2013-01-19, 19:04
(2013-01-19, 14:30)fritsch Wrote: @tutu:
Could you test the cpu load when you switch to a refreshrate that is not 60hz and Vertical Blank Sync is always enabled in System -> Video Hardware?
This is a big issue on all my systems (E350, E450) - as long as VSync is disable, all play fine, but when you enable it with refresh rate != 60hz, you get a whole lot of drops.
You can test with this sample: https://dl.dropbox.com/u/55728161/hd-kabelbw.avi which is 1080i50.
Set your refreshrate to 50hz, enable Vertical Blank Sync (which should be set, as suggested by this howto) and try this file.
Thx for your help.
Update: I made some tests. It seems that there is a bug in syncing to 50hz with 13.1 - if you playback the 50p/50i content on 60hz it is "fine" in the sense of those drops are gone. For that issue, i recommend staying on 12.10 / 12.9Quantal. If you have to use 13.1 watch out for this issue.
How exactly should this affect stuff? I played on both 75 and 60 Hz and was smooth as silk. With Vsync on, Tearfree on (A8-5500 APU with built-in AMD Radeon HD 7560D, 13.1 driver, Debian Testing).
But i only have a 17" monitor connected. Is this supposed to be different on a Full HD LCD tv?