How do I get 23.976Hz?

[lixe86]

Originally Posted by sfer

I worked around the xv issue by using gl output with -framedrop and -autosync n, n > 0 to prevent audio sync drift and weird occasional tearing at the top of the screen. I've not done through testing on the autosync parameter but a value of 2 seems to work fine.

All that's left to fix is getting the exact refresh rate on a secondary monitor. (Anyone?)

And where would I have to to this? I'm new to Linux =)

[sfer]

Originally Posted by lixe86

And where would I have to to this? I'm new to Linux =)

You said you used XBMC. I've never used it so I do not know how to change the settings on that. As for mplayer, the following magic spell does the trick for me:

mplayer -framedrop -autosync 2 -vo gl:yuv=4:lscale=1:cscale=1:force-pbo videofile

Better put those settings in ~/.mplayer/config so you don't need to give them explicitly every time.

Also, enable OpenGL sync to blank in nvidia-settings and use the __GL_SYNC_DISPLAY_DEVICE environment variable to define which monitor to sync on if you use more than one. I wonder why the syncing monitor can be chosen for xv but not gl in the gui.

[glusk]

It seems that no one answered the original question.

The modeline you created goes in the monitors section of xorg.conf. For example:

Section "Monitor"
# HorizSync source: xconfig, VertRefresh source: xconfig
Identifier "Monitor0"
VendorName "Unknown"
ModelName "SONY TV"
HorizSync 15.0 - 68.0
VertRefresh 23.0 - 61.0
Option "DPMS"
Modeline "1080p23" 74.176 1920 2558 2646 2750 1080 1084 1089 1125 -Hsync -Vsync
EndSection

And the "metamode" would then be:
Option "metamodes" "1080p23 +0+0"

In nvidia-settings, you should be able to see the name of your mode: 1080p23 in my case.
Hope this helps.