Apply patch by muktupavels that restores window list functionality by Photon89 · Pull Request #798 · shutter-project/shutter

Photon89 · 2026-01-25T15:21:52Z

See https://gitlab.gnome.org/GNOME/libwnck/-/issues/162#note_2338372

DarthGandalf · 2026-05-09T08:26:20Z

I see this in log:

 at bin/shutter line 9369.                                                                                                                                                                                                                                                        
        Shutter::App::fct_init_depend() called at bin/shutter line 200                                                                                                                                                                                                            
Subroutine lookup redefined at /home/somebody/shutter/share/shutter/resources/modules/Shutter/Draw/DrawingTool.pm line 28.                                                                                                                                                        
        require Shutter/Draw/DrawingTool.pm called at bin/shutter line 233                                                                                                                                                                                                        
Use of uninitialized value $wm_name in pattern match (m//) at bin/shutter line 8492, <DATA> line 19.                                                                                                                                                                              
        Shutter::App::fct_ret_workspace_menu("") called at bin/shutter line 608                                                                                                                                                                                                   
        Shutter::App::__ANON__(Wnck::Screen=HASH(0x5622a11ea260), Wnck::Workspace=HASH(0x5622a13a60e8)) called at /usr/lib64/perl5/vendor_perl/5.42/x86_64-linux/Glib/Object/Introspection.pm line 67                                                                             
        eval {...} called at /usr/lib64/perl5/vendor_perl/5.42/x86_64-linux/Glib/Object/Introspection.pm line 67                                                                                                                                                                  
        Glib::Object::Introspection::__ANON__() called at bin/shutter line 5680                                                                                                                                                                                                   
        Shutter::App::fct_update_gui() called at bin/shutter line 4098                                                                                                                                                                                                            
        Shutter::App::fct_try_init_tray() called at bin/shutter line 810                                                                                                                                                                                                          
        Shutter::App::STARTUP(Shutter::App=HASH(0x5622a11bbee8)) called at /usr/lib64/perl5/vendor_perl/5.42/x86_64-linux/Glib/Object/Introspection.pm line 67                                                                                                                    
        Glib::Object::Introspection::__ANON__(Shutter::App=HASH(0x5622a11bbee8)) called at bin/shutter line 11212                                                                                                                                                                 
*** unhandled exception in callback:                                                                                                                                                                                                                                              
***   Can't call method "reparent" on an undefined value at bin/shutter line 8569, <DATA> line 19.                                                                                                                                                                                
***     Shutter::App::fct_ret_workspace_menu("") called at bin/shutter line 608                                                                                                                                                                                                   
***     Shutter::App::__ANON__(Wnck::Screen=HASH(0x5622a11ea260), Wnck::Workspace=HASH(0x5622a13a60e8)) called at /usr/lib64/perl5/vendor_perl/5.42/x86_64-linux/Glib/Object/Introspection.pm line 67                                                                             
***     eval {...} called at /usr/lib64/perl5/vendor_perl/5.42/x86_64-linux/Glib/Object/Introspection.pm line 67                                                                                                                                                                  
***     Glib::Object::Introspection::__ANON__() called at bin/shutter line 5680                                                                                                                                                                                                   
***     Shutter::App::fct_update_gui() called at bin/shutter line 4098                                                                                                                                                                                                            
***     Shutter::App::fct_try_init_tray() called at bin/shutter line 810                                                                                                                                                                                                          
***     Shutter::App::STARTUP(Shutter::App=HASH(0x5622a11bbee8)) called at /usr/lib64/perl5/vendor_perl/5.42/x86_64-linux/Glib/Object/Introspection.pm line 67                                                                                                                    
***     Glib::Object::Introspection::__ANON__(Shutter::App=HASH(0x5622a11bbee8)) called at bin/shutter line 11212                                                                                                                                                                 
***  ignoring at /usr/lib64/perl5/vendor_perl/5.42/x86_64-linux/Glib/Object/Introspection.pm line 67, <DATA> line 19.                                                                                                                                                             
 at bin/shutter line 5680, <DATA> line 19.                                                                                                                                                                                                                                        
        Shutter::App::fct_update_gui() called at bin/shutter line 4098                                                                                                                                                                                                            
        Shutter::App::fct_try_init_tray() called at bin/shutter line 810                                                                                                                                                                                                          
        Shutter::App::STARTUP(Shutter::App=HASH(0x5622a11bbee8)) called at /usr/lib64/perl5/vendor_perl/5.42/x86_64-linux/Glib/Object/Introspection.pm line 67
        Glib::Object::Introspection::__ANON__(Shutter::App=HASH(0x5622a11bbee8)) called at bin/shutter line 11212

Photon89 · 2026-05-09T10:05:40Z

$wm_name is defined here. Are we sure that the proposed patch triggers the issue? It looks like a new issue to me, originally the whole $wnck_screen was undefined, now it just fails to get the window manager's name. Maybe we can catch it and set $wm_name to something like "not-compiz", if $wnck_screen->get_window_manager_name returns undefined?

Photon89 · 2026-05-09T10:08:53Z

@DarthGandalf Could you please test if the latest commit fixes the issue for you?

DarthGandalf · 2026-05-09T13:19:27Z

$ bin/shutter                                                                                                                                                                                                                                                                     
WARNING: gnome-web-photo is missing --> screenshots of websites will be disabled!                                                                                                                                                                                                 
                                                                                                                                                                                                                                                                                  
 at bin/shutter line 9352.                                                                                                                                                                                                                                                        
        Shutter::App::fct_init_depend() called at bin/shutter line 200                                                                                                                                                                                                            
WARNING: Image::ExifTool is missing --> writing Exif information will be disabled!                                                                                                                                                                                                
                                                                                                                                                                                                                                                                                  
 at bin/shutter line 9371.                                                                                                                                                                                                                                                        
        Shutter::App::fct_init_depend() called at bin/shutter line 200                                                                                                                                                                                                            
Subroutine lookup redefined at /home/somebody/shutter/share/shutter/resources/modules/Shutter/Draw/DrawingTool.pm line 28.                                                                                                                                                        
        require Shutter/Draw/DrawingTool.pm called at bin/shutter line 233                                                                                                                                                                                                        
Use of uninitialized value $wm_name in pattern match (m//) at bin/shutter line 8494, <DATA> line 19.                                                                                                                                                                              
        Shutter::App::fct_ret_workspace_menu("") called at bin/shutter line 608                                                                                                                                                                                                   
        Shutter::App::__ANON__(Wnck::Screen=HASH(0x55d604eca840), Wnck::Workspace=HASH(0x55d60536c688)) called at /usr/lib64/perl5/vendor_perl/5.42/x86_64-linux/Glib/Object/Introspection.pm line 67                                                                             
        eval {...} called at /usr/lib64/perl5/vendor_perl/5.42/x86_64-linux/Glib/Object/Introspection.pm line 67                                                                                                                                                                  
        Glib::Object::Introspection::__ANON__() called at bin/shutter line 5680                                                                                                                                                                                                   
        Shutter::App::fct_update_gui() called at bin/shutter line 4098                                                                                                                                                                                                            
        Shutter::App::fct_try_init_tray() called at bin/shutter line 810                                                                                                                                                                                                          
        Shutter::App::STARTUP(Shutter::App=HASH(0x55d604eb56f0)) called at /usr/lib64/perl5/vendor_perl/5.42/x86_64-linux/Glib/Object/Introspection.pm line 67                                                                                                                    
        Glib::Object::Introspection::__ANON__(Shutter::App=HASH(0x55d604eb56f0)) called at bin/shutter line 11214                                                                                                                                                                 
*** unhandled exception in callback:                                                                                                                                                                                                                                              
***   Can't call method "reparent" on an undefined value at bin/shutter line 8571, <DATA> line 19.                                                                                                                                                                                
***     Shutter::App::fct_ret_workspace_menu("") called at bin/shutter line 608                                                                                                                                                                                                   
***     Shutter::App::__ANON__(Wnck::Screen=HASH(0x55d604eca840), Wnck::Workspace=HASH(0x55d60536c688)) called at /usr/lib64/perl5/vendor_perl/5.42/x86_64-linux/Glib/Object/Introspection.pm line 67                                                                             
***     eval {...} called at /usr/lib64/perl5/vendor_perl/5.42/x86_64-linux/Glib/Object/Introspection.pm line 67                                                                                                                                                                  
***     Glib::Object::Introspection::__ANON__() called at bin/shutter line 5680                                                                                                                                                                                                   
***     Shutter::App::fct_update_gui() called at bin/shutter line 4098                                                                                                                                                                                                            
***     Shutter::App::fct_try_init_tray() called at bin/shutter line 810                                                                                                                                                                                                          
***     Shutter::App::STARTUP(Shutter::App=HASH(0x55d604eb56f0)) called at /usr/lib64/perl5/vendor_perl/5.42/x86_64-linux/Glib/Object/Introspection.pm line 67                                                                                                                    
***     Glib::Object::Introspection::__ANON__(Shutter::App=HASH(0x55d604eb56f0)) called at bin/shutter line 11214                                                                                                                                                                 
***  ignoring at /usr/lib64/perl5/vendor_perl/5.42/x86_64-linux/Glib/Object/Introspection.pm line 67, <DATA> line 19.                                                                                                                                                             
 at bin/shutter line 5680, <DATA> line 19.                                                                                                                                                                                                                                        
        Shutter::App::fct_update_gui() called at bin/shutter line 4098                                                                                                                                                                                                            
        Shutter::App::fct_try_init_tray() called at bin/shutter line 810
        Shutter::App::STARTUP(Shutter::App=HASH(0x55d604eb56f0)) called at /usr/lib64/perl5/vendor_perl/5.42/x86_64-linux/Glib/Object/Introspection.pm line 67
        Glib::Object::Introspection::__ANON__(Shutter::App=HASH(0x55d604eb56f0)) called at bin/shutter line 11214
*** unhandled exception in callback:
***   Can't call method "set_menu" on an undefined value at bin/shutter line 620, <DATA> line 19.
***     Shutter::App::__ANON__(Wnck::Screen=HASH(0x55d604eca840)) called at /usr/lib64/perl5/vendor_perl/5.42/x86_64-linux/Glib/Object/Introspection.pm line 67
***     eval {...} called at /usr/lib64/perl5/vendor_perl/5.42/x86_64-linux/Glib/Object/Introspection.pm line 67
***     Glib::Object::Introspection::__ANON__() called at bin/shutter line 5680
***     Shutter::App::fct_update_gui() called at bin/shutter line 4098
***     Shutter::App::fct_try_init_tray() called at bin/shutter line 810
***     Shutter::App::STARTUP(Shutter::App=HASH(0x55d604eb56f0)) called at /usr/lib64/perl5/vendor_perl/5.42/x86_64-linux/Glib/Object/Introspection.pm line 67
***     Glib::Object::Introspection::__ANON__(Shutter::App=HASH(0x55d604eb56f0)) called at bin/shutter line 11214
***  ignoring at /usr/lib64/perl5/vendor_perl/5.42/x86_64-linux/Glib/Object/Introspection.pm line 67, <DATA> line 19.
 at bin/shutter line 5680, <DATA> line 19.
        Shutter::App::fct_update_gui() called at bin/shutter line 4098
        Shutter::App::fct_try_init_tray() called at bin/shutter line 810
        Shutter::App::STARTUP(Shutter::App=HASH(0x55d604eb56f0)) called at /usr/lib64/perl5/vendor_perl/5.42/x86_64-linux/Glib/Object/Introspection.pm line 67
        Glib::Object::Introspection::__ANON__(Shutter::App=HASH(0x55d604eb56f0)) called at bin/shutter line 11214
Use of uninitialized value $wm_name in pattern match (m//) at bin/shutter line 8494, <DATA> line 19.
        Shutter::App::fct_ret_workspace_menu("") called at bin/shutter line 616
        Shutter::App::__ANON__(Wnck::Screen=HASH(0x55d604eca840), undef) called at /usr/lib64/perl5/vendor_perl/5.42/x86_64-linux/Glib/Object/Introspection.pm line 67
        eval {...} called at /usr/lib64/perl5/vendor_perl/5.42/x86_64-linux/Glib/Object/Introspection.pm line 67
        Glib::Object::Introspection::__ANON__() called at bin/shutter line 5680
        Shutter::App::fct_update_gui() called at bin/shutter line 4098
.......

Photon89 · 2026-05-09T15:33:08Z

@@ -8455,6 +8470,8 @@ sub STARTUP {
 		my $wm_name;
 		if ($wnck_screen->can('get_window_manager_name')) {
 			$wm_name = $wnck_screen->get_window_manager_name;


So, basically, $wnck_screen->can('get_window_manager_name') returns true, but $wnck_screen->get_window_manager_name is empty...

Photon89 · 2026-05-10T12:06:31Z

@DarthGandalf Now that 0.99.7 is out, there is no hurry, but if you have some spare time, please test the latest commit, I think, it should fix the issue. 😃

Apply patch by muktupavels that restores window list functionality

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Photon89 requested a review from DarthGandalf January 25, 2026 15:22

Photon89 linked an issue Jan 25, 2026 that may be closed by this pull request

Cannot open Shutter on Arch Linux #659

Open

vadi2 approved these changes May 3, 2026

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Photon89 mentioned this pull request May 9, 2026

Make Shutter read the xpm cursors x_hot and y_hot coordinates #813

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Photon89 commented May 9, 2026

View reviewed changes

Trying to fix undefined $wm_name

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Photon89 commented May 9, 2026

View reviewed changes

Try to fix uninitialized variables

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Apply patch by muktupavels that restores window list functionality#798

Apply patch by muktupavels that restores window list functionality#798
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