[Bug 59606] New: Xv vsync not working

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Sat Jan 19 15:44:20 PST 2013


          Priority: medium
            Bug ID: 59606
          Assignee: xorg-driver-ati at lists.x.org
           Summary: Xv vsync not working
        QA Contact: xorg-team at lists.x.org
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: mark7 at alumni.cmu.edu
          Hardware: Other
            Status: NEW
           Version: unspecified
         Component: Driver/Radeon
           Product: xorg

Created attachment 73312
  --> https://bugs.freedesktop.org/attachment.cgi?id=73312&action=edit

The Xv output produced by the radeon driver (6.14.4) in Debian wheezy appears
to be not vsynced on my Radeon HD 4670; tearing shows up.

xvattr says that XV_VSYNC is 1.  Using mplayer to play a video with its gl
output option is properly vsynced, as are other OpenGL-using apps.  When using
the xv output option, tearing occurs.

Attaching ~/.drirc (vsync enabled), output of xvattr and xvinfo (XV_VSYNC 1),
and Xorg.0.log.

Attaching make_flasher.sh, a script using mencoder and ImageMagick to generate
a flashing avi to make the effect particularly obvious.  Playing this avi with
"mplayer -vo xv build/output.avi" produces tearing, whereas "mplayer -vo gl
build/output.avi" does not.

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