/usr/bin/compiz:11:unity::decoration::Window::Impl::ShadowTexture:unity::decoration::Window::Impl::Draw:unity::UnityWindow::glDraw:GLWindow::glDraw:WallWindow::glPaint

This bug was fixed in the package unity - 7.5.0+16.10.20160806-0ubuntu1

---------------
unity (7.5.0+16.10.20160806-0ubuntu1) yakkety; urgency=medium

  [ Marco Trevisan (Treviño) ]
  * DecoratedWindow: avoid deferencing an invalid shadow texture ptr,
    and split functions (LP: #1608464)
  * UnityWindowView: don't try to deference close_button_ if its' null
  * DecorationsForceQuitDialog: make CSS selectors work with gtk 3.20

  [ Andrea Azzarone, Marco Trevisan (Treviño) ]
  * DecoratedWindow: display unmaximize button if the window is
    vertically or horizontally maximized (LP: #1608480)

 -- Marco Trevisan (Treviño) <mail@3v1n0.net> Sat, 06 Aug 2016 16:25:58 +0000

Hello errors.ubuntu.com, or anyone else affected,

Accepted unity into xenial-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/unity/7.4.0+16.04.20160906-0ubuntu1 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, and change the tag from verification-needed to verification-done. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed. In either case, details of your testing will help us make a better decision.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance!

I checked the test case and I couldn't crash Unity.

This bug was fixed in the package unity - 7.4.0+16.04.20160906-0ubuntu1

---------------
unity (7.4.0+16.04.20160906-0ubuntu1) xenial; urgency=medium

  [ Marco Trevisan (Treviño) ]
  * SwitcherView: always disable animations when in lowgfx mode (LP:
    #1602784)

  [ Andrea Azzarone ]
  * When locked discard damages from windows below lockscreen. (LP:
    #1605180)
  * DecoratedWindow: display unmaximize button if the window is
    vertically or horizontally maximized (LP: #1608480)
  * Make sure the switcher detail view is properly scaled. Also scale
    the xy_offset to make sure the switcher and launcher do not overlap.
    (LP: #1605256)
  * Close session dialog on first ESC. (LP: #1521116)
  * Filter out scrolling envents for FilterExpanderLabel. (LP: #1604632)
  * Disable menu discovery animation if MenusDiscoveryDuration is 0.
    (LP: #942962)
  * Redraw fake decorations on window resize. (LP: #940470)
  * Use compiz::Window::serverNext instead of compiz::Window::next in
    IsWindowObscured as the latter can be outdated just after
    scale/spread terminates. (LP: #1614116)

  [ Marco Trevisan (Treviño) ]
  * DecoratedWindow: avoid deferencing an invalid shadow texture ptr,
    and split functions (LP: #1608464)
  * DecoratedWindow: display unmaximize button if the window is
    vertically or horizontally maximized (LP: #1608480)
  * DecorationsForceQuitDialog: make CSS selectors work with gtk 3.20
  * UserAuthenticatorPam: ensure pam_handle_ is null initialized and
    don't proceed if not set (LP: #1611668)
  * DecorationStyle: set css name for Gtk 3.20
  * OverlayRenderer: properly decorate launcher/panel when the launcher
    is at the bottom (LP: #1611694)
  * OverlayRenderer: don't use rotated textures, just rotate them at
    rendering time
  * SpreadWidgets: add container for spread filter and new spread
    decorations (LP: #1283314)
  * WindowButton: properly partially unmaximize a window when
    middle/left clicking in the restore button (LP: #1616136)

 -- Marco Trevisan (Treviño) <mail@3v1n0.net> Tue, 06 Sep 2016 23:17:39 +0000

The verification of the Stable Release Update for unity has completed successfully and the package has now been released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regressions.