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[Bug 1501927] Re: [android] various crashes when unplugging external display on a nested configuration

To: touch-packages@xxxxxxxxxxxxxxxxxxx
From: Daniel van Vugt <daniel.van.vugt@xxxxxxxxxxxxx>
Date: Fri, 09 Oct 2015 02:38:19 -0000
Reply-to: Bug 1501927 <1501927@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

** Also affects: mir (Ubuntu)
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1501927

Title:
  [android] various crashes when unplugging external display on a nested
  configuration

Status in Mir:
  Fix Committed
Status in mir package in Ubuntu:
  New

Bug description:
  With mir 0.16 and lp:mir start a nested server

  sudo mir_demo_server --arw-file --display-config sidebyside
  mir_demo_server --host-socket /tmp/mir_socket --display-config sidebyside

  Hotplug an external monitor and unplug it.

  You'll get crashes/aborts at various places:

  1. pure virtual method call aborts
  2. SEGFAULT trying to access display_buffer in mc::DefaultDisplayBufferCompositor::composite
  3. SEGFAULT in mrg::RenderingTarget::~RenderingTarget() trying to access buffer
  4. other but all points to accessing dead objects.

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