When I run "fuse" or "fuse-gtk" the fuse main window appears, but
there is no display of the Spectrum screen within it.  However, things
are working, even if not visible.  If I record the screen as a movie
(using fuse's menus) and replay the movie, things are recorded
OK. They're just not visible at the time.

The fust-gtk binary spews many Gtk warnings which may or may not be
relevant:

(fuse-gtk:20377): Gtk-WARNING **: 23:28:57.064: drawing failure for widget 'GtkWindow': invalid value for stride

(fuse-gtk:20377): Gtk-WARNING **: 23:28:57.081: drawing failure for widget 'GtkDrawingArea': invalid value for stride

(fuse-gtk:20377): Gtk-WARNING **: 23:28:57.081: drawing failure for widget 'GtkBox': invalid value for stride

(fuse-gtk:20377): Gtk-WARNING **: 23:28:57.081: drawing failure for widget 'GtkWindow': invalid value for stride

(fuse-gtk:20377): Gtk-WARNING **: 23:28:57.099: drawing failure for widget 'GtkDrawingArea': invalid value for stride

(fuse-gtk:20377): Gtk-WARNING **: 23:28:57.099: drawing failure for widget 'GtkBox': invalid value for stride

(fuse-gtk:20377): Gtk-WARNING **: 23:28:57.099: drawing failure for widget 'GtkWindow': invalid value for stride

(fuse-gtk:20377): Gtk-WARNING **: 23:28:57.115: drawing failure for widget 'GtkDrawingArea': invalid value for stride

(fuse-gtk:20377): Gtk-WARNING **: 23:28:57.115: drawing failure for widget 'GtkBox': invalid value for stride

(fuse-gtk:20377): Gtk-WARNING **: 23:28:57.115: drawing failure for widget 'GtkWindow': invalid value for stride

(fuse-gtk:20377): Gtk-WARNING **: 23:28:57.131: drawing failure for widget 'GtkDrawingArea': invalid value for stride

(fuse-gtk:20377): Gtk-WARNING **: 23:28:57.132: drawing failure for widget 'GtkBox': invalid value for stride

(fuse-gtk:20377): Gtk-WARNING **: 23:28:57.132: drawing failure for widget 'GtkWindow': invalid value for stride

(fuse-gtk:20377): Gtk-WARNING **: 23:28:57.148: drawing failure for widget 'GtkDrawingArea': invalid value for stride

(fuse-gtk:20377): Gtk-WARNING **: 23:28:57.148: drawing failure for widget 'GtkBox': invalid value for stride


This version of fuse-gtk running on this machine worked OK earlier
today.  I do not know what changed.  I didn't change any settings
AFAIK.  The behaviour seems unaffected by any choice of command-line
options.

Also fuse-sdl works OK (but its window is tiny).

I'm using a tiling window manager (i3) on a 3840x1600 display.   If I
enlarge the neighbouring window to increase the size of the (only)
other window by about 50%, the "fuse" window gets smaller (of course)
but then the usual display of the Spectrum's sceen appears!

Changing the width of the window seems to have no effect either way,
but the largest height it seems to work at is about 1134 pixels; if I
enlarge it above that the Spectrum display goes away again.

So it seems to me as if the the problem is that it doesn't like a tall
window (or perhaps it interacts adversely with the i3 window manager
in a way affected by window height).

Did you try removing ~/.fuserc ?

I cannot really tell from your description, but in general Fuse is
known to have problems with setting the right window size (there are
problems on Wayland because of that). I suspect that the tiling window
manager is trying to force Fuse to have a window size that it cannot
handle properly.

The problem is that Fuse does not support arbitrary window sizes. What
it does is provide a few scalers (double size, triple size) and tries
to force the window size to the closest available scaler. That works
fine with "small" resolutions (with the 3x scaler the height of
the Spectrum screen is 240x3 = 720), but that's too small for your
display.

There are patches to allow Fuse to scale the windows arbitrarily,
maybe that would solve your problem:

https://sourceforge.net/p/fuse-emulator/feature-requests/135/

But I need to check the status of that work and discuss it with the
Fuse development team.

Berto

I don't have one.

It would seem reasonable to just not fill the window with the emulated
screen in that case.

Thanks for responding!
James.

This should be fixed by https://sourceforge.net/p/fuse-emulator/fuse/ci/70456ce9730328f52345c03ac87704df9becef84/

Berto

We believe that the bug you reported is fixed in the latest version of
fuse-emulator, which is due to be installed in the Debian FTP archive.

A summary of the changes between this version and the previous one is
attached.

Thank you for reporting the bug, which will now be closed.  If you
have further comments please address them to 977326@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Alberto Garcia <berto@igalia.com> (supplier of updated fuse-emulator package)

(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmaster@ftp-master.debian.org)
Format: 1.8
Date: Mon, 22 Jun 2026 12:02:00 +0200
Source: fuse-emulator
Architecture: source
Version: 1.9.0+dfsg-1
Distribution: unstable
Urgency: medium
Maintainer: Alberto Garcia <berto@igalia.com>
Changed-By: Alberto Garcia <berto@igalia.com>
Closes: 977326
Changes:
 fuse-emulator (1.9.0+dfsg-1) unstable; urgency=medium
 .
   * New upstream release (Closes: #977326).
   * Refresh all patches.
   * debian/rules:
     - The 'sdl2' driver is now simply called 'sdl', so update all
       configure options.
     - Remove a few obsolete options when calling desktop-file-edit.
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