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I am really scratching my head here. I have a Pioneer PDP-435FDE screen connected through HDMI to a Zotac ZBox ID-41 (ION2), running Xubuntu 11.04 and XBMC and NVidia drivers 270.24. The system is stuck at 50Hz. I know the screen can handle 60 Hz, had it working at 60Hz with a cheap mediaplayer setup before.

- In NVidia Setting, I can select "60 Hz", but this doesn't do anything (the Pioneer display does characteristic flashes when changing refresh rates, but they don't happen here - also the "Flat Panel Information" in the NVidia control panel remains at 50Hz).

- In XBMC, I can only select "50 Hz", "51 Hz" and "52 Hz" as refresh rates.

I tried to follow this guide, without results: http://forum.xbmc.org/showthread.php?tid=70068

From the instructions in the thread mentioned above, I was able to extract the following EDID modes information:

Code:
--- Modes in ModePool for Pioneer Electronic Corporation PDP-R05 (DFP-1) ---
"nvidia-auto-select" : 1920 x 1080 @  50.0 Hz Interlace  (from: EDID)
"1920x1080"          : 1920 x 1080 @  50.0 Hz Interlace  (from: EDID)
"1920x1080_50i"      : 1920 x 1080 @  50.0 Hz Interlace  (from: EDID)
"1920x1080_60i"      : 1920 x 1080 @  60.1 Hz Interlace  (from: EDID)
"1920x1080_60i_0"    : 1920 x 1080 @ 59.94/60 Hz (CEA-861B Format 5) (from: EDID)
"1360x768"           : 1360 x  768 @  60.0 Hz  (from: X Server)
"1360x768_60"        : 1360 x  768 @  60.0 Hz  (from: X Server)
"1280x720"           : 1280 x  720 @  60.0 Hz  (from: EDID)
"1280x720_60"        : 1280 x  720 @  60.0 Hz  (from: EDID)
"1280x720_60_0"      : 1280 x  720 @ 59.94/60 Hz (CEA-861B Format 4) (from: EDID)
"1280x720_50"        : 1280 x  720 @  50.0 Hz  (from: EDID)
"1024x768"           : 1024 x  768 @  75.0 Hz  (from: X Server, VESA)
"1024x768i"          : 1024 x  768 @  87.0 Hz Interlace  (from: X Server)
"1024x768_75"        : 1024 x  768 @  75.0 Hz  (from: X Server, VESA)
"1024x768_70"        : 1024 x  768 @  70.1 Hz  (from: X Server, VESA)
"1024x768_60"        : 1024 x  768 @  60.0 Hz  (from: X Server, VESA)
"1024x768_87i"       : 1024 x  768 @  87.0 Hz Interlace  (from: VESA)
"1024x768_87i_0"     : 1024 x  768 @  87.0 Hz Interlace  (from: X Server)

[removed a lot of irrelevant lower resolutions]

--- End of ModePool for Pioneer Electronic Corporation PDP-R05 (DFP-1): ---

My xorg.conf looks like this, with mods from the thread before:

Code:
# nvidia-settings: X configuration file generated by nvidia-settings
# nvidia-settings:  version 270.29  (buildd@roseapple)  Fri Feb 25 14:43:24 UTC 2011


Section "ServerLayout"
    Identifier     "Layout0"
    Screen      0  "Screen0" 0 0
    InputDevice    "Keyboard0" "CoreKeyboard"
    InputDevice    "Mouse0" "CorePointer"
    Option         "Xinerama" "0"
EndSection

Section "Files"
EndSection

Section "InputDevice"

    # generated from default
    Identifier     "Mouse0"
    Driver         "mouse"
    Option         "Protocol" "auto"
    Option         "Device" "/dev/psaux"
    Option         "Emulate3Buttons" "no"
    Option         "ZAxisMapping" "4 5"
EndSection

Section "InputDevice"

    # generated from default
    Identifier     "Keyboard0"
    Driver         "kbd"
EndSection

Section "Monitor"

    # HorizSync source: edid, VertRefresh source: edid
    Identifier     "Monitor0"
    VendorName     "Unknown"
    ModelName      "Pioneer Electronic Corporation PDP-R05"
    HorizSync       15.0 - 46.0
    VertRefresh     49.0 - 61.0
    Option         "DPMS"
EndSection

Section "Device"
    Identifier     "Device0"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BoardName      "ION"
    Option         "ModeDebug" "true"
EndSection

Section "Screen"

# Removed Option "metamodes" "1280x720_60 +0+0"
    Identifier     "Screen0"
    Device         "Device0"
    Monitor        "Monitor0"
    DefaultDepth    24
    Option         "TwinView" "0"
    Option         "metamodes" "1280x720_60_0 +0+0"
    SubSection     "Display"
    Modes       "1280x720_60_0" "1280x720_50"
        Depth       24
    EndSubSection
EndSection

Commenting out the "metamodes" line above results in XBMC not offering any selection for the refresh rate at all!

Long plea for help:I hope anybody can help - because 60Hz is the key to judder-free playback with this screen: while 23.97 Hz 1080p input is not supported, there is an inverse 3:2 pulldown mode for 60Hz input, the display removes the frame repeats, gets to 24/23.97 frames and displays at 72/71.91 Hz. Convoluted, but works great in practice.

Short version: I need 60 Hz, please help! Nod
Try disabling dynamic twinview.
toiva Wrote:Try disabling dynamic twinview.

Thanks!

I wasn't aware of that particular can of worms. Found some information about it in the forum, modified xorg.conf accordingly - and it works!
recluce Wrote:Thanks!

I wasn't aware of that particular can of worms. Found some information about it in the forum, modified xorg.conf accordingly - and it works!

Any chance you can post your new xorg.conf file? I think this is the solution I've been looking for...
gugahoi Wrote:Any chance you can post your new xorg.conf file? I think this is the solution I've been looking for...

No problem. Here it is, please note that I make no claims about it - except that it does work for me.

Code:
# nvidia-settings: X configuration file generated by nvidia-settings
# nvidia-settings:  version 270.29  (buildd@roseapple)  Fri Feb 25 14:43:24 UTC 2011


Section "ServerLayout"
    Identifier     "Layout0"
    Screen      0  "Screen0" 0 0
    InputDevice    "Keyboard0" "CoreKeyboard"
    InputDevice    "Mouse0" "CorePointer"
    Option         "Xinerama" "0"
EndSection

Section "Files"
EndSection

Section "InputDevice"

    # generated from default
    Identifier     "Mouse0"
    Driver         "mouse"
    Option         "Protocol" "auto"
    Option         "Device" "/dev/psaux"
    Option         "Emulate3Buttons" "no"
    Option         "ZAxisMapping" "4 5"
EndSection

Section "InputDevice"

    # generated from default
    Identifier     "Keyboard0"
    Driver         "kbd"
EndSection

Section "Monitor"

    # HorizSync source: edid, VertRefresh source: edid
    Identifier     "Monitor0"
    VendorName     "Unknown"
    ModelName      "Pioneer Electronic Corporation PDP-R05"
    HorizSync       15.0 - 46.0
    VertRefresh     49.0 - 61.0
    Option         "DPMS"
EndSection

Section "Device"
    Identifier     "Device0"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BoardName      "ION"
    Option  "NoLogo"              "true"
    Option  "DynamicTwinView"     "false"
    Option  "NoFlip"              "false"
    Option  "FlatPanelProperties" "Scaling = Native"
    Option  "ModeValidation"      "NoVesaModes, NoXServerModes"
    Option  "UseDisplayDevice"    "DFP-1"
    Option  "ModeDebug"           "true"
    Option  "HWCursor"            "false"
EndSection

Section "Screen"

# Removed Option "metamodes" "1280x720_60 +0+0"
    Identifier     "Screen0"
    Device         "Device0"
    Monitor        "Monitor0"
    DefaultDepth    24
#   Option         "TwinView" "0"
    Option         "metamodes" "1280x720_60_0 +0+0"
    SubSection     "Display"
    Modes       "1280x720_60_0" "1280x720_50"
        Depth       24
    EndSubSection
EndSection

Section "Extensions"
  Option "Composite" "Disable"
EndSection