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[Launchpad Bug Tracker <1350207@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package mir - 0.7.3+14.10.20140918.1-0ubuntu1

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mir (0.7.3+14.10.20140918.1-0ubuntu1) utopic; urgency=medium

  [ Andreas Pokorny ]
  * New upstream release 0.7.3 (https://launchpad.net/mir/+milestone/0.7.3)
    - Bug fixes
      . Fix constructor syntax errors (LP: #1369389)
      . server: Workaround for unresponsive clients causing the server to hang
        (LP: #1350207)
      . Relax strict dependencies of graphics drivers on an exact version
        of the libmirplatform2 package. It's blocking CI. (LP: #1370866)
      . Update cmake scripts to current version of gcovr.

  [ Ubuntu daily release ]
  * New rebuild forced
 -- Ubuntu daily release <ps-jenkins@xxxxxxxxxxxxxxxxxxx>   Thu, 18 Sep 2014 14:54:51 +0000

** Changed in: mir (Ubuntu)
       Status: Triaged => Fix Released

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https://bugs.launchpad.net/bugs/1350207

Title:
  A frozen client can hang the whole server

Status in Mir:
  Fix Committed
Status in Mir 0.6 series:
  Won't Fix
Status in Mir 0.7 series:
  Fix Committed
Status in “mir” package in Ubuntu:
  Fix Released

Bug description:
  A frozen Mir client can hang the whole server

  Test case:
    1. mir_demo_server_shell
    2. mir_demo_client_egltriangle
    3. In the egltriangle terminal window hit Ctrl+S to freeze the terminal output and the client.
    4. Resize the frozen egltriangle window lots (Alt+middlebutton+drag).
    5. Move the mouse around on the server.

  Expected: The mouse can still move.
  Observed: The mouse is frozen until the client is unfrozen (Ctrl+Q).

  The same happens if you stop the client process using normal Unix signals:
      killall -STOP mir_demo_client_egltriangle
  The server quickly becomes frozen, until the client is unfrozen with:
      killall -CONT mir_demo_client_egltriangle

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