#17755: Plots are not shown in the notebook using server_pool option
-------------------------------------+-------------------------------------
       Reporter:  jdemeyer           |        Owner:
           Type:  defect             |       Status:  positive_review
       Priority:  critical           |    Milestone:  sage-6.5
      Component:  graphics           |   Resolution:
       Keywords:                     |    Merged in:
        Authors:  Jeroen Demeyer     |    Reviewers:  Andrey Novoseltsev
Report Upstream:  N/A                |  Work issues:
         Branch:                     |       Commit:
  u/jdemeyer/ticket/17755            |  e85da059b1f5ab5124f2855e7a1eff58e7ef98da
   Dependencies:                     |     Stopgaps:
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Description changed by jdemeyer:

Old description:



New description:

 Start a notebook server with
 {{{
 sage: notebook(server_pool=["guest@localhost"])
 }}}
 and then enter in a notebook cell
 {{{
 plot(sin(x))
 }}}

 In '''Sage 6.4.beta5''', this works as it should.

 In '''Sage 6.4.beta6''', this returns `None` and does not show the plot.

 In '''Sage 6.4.rc0''' and later, no plot is shown and the following error
 appears in the Sage session:
 {{{
 2015-02-09 10:23:17+0100 [HTTPChannel,0,127.0.0.1] Error copying file from
 worksheet process: [Errno 13] Permission denied:
 '/tmp/tmpJKDXnp/sage0.png'
 }}}

--

--
Ticket URL: <http://trac.sagemath.org/ticket/17755#comment:9>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica, 
and MATLAB

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