[Octave-bug-tracker] [bug #56570] unable to plot with OpenGL on Raspberry Pi 4 (4GB, Buster)

[Freed-Wu]

Follow-up Comment #7, bug #56570 (project octave):

i met the same warning. before i update qt to 5.14.1-r2, it can work normally.
now if i

graphics_toolkit qt
plot(1:10)


it will


warning: opengl_renderer: Error 'invalid enumerant' (1280) occurred in
init_gl_context
warning: called from
    uimenu at line 89 column 7
    __add_default_menu__ at line 36 column 9
    figure at line 92 column 5
    newplot at line 117 column 10
    plot at line 222 column 9
warning: opengl_renderer: Error 'invalid enumerant' (1280) occurred in
init_gl_context
warning: called from
    uimenu at line 89 column 7
    __add_default_menu__ at line 84 column 5
    figure at line 92 column 5
    newplot at line 117 column 10
    plot at line 222 column 9
warning: opengl_renderer: Error 'invalid enumerant' (1280) occurred in
init_gl_context
warning: called from
    axes at line 102 column 5
    newplot at line 158 column 10
    plot at line 222 column 9
warning: opengl_renderer: Error 'invalid operation' (1282) occurred drawing
'text' object
warning: called from
    ancestor at line 64 column 9
    axes at line 102 column 5
    newplot at line 158 column 10
    plot at line 222 column 9
warning: opengl_renderer: Error 'invalid enumerant' (1280) occurred in
init_gl_context
warning: called from
    __plt__ at line 87 column 28
    plot at line 223 column 10
warning: opengl_renderer: Error 'invalid operation' (1282) occurred drawing
'text' object
warning: called from
    __pltopt__
    __plt__ at line 87 column 28
    plot at line 223 column 10
libEGL warning: FIXME: egl/x11 doesn't support front buffer rendering.


just when use qt, the error exists. not gnuplot and fltk.
OS: gentoo linux 5.4
qt: 5.14-r2
octave: 5.2.0

how should i do?

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