desktop-packages team mailing list archive

[Fabio <1018105@xxxxxxxxxxxxxxxxxx>]

Thank you for taking the time to report this bug.  We have tried to
recreate this on the latest release of Ubuntu and cannot reproduce it.
This bug is being marked as Invalid.  If you believe the problem to
still exist in the latest version of Ubuntu please comment on why that
is the case and change the bug status to NEW.

** Changed in: compiz
       Status: Confirmed => Invalid

** Changed in: compiz (Ubuntu)
       Status: Confirmed => Invalid

-- 
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to compiz in Ubuntu.
https://bugs.launchpad.net/bugs/1018105

Title:
  Tearing in Unity with Nvidia GTX670 (vsync failure)

Status in Compiz:
  Invalid
Status in compiz package in Ubuntu:
  Invalid

Bug description:
  Dragging windows around, playing video (vdpau, xv, gl) and OpenGL all
  suffer of tearing even if the application (or nvidia-settings) has
  Sync to VBlank (vsync) enabled. A tearing break consistently appears
  approximately on the same position, about 40 % from the top of the
  screen. This bug is seen with Nvidia proprietary drivers but googling
  suggests that it does not depend on the GPU or its driver but that it
  is actually a design issue with the compositing managers.

  Forcing the GPU into performance mode with nvidia-settings makes no
  difference (with my old GPU this would often solve tearing problems).
  Toggling full screen mode also doesn't appear to change anything.

  Symptoms:
  - Application-side (per window) vsync is working fine
     * Window dragging, video playback and OpenGL all behave the same
  - Full screen OpenGL works fine
     * Compositing bypassed?
  - Compositing fails: compiz attempts syncing but the timing is wrong
     * If it was not syncing at all, the tear lines would "move" randomly
     * The buffer swap should occur during vertical blanking, not during screen refresh

  Workarounds:
  - Disable compositing (use different WM)

  System:
  - Ubuntu 12.04 LTS
  - Nvidia drivers 295.49
  - MSI GTX670
  - Compiz 0.9.7.8
  - Unity 5.12.0

To manage notifications about this bug go to:
https://bugs.launchpad.net/compiz/+bug/1018105/+subscriptions