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Date:	Wed, 26 Apr 2023 15:34:56 +0200 (CEST)
To:	"cygwin AT cygwin DOT com" <cygwin AT cygwin DOT com>
Message-ID:	<878643096.4481236.1682516096770@mail1.libero.it>
Subject:	problems with octave 8.2.0-1 and plotting
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From:	Fabio Rossi via Cygwin <cygwin AT cygwin DOT com>
Reply-To:	Fabio Rossi <rossi DOT f AT inwind DOT it>
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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

Thanks for the help,
Fabio

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