[Octave-bug-tracker] [bug #57707] Octave GUI fails to start if it was last open on monitor 2 of a 2 monitor system

[James Watts]

URL:
  <https://savannah.gnu.org/bugs/?57707>

                 Summary: Octave GUI fails to start if it was last open on
monitor 2 of a 2 monitor system
                 Project: GNU Octave
            Submitted by: jpwatts
            Submitted on: Fri 31 Jan 2020 12:36:00 PM UTC
                Category: GUI
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Unexpected Error
                  Status: None
             Assigned to: None
         Originator Name: James Watts
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 5.1.0
        Operating System: Microsoft Windows

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Details:

I have a laptop running Windows 10 with Octave 5.1.0.  When it is docked, the
laptop has 2 monitors.

I ran the Octave GUI, displayed on Monitor 2 (the slave monitor) which is an
extended desktop from the Master monitor.  

When I tried to run Octave undocked, on the laptop screen, it wouldn't start. 
It created an icon on the taskbar then did nothing else.  When I hovered over
the icon with the mouse, it displayed an empty preview window.

I tried lots of things to resolve it: power cycle, reinstall, install 32bit
version, reinstall 64bit version and the same behaviour persisted.  The CLI
version ran fine throughout this.

I fixed it by opening Octave when docked, moving the window into the main
monitor, then closing again.  Now it opens fine on the laptop screen when not
docked.

I suspect that Octave stores its last screen position, but if the last screen
position was on a monitor that isn't there any more it just hangs and waits
for it.  (Rather than initialising to a default location).




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