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    <div class="moz-cite-prefix">Questions for VDPAU should probably go
      to either the Mesa list or the VDPAU list, libva is completely
      unrelated to this.<br>
      <br>
      Well is it possible that you just locked up the GPU? Please take a
      look at /sys/kernel/debug/dri/0/radeon_fence_info and dmesg.<br>
      <br>
      Regards,<br>
      Christian.<br>
      <br>
      Am 18.02.2016 um 23:43 schrieb Vasilis Liaskovitis:<br>
    </div>
    <blockquote
cite="mid:CA+1DO-zu2aNsoK2-esPKuwKvmGHZA6sh2qkqQzYZhzVRpW+-jg@mail.gmail.com"
      type="cite">
      <div dir="ltr">
        <div>Hi,<br>
          <br>
          I have an application that renders by binding libva/vdpau
          surfaces onto GLX pixmaps.Playback works ok for a while, but
          than the application displays black frames after a few minutes
          of operation (always reproducible within 1-15 minutes
          usually).<br>
           <br>
        </div>
        When this happens, gdb backtrace shows that the current call to
        vdpau_PutSurface (done from the application) never returns. Are
        there any obious reasons that would lead to vaPutSurface to
        never return (e.g. some deadlock in libva/vdpau?)<br>
        <br>
        Using vdpau driver on radeon.<br>
        <br>
        <div>Backtrace of thread waiting in vaPutSurface():<br>
           <br>
          Thread 8 (Thread 0x7fca1f778700 (LWP 3580)):<br>
          #0  0x00007fca55a3e12d in poll () at
          ../sysdeps/unix/syscall-template.S:81<br>
          #1  0x00007fca5316b262 in poll (__timeout=-1, __nfds=1,
          __fds=0x7fca1f776a20) at<br>
              /usr/include/x86_64-linux-gnu/bits/poll2.h:46<br>
          #2  _xcb_conn_wait (c=c@entry=0x2885500,
          cond=cond@entry=0x7fca1f776b40,<br>
                  vector=vector@entry=0x0, count=count@entry=0x0) at
          xcb_conn.c:459<br>
          #3  0x00007fca5316cadf in wait_for_reply (c=c@entry=0x2885500,
          request=31161,<br>
                  e=e@entry=0x0) at xcb_in.c:491<br>
          #4  0x00007fca5316cbf2 in xcb_wait_for_reply (c=0x2885500,
          request=31161, e=0x0)<br>
          at xcb_in.c:521<br>
          #5  0x00007fca419b8004 in vl_dri2_get_flush_reply
          (scrn=0x2653600) at<br>
          ../../../../../src/gallium/auxiliary/vl/vl_winsys_dri.c:110<br>
          #6  0x00007fca419b8101 in vl_dri2_destroy_drawable
          (scrn=0x2653600) at<br>
          ../../../../../src/gallium/auxiliary/vl/vl_winsys_dri.c:153<br>
          #7  0x00007fca419b8185 in vl_dri2_set_drawable
          (scrn=0x2653600,<br>
                  drawable=71303307) at<br>
          ../../../../../src/gallium/auxiliary/vl/vl_winsys_dri.c:176<br>
          #8  0x00007fca419b82c8 in vl_dri2_screen_texture_from_drawable<br>
          (vscreen=0x2653600, drawable=0x440008b) at<br>
          ../../../../../src/gallium/auxiliary/vl/vl_winsys_dri.c:193<br>
          #9  0x00007fca419b61ab in vlVdpPresentationQueueDisplay<br>
          (presentation_queue=<optimized out>, surface=5,
          clip_width=1280,<br>
           clip_height=720, earliest_presentation_time=0)<br>
                  at
          ../../../../../../src/gallium/state_trackers/vdpau/presentation.c:234<br>
          #10 0x00007fca423ca6a3 in flip_surface_unlocked<br>
                  (driver_data=driver_data@entry=0x2650c90,<br>
                   obj_output=obj_output@entry=0x291a2b0) at
          vdpau_video_x11.c:583<br>
          #11 0x00007fca423cb2e1 in queue_surface_unlocked
          (obj_surface=<optimized out>,<br>
                  obj_output=0x291a2b0, driver_data=0x2650c90) at
          vdpau_video_x11.c:610<br>
          #12 put_surface_unlocked (flags=32,
          target_rect=0x7fca1f776f90,<br>
                  source_rect=0x7fca1f776f80, obj_output=0x291a2b0,
          obj_surface=0x2919bf0,<br>
                  driver_data=0x2650c90) at vdpau_video_x11.c:689<br>
          #13 put_surface (driver_data=driver_data@entry=0x2650c90,<br>
                  surface=surface@entry=50331655,
          drawable=drawable@entry=71303307,<br>
                  drawable_width=<optimized out>,
          drawable_height=720,<br>
                      source_rect=source_rect@entry=0x7fca1f776f80,<br>
                      target_rect=target_rect@entry=0x7fca1f776f90,
          flags=flags@entry=32)<br>
          at vdpau_video_x11.c:755<br>
          #14 0x00007fca423cb59c in vdpau_PutSurface (ctx=<optimized
          out>,<br>
                  surface=50331655, draw=0x440008b, srcx=<optimized
          out>, srcy=<optimized<br>
                  out>, srcw=<optimized out>, srch=720,
          destx=0, desty=0,<br>
                      destw=1280, desth=720, cliprects=0x0,
          number_cliprects=0, flags=32)<br>
          at vdpau_video_x11.c:808<br>
          #15 0x000000000040eed2 in on_client_draw (glsink=<optimized
          out>, buf=<optimized<br>
                  out>, data=0x626d40 <video>) at video.c:619<br>
          <br>
          <br>
          Full backtrace at:<a moz-do-not-send="true"
            href="http://pastebin.com/RZqmUkMY">http://pastebin.com/RZqmUkMY</a><br>
          <br>
          Using vdpau driver on radeon and:<br>
          <br>
          libX11 1.6.2<br>
          libxcb 1.11 or 1.10<br>
          mesa 11.0<br>
          <br>
          <br>
        </div>
        <div>thank you for any help,<br>
          <br>
        </div>
        <div>- Vasilis<br>
        </div>
      </div>
      <br>
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      <br>
      <pre wrap="">_______________________________________________
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</pre>
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