[bug #68072] Printing plots to pdflatex device fails with DRI3

Robert Jenssen <[email protected]> Fri, 20 Feb 2026 02:13:02 -0500 (EST)
Newsgroups	gmane.comp.gnu.octave.bugs
Message-ID	<[email protected]>
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URL:
  <https://savannah.gnu.org/bugs/?68072>

                 Summary: Printing plots to pdflatex device fails with DRI3
                   Group: GNU Octave
               Submitter: morgawr
               Submitted: Fri 20 Feb 2026 07:12:53 AM UTC
                Category: Plotting with OpenGL
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Unexpected Error or Warning
                  Status: None
             Assigned to: None
         Originator Name:
        Originator Email:
             Open/Closed: Open
         Discussion Lock: Unlocked
                 Release: 10.3.0
        Operating System: GNU/Linux
           Fixed Release: None
         Planned Release: None


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Follow-up Comments:


-------------------------------------------------------
Date: Fri 20 Feb 2026 07:12:53 AM UTC By: Robert Jenssen <morgawr>
An update to my Fedora 43 system has broken printing to the pdflatex device.
The following plot:

pkg load signal
[N0,D0]=butter(6,0.10);
nplot=512;
[H,wplot]=freqz(N0,D0,nplot);
subplot(211);
plot(wplot*0.5/pi,20*log10(abs(H)));
subplot(212);
plot(wplot*0.5/pi,(unwrap(arg(H)))/pi);
print("butter_response","-dpdflatex");
close

produces the error message:

warning: gl2ps_renderer::draw_axes: empty feedback buffer and/or nothing else
to print
warning: called from
    __opengl_print__ at line 209 column 7
    print at line 790 column 11


My fedora 43 kernel id is 6.18.10-200.fc43.x86_64. My mesa libraries are
version 25.3.5-1.fc43. A workaround is to disable DRI3 in
/etc/X11/xorg.conf.d/01-disable-dri3.conf:

Section "Device"
        Identifier  "Card0"
        Driver      "amdgpu"
        Option      "DRI"       "2"
        BusID       "PCI:1:0:0"
EndSection









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