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[Daniel van Vugt <daniel.van.vugt@xxxxxxxxxxxxx>]

I wouldn't expect this crash on i915 but we are aware that GL clients
like Unity8 will be all-black right now. That's bug 1275398.

Once bug 1275398 is solved then this bug might go away. Last I heard, we should expect that to get fixed when Mesa 10.3.1 enters utopic:
https://launchpad.net/ubuntu/+source/mesa

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https://bugs.launchpad.net/bugs/1381721

Title:
  unity8 crashed with SIGSEGV in intelClear()

Status in Mir:
  New
Status in “mesa” package in Ubuntu:
  New
Status in “mir” package in Ubuntu:
  New
Status in “unity8” package in Ubuntu:
  New

Bug description:
  I tied the daliy image on my eeepc t91mt but it looks like it crashed on startup.
  I just see a black screen and the cursor.

  ProblemType: Crash
  DistroRelease: Ubuntu 14.10
  Package: unity8 8.00+14.10.20141013.2-0ubuntu1
  ProcVersionSignature: Ubuntu 3.16.0-22.29-generic 3.16.4
  Uname: Linux 3.16.0-22-generic i686
  ApportVersion: 2.14.7-0ubuntu6
  Architecture: i386
  CasperVersion: 1.345
  Date: Wed Oct 15 19:38:11 2014
  ExecutablePath: /usr/bin/unity8
  ExecutableTimestamp: 1413216480
  LiveMediaBuild: Ubuntu-Desktop-Next 14.10 "Utopic Unicorn" - Alpha i386 (20141015)
  ProcCmdline: unity8
  ProcCwd: /home/ubuntu-desktop-next
  ProcEnviron:
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SegvAnalysis:
   Segfault happened at: 0xb15f9921:	cmpl   $0x2,0x18(%eax)
   PC (0xb15f9921) ok
   source "$0x2" ok
   destination "0x18(%eax)" (0x00000018) not located in a known VMA region (needed writable region)!
   Stack memory exhausted (SP below stack segment)
  SegvReason: writing NULL VMA
  Signal: 11
  SourcePackage: unity8
  StacktraceTop:
   ?? () from /usr/lib/i386-linux-gnu/dri/i915_dri.so
   ?? () from /usr/lib/i386-linux-gnu/dri/i915_dri.so
   QSGBindable::clear(QFlags<QSGRenderer::ClearModeBit>) const () from /usr/lib/i386-linux-gnu/libQt5Quick.so.5
   QSGBatchRenderer::Renderer::renderBatches() () from /usr/lib/i386-linux-gnu/libQt5Quick.so.5
   QSGBatchRenderer::Renderer::render() () from /usr/lib/i386-linux-gnu/libQt5Quick.so.5
  SystemImageInfo:
   current build number: 0
   device name:
   channel: daily
   last update: Unknown
  Title: unity8 crashed with SIGSEGV in QSGBindable::clear()
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  upstart.unity8-dash.log:
   UbuntuClientIntegration: connection to Mir server failed. Check that a Mir server is
   running, and the correct socket is being used and is accessible. The shell may have
   rejected the incoming connection, so check its log file

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