[mythtv-users] Possible XvMC prebuffering issues solution?

Michael Tiller michael.tiller at gmail.com
Thu Nov 30 22:28:54 UTC 2006


On 11/30/06, Jan Vilhuber <jan at vilhuber.com> wrote:
>
> try starting X with -logverbose 6 and see. In my case, it prints out
> a bunch of built-in and edid-derived modelines, and also why some
> modes are rejected..
>
> jan


 Hmmm...

Well, this is what my X log says:

(II) NVIDIA(0): NVIDIA GPU GeForce4 MX 4000 at PCI:0:9:0
(--) NVIDIA(0): VideoRAM: 65536 kBytes
(--) NVIDIA(0): VideoBIOS: 04.18.20.39.07
(--) NVIDIA(0): Interlaced video modes are supported on this GPU
(--) NVIDIA(0): Connected display device(s) on GeForce4 MX 4000 at
PCI:0:9:0:
(--) NVIDIA(0):     NVIDIA TV Encoder (TV-0)
(--) NVIDIA(0): NVIDIA TV Encoder (TV-0): 350.0 MHz maximum pixel clock
(--) NVIDIA(0): TV encoder: NVIDIA
(II) NVIDIA(0): Assigned Display Device: TV-0
(WW) NVIDIA(0): No valid modes for "720x480_60"; removing.
(WW) NVIDIA(0): No valid modes for "NTSC_60i"; removing.
(WW) NVIDIA(0):
(WW) NVIDIA(0): Unable to validate any modes; falling back to the default
mode
(WW) NVIDIA(0):     "nvidia-auto-select".
(WW) NVIDIA(0):
(II) NVIDIA(0): Validated modes:
(II) NVIDIA(0):     "nvidia-auto-select"
(II) NVIDIA(0): Virtual screen size determined to be 1024 x 768


It apparently doesn't like my modelines and modes.  Here is a snippet from
my xorg.conf...

Section "Monitor"
        Identifier   "Monitor0"
        VendorName   "Monitor Vendor"
        ModelName    "27in Analog TV"
        HorizSync    30.0 - 50.0
        #VertRefresh  60.0 - 60.0
        Option       "dpms"
        Option       "UseEdidDpi" "FALSE"
        Option       "DPI" "100 x 100"
        ModeLine "NTSC_60i" 14.318 768 784 848 910 483 484 492 525 Interlace
        Modeline "720x480_60" 26.72  720 736 808 896  480 481 484 497
-HSync +Vsync
EndSection

I got the first Modeline from the MythTV modeline page in Wiki and the
second was generated by gtf.

Then I use them as follows:

Section "Screen"
        Identifier "Screen0"
        Device     "Videocard0"
        Monitor    "Monitor0"
        DefaultDepth     24
        SubSection "Display"
                Depth     24
#               #Modes    "1024x768_60" "800x600_60" "640x480_60"
#               #Modes    "800x600_60" "640x480_60"
                Modes "720x480_60" "NTSC_60i"
        EndSubSection
EndSection

Can anybody see why these should be rejected?  Remember, I'm outputting to a
TV, not a monitor.

--
Mike
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