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Date: Fri, 28 Apr 2023 08:49:36 +0200 (CEST)
To: Brian.Inglis@Shaw.ca, cygwin@cygwin.com,
        "Stromeko@nexgo.de" <Stromeko@nexgo.de>
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 <9e079b92-8214-ea8f-4f48-16e6859c9888@Shaw.ca>
 <876947632.45034.1682612153702@mail1.libero.it>
 <baf09e6c-ed50-e545-0078-8fe32d00908b@Shaw.ca>
Subject: Re: problems with octave 8.2.0-1 and plotting
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From: Fabio Rossi via Cygwin <cygwin@cygwin.com>
Reply-To: Fabio Rossi <rossi.f@inwind.it>
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Hello Brian,
thanks for your suggestions, eventually I solved the problem with Achim's hint of using opengl software rendering because the graphics card is not supporting all opengl requirements.

I have followed this guide:

https://x.cygwin.com/docs/ug/using-glx.html


Fabio


> Il 27/04/2023 18:30 Brian Inglis <brian.inglis@shaw.ca> ha scritto:
> 
>  
> Hi Fabio,
> 
> Are you running from a bash shell under a terminal started from the XWin Server 
> shortcut or X Applications Menu?
> 
> Those variables are defined in my shell:
> 
> 	$ echo $XDG_CURRENT_DESKTOP $XDG_MENU_PREFIX $XDG_RUNTIME_DIR
> 	X-Cygwin xwin- /run/user/######/
> 
> -- 
> Take care. Thanks, Brian Inglis              Calgary, Alberta, Canada
> 
> La perfection est atteinte                   Perfection is achieved
> non pas lorsqu'il n'y a plus rien à ajouter  not when there is no more to add
> mais lorsqu'il n'y a plus rien à retirer     but when there is no more to cut
>                                  -- Antoine de Saint-Exupéry
> 
> 
> On 2023-04-27 10:15, Fabio Rossi wrote:
> > Hello Brians,
> > thanks for the suggestions. I had already installed the xorg server and all the packages you mentioned. But nevertheless I get the errors reported in the original email, both if I start octave from the shell or by using the XDG menu which starts octave with the GUI.
> > 
> > In particular, in the second case I confirm all the opengl messages already reported and I get the following results in the octave command line:
> > 
> >>> getenv('XDG_CURRENT_DESKTOP')
> > ans = X-Cygwin
> >>> getenv('XDG_MENU_PREFIX')
> > ans = xwin-
> >>> getenv('XDG_RUNTIME_DIR')
> > ans =
> > 
> >>From the shell all of the previous variables are of course empty. With the past versions of octave it was plotting when run from the bash.
> > 
> > Thanks,
> > Fabio
> > 
> >> Il 27/04/2023 17:48 Brian Inglis <brian.inglis@shaw.ca> ha scritto:
> >>
> >>   
> >> Hi Fabio,
> >>
> >> Some packages include non-GUI or native GUI interfaces that do not require
> >> window system support.
> >>
> >> Others may dynamically support window systems if they are installed, or have
> >> separate executables for console or GUI, as octave does: octave and octave-cli.
> >>
> >> If you are using octave GUI, as it is linked against X window libraries, you
> >> need to install the X window system.
> >>
> >> If you install xinit, that will install the X Window server xorg-server, XDG
> >> components xdg-user-dirs, xwin-xdg-menu, X Window clients.
> >>
> >> If you then run it via the XWin Server Start Menu shortcut, it will define
> >> $XDG_CURRENT_DESKTOP, $XDG_MENU_PREFIX, and $XDG_RUNTIME_DIR.
> >>
> >> That should allow you to run octave GUI and display plot windows.
> >>
> >> -- 
> >> Take care. Thanks, Brian Inglis              Calgary, Alberta, Canada
> >>
> >> La perfection est atteinte                   Perfection is achieved
> >> non pas lorsqu'il n'y a plus rien à ajouter  not when there is no more to add
> >> mais lorsqu'il n'y a plus rien à retirer     but when there is no more to cut
> >>                                   -- Antoine de Saint-Exupéry
> >>
> >>
> >> On 2023-04-27 07:58, Fabio Rossi via Cygwin wrote:
> >>> I forgot to mention that the test machine is running Windows 10 Pro 64 bit with a ATI FirePro 3800 graphics card. On the same machine, octave built for Windows executes correctly the same command. I have observed the same behaviour also on other Windows machines running Win7 or other graphic adapters.
> >>>
> >>> Fabio
> >>>> Il 26/04/2023 15:34 Fabio Rossi <rossi.f@inwind.it> ha scritto:
> >>>>
> >>>>    
> >>>> I have installed latest test version of octave 8.2.0-1. When I try to plot using a simple command like "plot(1,1)" I get the following errors from the command line
> >>>>
> >>>> $ octave
> >>>> QStandardPaths: XDG_RUNTIME_DIR not set, defaulting to '/tmp/runtime-XXXX+user'
> >>>> GNU Octave, version 8.2.0
> >>>> Copyright (C) 1993-2023 The Octave Project Developers.
> >>>> This is free software; see the source code for copying conditions.
> >>>> There is ABSOLUTELY NO WARRANTY; not even for MERCHANTABILITY or
> >>>> FITNESS FOR A PARTICULAR PURPOSE.  For details, type 'warranty'.
> >>>>
> >>>> Octave was configured for "x86_64-pc-cygwin".
> >>>>
> >>>> Additional information about Octave is available at https://www.octave.org.
> >>>>
> >>>> Please contribute if you find this software useful.
> >>>> For more information, visit https://www.octave.org/get-involved.html
> >>>>
> >>>> Read https://www.octave.org/bugs.html to learn how to submit bug reports.
> >>>> For information about changes from previous versions, type 'news'.
> >>>>
> >>>> octave:1> plot(1,1)
> >>>> wglMakeCurrent error: 00000006
> >>>> wglMakeCurrent error: 00000006
> >>>> warning: opengl_renderer: Error 'invalid operation' (1282) occurred in init_gl_context
> >>>> warning: called from
> >>>>       __uiobject_split_args__ at line 61 column 9
> >>>>       uimenu at line 94 column 13
> >>>>       __add_default_menu__ at line 59 column 5
> >>>>       figure at line 97 column 5
> >>>>       newplot at line 120 column 10
> >>>>       plot at line 234 column 9
> >>>>
> >>>> warning: opengl_renderer: Error 'invalid operation' (1282) occurred drawing 'uimenu' object
> >>>> warning: called from
> >>>>       __uiobject_split_args__ at line 61 column 9
> >>>>       uimenu at line 94 column 13
> >>>>       __add_default_menu__ at line 59 column 5
> >>>>       figure at line 97 column 5
> >>>>       newplot at line 120 column 10
> >>>>       plot at line 234 column 9
> >>>>
> >>>> warning: opengl_renderer: Error 'invalid operation' (1282) occurred drawing 'figure' object
> >>>> warning: called from
> >>>>       __uiobject_split_args__ at line 61 column 9
> >>>>       uimenu at line 94 column 13
> >>>>       __add_default_menu__ at line 59 column 5
> >>>>       figure at line 97 column 5
> >>>>       newplot at line 120 column 10
> >>>>       plot at line 234 column 9
> >>>>
> >>>> wglMakeCurrent error: 00000006
> >>>> warning: opengl_renderer: Error 'invalid operation' (1282) occurred in init_gl_context
> >>>> warning: called from
> >>>>       __add_default_menu__ at line 165 column 3
> >>>>       figure at line 97 column 5
> >>>>       newplot at line 120 column 10
> >>>>       plot at line 234 column 9
> >>>>
> >>>> warning: opengl_renderer: Error 'invalid operation' (1282) occurred drawing 'uimenu' object
> >>>> warning: called from
> >>>>       __add_default_menu__ at line 165 column 3
> >>>>       figure at line 97 column 5
> >>>>       newplot at line 120 column 10
> >>>>       plot at line 234 column 9
> >>>>
> >>>> warning: opengl_renderer: Error 'invalid operation' (1282) occurred drawing 'uimenu' object
> >>>> warning: called from
> >>>>       __add_default_menu__ at line 165 column 3
> >>>>       figure at line 97 column 5
> >>>>       newplot at line 120 column 10
> >>>>       plot at line 234 column 9
> >>>>
> >>>> warning: opengl_renderer: Error 'invalid operation' (1282) occurred drawing 'uimenu' object
> >>>> warning: called from
> >>>>       __add_default_menu__ at line 165 column 3
> >>>>       figure at line 97 column 5
> >>>>       newplot at line 120 column 10
> >>>>       plot at line 234 column 9
> >>>>
> >>>> warning: opengl_renderer: Error 'invalid operation' (1282) occurred drawing 'uitoolbar' object
> >>>> warning: called from
> >>>>       __add_default_menu__ at line 165 column 3
> >>>>       figure at line 97 column 5
> >>>>       newplot at line 120 column 10
> >>>>       plot at line 234 column 9
> >>>>
> >>>> warning: opengl_renderer: Error 'invalid operation' (1282) occurred drawing 'figure' object
> >>>> warning: called from
> >>>>       __add_default_menu__ at line 165 column 3
> >>>>       figure at line 97 column 5
> >>>>       newplot at line 120 column 10
> >>>>       plot at line 234 column 9
> >>>>
> >>>> warning: opengl_renderer: Error 'invalid operation' (1282) occurred in init_gl_context
> >>>> warning: called from
> >>>>       __add_default_menu__ at line 165 column 3
> >>>>       figure at line 97 column 5
> >>>>       newplot at line 120 column 10
> >>>>       plot at line 234 column 9
> >>>>
> >>>> warning: opengl_renderer: Error 'invalid operation' (1282) occurred drawing 'uimenu' object
> >>>> warning: called from
> >>>>       __add_default_menu__ at line 165 column 3
> >>>>       figure at line 97 column 5
> >>>>       newplot at line 120 column 10
> >>>>       plot at line 234 column 9
> >>>>
> >>>> warning: opengl_renderer: Error 'invalid operation' (1282) occurred drawing 'uimenu' object
> >>>> warning: called from
> >>>>       __add_default_menu__ at line 165 column 3
> >>>>       figure at line 97 column 5
> >>>>       newplot at line 120 column 10
> >>>>       plot at line 234 column 9
> >>>>
> >>>> warning: opengl_renderer: Error 'invalid operation' (1282) occurred drawing 'uimenu' object
> >>>> warning: called from
> >>>>       __add_default_menu__ at line 165 column 3
> >>>>       figure at line 97 column 5
> >>>>       newplot at line 120 column 10
> >>>>       plot at line 234 column 9
> >>>>
> >>>> warning: opengl_renderer: Error 'invalid operation' (1282) occurred drawing 'uitoolbar' object
> >>>> warning: called from
> >>>>       __add_default_menu__ at line 165 column 3
> >>>>       figure at line 97 column 5
> >>>>       newplot at line 120 column 10
> >>>>       plot at line 234 column 9
> >>>>
> >>>> warning: opengl_renderer: Error 'invalid operation' (1282) occurred drawing 'figure' object
> >>>> warning: called from
> >>>>       __add_default_menu__ at line 165 column 3
> >>>>       figure at line 97 column 5
> >>>>       newplot at line 120 column 10
> >>>>       plot at line 234 column 9
> >>>>
> >>>> octave:2> wglMakeCurrent error: 00000006
> >>>> warning: opengl_renderer: Error 'invalid operation' (1282) occurred in init_gl_context
> >>>> warning: opengl_renderer: Error 'invalid operation' (1282) occurred drawing 'uimenu' object
> >>>> warning: opengl_renderer: Error 'invalid operation' (1282) occurred drawing 'uimenu' object
> >>>> warning: opengl_renderer: Error 'invalid operation' (1282) occurred drawing 'uimenu' object
> >>>> warning: opengl_renderer: Error 'invalid operation' (1282) occurred drawing 'uitoolbar' object
> >>>> warning: opengl_texture::create: the opengl library in use doesn't support images with either dimension larger than -367397472. Not rendering.
> >>>>
> >>>> The plot window is opened but becomes unresponsive, it is impossible to close it. The same happens if I start octave with the --gui option. The same happens also with latest stable 6.4.0-1 version

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