[mythtv-users] MythTV 0.26 won't change refresh rate correctly

HP-mini blm-ubunet at slingshot.co.nz
Sun Dec 23 00:53:35 UTC 2012


On Fri, 2012-12-21 at 17:28 -0800, Daniel Osborne wrote:
> Hi, I've been running 0.24 until this week. With 0.24, I followed the
> wiki on http://www.mythtv.org/wiki/User_Manual:JudderFree and got
> judder-free working just fine.


> dragon mythtv # DISPLAY=:0.0 xrandr
> Screen 0: minimum 8 x 8, current 1920 x 1080, maximum 8192 x 8192
> VGA-0 disconnected (normal left inverted right x axis y axis)
> HDMI-0 connected 1920x1080+0+0 (normal left inverted right x axis y
> axis) 160mm x 90mm
>    1920x1080      60.0 +   60.0     60.0     59.9     30.0     24.0
> 30.0     30.0*
>    1280x1024      60.0
>    1280x720       60.0     59.9
>    1024x768       60.0
>    800x600        60.3
>    720x480        59.9
>    640x480        60.0     59.9
> 
> 
> dragon mythtv # cat /etc/X11/xorg.conf
> Section "Device"
>         Identifier "nvidia"
>         Driver  "nvidia"
>         Option  "NoLogo"              "true"
>         Option  "DynamicTwinView"     "false"
>         Option  "NoFlip"              "false"
>         Option  "ModeValidation"      "NoVesaModes, NoXServerModes,
> NoVertRefresh"
>         Option  "UseDisplayDevice"    "DFP-0"
>         Option  "ModeDebug"           "true"
>         Option  "HWCursor"            "false"
> EndSection
> 
> 
> Section "Screen"
>         Identifier      "screen"
>         Device          "nvidia"
>         SubSection      "Display"
>                 Modes "1920x1080_60_0" "1920x1080_24_0
>         EndSubSection
> EndSection
> 
> 
> Section "Extensions"
>         Option  "Composite"           "false"
> EndSection
> 
> 
> AMD Phenom II X4 810
> ASUS M3N78-VM w/GeForce 8300
> Gentoo x86_64
> 

MythTV pre - 0.25 was jitter/judder free with refresh rate / video
framerate mismatch.

Your xorg.conf setup seems to be at odds with the judder-free wiki.
The common use-case is bad EDID & requirement to force a VESA mode or
custom modeline.

You are using EDID modes & no dynamic twinview.
Dynamic twinview is/was required to allow meta-mode unique (fake)
refreshrate reporting to xrandr.
You are blocking VESA modes.
You have no monitor section (no vert/horiz freq ranges)
You have no screen in device section (prob not matter with one screen)

mythfrontend -v playback
might provide better info.

Can you run "nvidia-settings" & try each of the listed display
resolutions & check what your TV reports.




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