Comment 68 for bug 755841

mr. Gedak: Are you sure that you are using the Intel drivers for your video-output? Because it sounds like you are experiencing a different issue to me and mr. Savin.
For example you are unable to capture the issue on a screenshot, and also it seems that your video playback does not tear when using mplayer's 'gl2' video-output. I experience video tearing regardless of output, e.g. when using mplayer's 'gl2' video-output the video still tears, and this tearing can be captured in a screenshot. Please verify your driver is indeed the intel driver, and that you can (or cannot) take a screenshot of the tearing. For example what is the output of "xvinfo | grep Adaptor"? Also please try to somehow see how many tearing lines there are (this is probably very difficult to impossible to do without a screenshot). As you can see in the screenshots provided by mr. Savin and me we both have multiple tearing lines.

Everyone: please carefully re-read comment #26 (and the addendum in comment #27). I should add to that that not only are these artifacts strange, but if indeed this was (just) an issue with the missing 'wait for scanline'-support that we should in fact not be able to capture the tearing in a screenshot because the tearing would be happing 'at a lower level'.

I've had (brief) contact with one of the developers on IRC ('ickle'), and he confirmed that this is indeed a different issue from the missing 'wait for scanline'-support. Unfortunately he did not know what could be the cause of this type of tearing either.