[Octave-bug-tracker] [bug #55196] Locked screen halts program execution if your program throws up plots:

[Dave Goel]

URL:
  <https://savannah.gnu.org/bugs/?55196>

                 Summary: Locked screen halts program execution if your
program throws up plots:
                 Project: GNU Octave
            Submitted by: deego
            Submitted on: Mon 10 Dec 2018 09:17:13 PM UTC
                Category: Octave Function
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: None
                  Status: None
             Assigned to: None
         Originator Name: deego
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 4.2.2
        Operating System: GNU/Linux

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Details:

(I worked around the #55185 kbhit(1) bug reported earlier by not calling it in
the first place when locked. It seems that the same happens simply by
plotting:)

Next, it seems that the same problem happens with plot itself. plot also hangs
indefinitely if it is called when locked. [Debian stable, 4.2.2, qt toolkit,
xfce4]

Again, imagine a giant program that plots periodically, and that the screen
gets locked for security when idle. Unfortunately, that also pauses the
program itself!


function yyybug010(); 
  tic();
  while true; 
    pause(2);
    plot(rand(1,2), rand(1,2));  system("beep");     hold off; 
    disp(toc);
  endwhile 
endfunction 

## Octave__16:09:26_0025359_5> yyybug010
##  2.27368807792664
##  4.54688906669617
##  6.82589006423950
##  9.10250306129456
##  22.4111368656158  (screen was locked here. You stopped hearing beeps, your
program halted)
##  24.6930980682373
##  26.9730200767517
##  29.2445690631866
##  31.5159778594971





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