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Haggy
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Aaaaaaah! Another one with modelines :-)
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Uhm my tv has 24,50,60Hz i'll try your xorg.conf and i'll report u what i've got.
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motd2k
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I created some test images to use to check for pixel clock issues. The image (the one relevant for your resolution) should appear smooth, with no horizontal or vertical banding visible within the sections.
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So I tried motd2k's xorg.conf and the problem is still there. However it did seem slightly better, getting more like 21fps (24fps content) now where i was only getting around 18fps before. When i get a chance im going to mess around with my own mode lines and some different refresh rates and see if that makes any difference.
EDIT: My tv now shows 720p/etc when xbmc changes resolution to 720p and such, and it did not before. Altho 24hz still does not show on the tv.
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Haggy
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OK - after some more tests i can fully confirm xnappo's and philter's experience. Starting up in 1080i is fine, system info is as shown above - hovering around 55fps. I can test every other 1080p mode (24, 50, 60) and it will also do fine and lock fps on selected refresh rate, BUT, after leaving xbmc and restarting fps drop down to 20-24 Hz on every selected mode. If i afterwards select 1080i again and restart xbmc, all modes can again be set to desired refresh rate, so i think we can narrow it down to:
1) Starting in anything other than 1080i will lock refresh at about 20-24 fps
2) Starting in 1080i and testing/selecting any other 1080p mode will do fine.
It seems the removal of those two flags at startup did not have any direct affect on this, but my video calibration was messed up afterwards.
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2009-03-14, 02:16
(This post was last modified: 2009-03-14, 02:19 by shassino.)
same result for me with both xorg.conf. 1080i in my htpc is choppy as 1080p.
I must use the windowed mode and then change to 1080p to get all running smooth.
tomorrow i'll try 1080i with old xorg.conf.
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vdpau svn 18470.
I'll try tomorrow on standard svn 18470. But i think is not necessary all my previous result r identical for linuxport and vdpau.
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I start with exec xbmc --standalone in my xsession, it starts fullscreen in the 1080i mode and plays 1080p content perfectly. If I start with 1080p @60hz, the choppyness and slow fps returns. If I start with 1080i (or any other resolution) and switch to 1080p, it plays perfectly.