIA 3D Acceleration Architecture Initialized
(II) NVIDIA(0): Using the NVIDIA 2D acceleration architecture
(==) NVIDIA(0): Backing store disabled
(==) NVIDIA(0): Silken mouse enabled
(**) NVIDIA(0): DPMS enabled
(WW) NVIDIA(0): Option "DRI" is not used
(II) NVIDIA(1): Unable to connect to the ACPI daemon; the ACPI daemon may not
(II) NVIDIA(1):     be running or the "AcpidSocketPath" X configuration option
(II) NVIDIA(1):     may not be set correctly.  When the ACPI daemon is
(II) NVIDIA(1):     available, the NVIDIA X driver can use it to receive ACPI
(II) NVIDIA(1):     events.  For details, please see the "ConnectToAcpid" and
(II) NVIDIA(1):     "AcpidSocketPath" X configuration options in Appendix B: X
(II) NVIDIA(1):     Config Options in the README.
(II) NVIDIA(1): Setting mode "nvidia-auto-select"
(II) NVIDIA(1): NVIDIA 3D Acceleration Architecture Initialized
(II) NVIDIA(1): Using the NVIDIA 2D acceleration architecture
(==) NVIDIA(1): Backing store disabled
(==) NVIDIA(1): Silken mouse enabled
(**) NVIDIA(1): DPMS enabled
(WW) NVIDIA(1): Option "DRI" is not used


so you can see that xorg detects both monitors at boot time. The
HDTV monitor is on the second port.

jack


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