bugGNU Octave - Bugs: bug #48176, no prompt after plot commands in...

 
 

bug #48176: no prompt after plot commands in GUI using Nvidia OpenGL stack

Submitted by:  None
Submitted on:  Wed 08 Jun 2016 12:56:44 PM UTC  
 
Category: Plotting with OpenGLSeverity: 3 - Normal
Priority: 5 - NormalItem Group: Incorrect Result
Status: Need InfoAssigned to: None
Originator Name: winfried boxleitnerOriginator Email: -unavailable-
Open/Closed: OpenRelease: dev
Operating System: GNU/Linux

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Thu 09 Jun 2016 04:28:46 PM UTC, comment #3:

There are indeed many problems reported by people using the binary Nvidia video driver. I'll update the summary to reflect that for later searching, but not much else I can do to help you debug this than recommend that you try the nouveau driver, or use gnuplot which avoids OpenGL and any related problems.

If you want to help debug why Nvidia's OpenGL implementation causes so many problems with Octave, please feel free to dig into it.

Mike Miller <mtmiller>
Project Administrator
Thu 09 Jun 2016 08:57:36 AM UTC, comment #2:

== with respect to bug #46861 I tried 2 aproaches ==

this does not remove the problem

  • in the octave gui I issued the following commands (">>" is the gui prompt)
    • with default graphics toolkit ("qt"):

remark: the prompt comes back, even for figure(1), which does not have the inverthardcopy argument

    • with graphics toolkit "fltk":

remark: the empty line above ist the missing prompt!
although the promt does not come back, I can type blindly and the commands are executed as normal.

    • with graphics toolkit "gnuplot":

works as expected

  • the CLI-version (octave-cli) does not show this kind of problem

== hardware config ==
the two computers have both a nvidia card with the non-free nvidia-driver, however in different versions (debian-testing and debian-stable).

another hint might be the following:
connecting from computer 2 (without this problem) to copmputer 1 (which has the problem) via ssh and x2go (to get through the OpenGL stuff)
does not show this problem.

Anonymous
Wed 08 Jun 2016 05:13:21 PM UTC, comment #1:

Thanks for the bug report. Can you take a look at bug #46861 and see if the solution/workaround in that report works for you?

Does the command window show output up until a plot command is done? Can you try a different graphics_toolkit and report which of the 3 available shows which behavior? Can you say what video cards and drivers are used on the two machines, the older one that worked correctly and the newer one that shows this problem?

Mike Miller <mtmiller>
Project Administrator
Wed 08 Jun 2016 12:56:44 PM UTC, original submission:

OS: Linux photon 4.5.0-2-amd64 #1 SMP Debian 4.5.4-1 (2016-05-16) x86_64 GNU/Linux
octave version: 4.1.0+ (hg id: 21773:45871845a93c )
built with gnu compiler: 5.3.1

in both graphics toolkits fltk and qt, the prompt does NOT come back after a plot command. eg. plot([1,3,2]) opens a window for the plot, but the command window is inactive afterwards.

in the background the processes octave and octave-gui still run. if the workspace window is present in the gui, one can observe, that input is still processed. however NO output whatsoever is available.

the machine where this happens, is running under debian/testing. on an older machine, I compiled a nearly identical version from the dev-branch (4.1.0+, but perhaps a different hg-id) with gnu compiler version 4.9. on this machine this problem did NOT occur until now.

Anonymous

 

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    Follow 4 latest changes.

    Date Changed By Updated Field Previous Value => Replaced By
    Thu 09 Jun 2016 04:28:46 PM UTCmtmillerItem GroupNone=>Incorrect Result
      Summaryno prompt after plot command (gui-version only)=>no prompt after plot commands in GUI using Nvidia OpenGL stack
    Wed 08 Jun 2016 05:13:21 PM UTCmtmillerCategoryPlotting=>Plotting with OpenGL
      StatusNone=>Need Info

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