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[Launchpad Bug Tracker <1289021@xxxxxxxxxxxxxxxxxx>]

Status changed to 'Confirmed' because the bug affects multiple users.

** Changed in: unity (Ubuntu)
       Status: New => Confirmed

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https://bugs.launchpad.net/bugs/1289021

Title:
  compiz crashed with SIGSEGV in GLWindow::glDrawTexture()

Status in “unity” package in Ubuntu:
  Confirmed

Bug description:
  This occurred when sliding the UI scale slider in Display properties
  below 1.

  ProblemType: Crash
  DistroRelease: Ubuntu 14.04
  Package: unity 7.1.2+14.04.20140305-0ubuntu1
  ProcVersionSignature: Ubuntu 3.13.0-16.36-generic 3.13.5
  Uname: Linux 3.13.0-16-generic x86_64
  ApportVersion: 2.13.2-0ubuntu5
  Architecture: amd64
  CrashCounter: 1
  CurrentDesktop: Unity
  Date: Thu Mar  6 17:00:23 2014
  ExecutablePath: /usr/bin/compiz
  ProcCmdline: compiz
  ProcEnviron:
   LANGUAGE=en_US
   PATH=(custom, user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SegvAnalysis:
   Segfault happened at: 0x7fc171236302 <_ZN8GLWindow13glDrawTextureEP9GLTextureRK8GLMatrixRK19GLWindowPaintAttribj+178>:	mov    (%rbx),%rax
   PC (0x7fc171236302) ok
   source "(%rbx)" (0x00000000) not located in a known VMA region (needed readable region)!
   destination "%rax" ok
  SegvReason: reading NULL VMA
  Signal: 11
  SourcePackage: unity
  StacktraceTop:
   GLWindow::glDrawTexture(GLTexture*, GLMatrix const&, GLWindowPaintAttrib const&, unsigned int) () from /usr/lib/compiz/libopengl.so
   unity::decoration::Window::Impl::Draw(GLMatrix const&, GLWindowPaintAttrib const&, CompRegion const&, unsigned int) () from /usr/lib/compiz/libunityshell.so
   unity::UnityWindow::glDraw(GLMatrix const&, GLWindowPaintAttrib const&, CompRegion const&, unsigned int) () from /usr/lib/compiz/libunityshell.so
   GLWindow::glDraw(GLMatrix const&, GLWindowPaintAttrib const&, CompRegion const&, unsigned int) () from /usr/lib/compiz/libopengl.so
   WallWindow::glPaint(GLWindowPaintAttrib const&, GLMatrix const&, CompRegion const&, unsigned int) () from /usr/lib/compiz/libwall.so
  Title: compiz crashed with SIGSEGV in GLWindow::glDrawTexture()
  UpgradeStatus: Upgraded to trusty on 2014-01-10 (55 days ago)
  UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare vboxusers

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