glx: failed to create drisw screen; failed to load driver: zink

[eserte]

The test suite fails on my fedora smoker (with vnc setup as X11 DISPLAY, if this matters):

PERL_DL_NONLAZY=1 "/opt/perl-5.38.2t/bin/perl" "-MExtUtils::Command::MM" "-MTest::Harness" "-e" "undef *Test::Harness::Switches; test_harness(0, 'blib/lib', 'blib/arch')" t/*.t

#   Failed test 'simple lines plot succeeded'
#   at t/simple.t line 99.
#          got: 'PDL::Graphics::Gnuplot: ERROR: the gnuplot backend issued an error:
# 
# glx: failed to create drisw screen
# failed to load driver: zink
#  at /opt/perl-5.38.2t/lib/site_perl/5.38.2/PDL/Graphics/Gnuplot.pm line 7647.
# 	PDL::Graphics::Gnuplot::_checkpoint(PDL::Graphics::Gnuplot=HASH(0x289ce70), "main", HASH(0x3110040)) called at /opt/perl-5.38.2t/lib/site_perl/5.38.2/PDL/Graphics/Gnuplot.pm line 3289
# 	PDL::Graphics::Gnuplot::plot(undef, HASH(0x30f8a00), HASH(0x30ff660), PDL=SCALAR(0x30fefb8), PDL=SCALAR(0x28d7528)) called at /home/cpansand/.cpan/build/2024102423/PDL-Graphics-Simple-1.014-5/blib/lib/PDL/Graphics/Simple/Gnuplot.pm line 376
# 	PDL::Graphics::Simple::Gnuplot::plot(PDL::Graphics::Simple::Gnuplot=HASH(0x30ff618), HASH(0x30f85b0), ARRAY(0x30f8658)) called at /home/cpansand/.cpan/build/2024102423/PDL-Graphics-Simple-1.014-5/blib/lib/PDL/Graphics/Simple.pm line 1161
# 	PDL::Graphics::Simple::_convenience_plot("line", PDL=SCALAR(0x30fefb8), PDL=SCALAR(0x28d7528), HASH(0x310fff8)) called at /home/cpansand/.cpan/build/2024102423/PDL-Graphics-Simple-1.014-5/blib/lib/PDL/Graphics/Simple.pm line 1164
# 	PDL::Graphics::Simple::line(PDL=SCALAR(0x30fefb8), PDL=SCALAR(0x28d7528), HASH(0x310fff8)) called at t/simple.t line 98
# 	eval {...} called at t/simple.t line 98
# '
#     expected: ''
# module 'plplot' registration hash: {
#   'engine' => 'PDL::Graphics::PLplot',
#   'module' => 'PDL::Graphics::Simple::PLplot',
#   'msg' => 'Can\'t locate PDL/Graphics/PLplot.pm in @INC (you may need to install the PDL::Graphics::PLplot module) (@INC entries checked: /home/cpansand/.cpan/build/2024102423/PDL-Graphics-Simple-1.014-5/blib/lib /home/cpansand/.cpan/build/2024102423/PDL-Graphics-Simple-1.014-5/blib/arch /opt/perl-5.38.2t/lib/site_perl/5.38.2/x86_64-linux-thread-multi /opt/perl-5.38.2t/lib/site_perl/5.38.2 /opt/perl-5.38.2t/lib/5.38.2/x86_64-linux-thread-multi /opt/perl-5.38.2t/lib/5.38.2 .) at /home/cpansand/.cpan/build/2024102423/PDL-Graphics-Simple-1.014-5/blib/lib/PDL/Graphics/Simple/PLplot.pm line 53.
# ',
#   'ok' => 0,
#   'pgs_api_version' => '1.012',
#   'shortname' => 'plplot',
#   'synopsis' => 'PLplot (nice plotting, sloooow images)'
# }
# Skipping PDL::Graphics::Simple::PLplot: Can't locate PDL/Graphics/PLplot.pm in @INC (you may need to install the PDL::Graphics::PLplot module) (@INC entries checked: /home/cpansand/.cpan/build/2024102423/PDL-Graphics-Simple-1.014-5/blib/lib /home/cpansand/.cpan/build/2024102423/PDL-Graphics-Simple-1.014-5/blib/arch /opt/perl-5.38.2t/lib/site_perl/5.38.2/x86_64-linux-thread-multi /opt/perl-5.38.2t/lib/site_perl/5.38.2 /opt/perl-5.38.2t/lib/5.38.2/x86_64-linux-thread-multi /opt/perl-5.38.2t/lib/5.38.2 .) at /home/cpansand/.cpan/build/2024102423/PDL-Graphics-Simple-1.014-5/blib/lib/PDL/Graphics/Simple/PLplot.pm line 53.
# module 'gnuplot' registration hash: {
#   'engine' => 'PDL::Graphics::Gnuplot',
#   'itype' => 'qt',
#   'module' => 'PDL::Graphics::Simple::Gnuplot',
#   'ok' => 1,
#   'pgs_api_version' => '1.012',
#   'shortname' => 'gnuplot',
#   'synopsis' => 'Gnuplot 2D/3D (versatile; beautiful output)',
#   'valid_terms' => {
#     'cairolatex' => 1,
#     'canvas' => 1,
#     'cgm' => 1,
#     'dumb' => 1,
#     'dxf' => 1,
#     'emf' => 1,
#     'epscairo' => 1,
#     'epslatex' => 1,
#     'fig' => 1,
#     'gif' => 1,
#     'jpeg' => 1,
#     'pdfcairo' => 1,
#     'png' => 1,
#     'pngcairo' => 1,
#     'postscript' => 1,
#     'pslatex' => 1,
#     'pstex' => 1,
#     'qt' => 1,
#     'svg' => 1,
#     'texdraw' => 1,
#     'x11' => 1
#   }
# }
PDL::Graphics::Gnuplot: ERROR: the gnuplot backend issued an error:

glx: failed to create drisw screen
failed to load driver: zink
 at /opt/perl-5.38.2t/lib/site_perl/5.38.2/PDL/Graphics/Gnuplot.pm line 7647.
	PDL::Graphics::Gnuplot::_checkpoint(PDL::Graphics::Gnuplot=HASH(0x30f1bb0), "main", HASH(0x30f1ce8)) called at /opt/perl-5.38.2t/lib/site_perl/5.38.2/PDL/Graphics/Gnuplot.pm line 3289
	PDL::Graphics::Gnuplot::plot(undef, HASH(0x30f2a20), HASH(0x2fcb8b0), PDL=SCALAR(0x2f9d5a8), PDL=SCALAR(0x30132b0)) called at /home/cpansand/.cpan/build/2024102423/PDL-Graphics-Simple-1.014-5/blib/lib/PDL/Graphics/Simple/Gnuplot.pm line 376
	PDL::Graphics::Simple::Gnuplot::plot(PDL::Graphics::Simple::Gnuplot=HASH(0x30ff1e0), HASH(0x2fbd770), ARRAY(0x30ff810)) called at /home/cpansand/.cpan/build/2024102423/PDL-Graphics-Simple-1.014-5/blib/lib/PDL/Graphics/Simple.pm line 1084
	PDL::Graphics::Simple::plot(PDL::Graphics::Simple=HASH(0x2f05c58), "with", "polylines", PDL=SCALAR(0x2f9d0c8), PDL=SCALAR(0x3001800), HASH(0x2f9cde0)) called at t/simple.t line 174
# Tests were run but no plan was declared and done_testing() was not seen.
t/simple.t .. 
Dubious, test returned 1 (wstat 256, 0x100)
Failed 1/49 subtests 
	(less 15 skipped subtests: 33 okay)

[mohawk2]

Thanks for the report! This is actually a problem with PDL::Graphics::Gnuplot, hence the commit linked above. I've released a new version of that which should tolerate this new chattiness from gnuplot 6, as well as a new P:G:Simple which reports the versions of underlying graphics engines.

Could I ask you to install the new P:G:G, then try the new P:G:Simple against it?

While I think of it, do you have any thoughts on eserte/perl-tk#104 (comment) ?