Panel option error when adding/removing monitors.

Distribution

22

Package version

Cinnamon 6.2.9

Graphics hardware in use

NVIDIA RTX 4080

Frequency

Always

Bug description

I can't open the panel under settings if I remove one of three monitors. I can when I reattach the third monitor.

I am getting this error message (below). Issue is similar to this one which was closed: https://github.com/linuxmint/cinnamon/issues/12378.

Using PAM module (python3-pam)
Loading Panel module
Traceback (most recent call last):
File "/usr/share/cinnamon/cinnamon-settings/cinnamon-settings.py", line 751, in button_press
self.side_view_nav(widget, None, category)
File "/usr/share/cinnamon/cinnamon-settings/cinnamon-settings.py", line 176, in side_view_nav
self.go_to_sidepage(sidePage, user_action=True)
File "/usr/share/cinnamon/cinnamon-settings/cinnamon-settings.py", line 185, in go_to_sidepage
sidePage.build()
File "/usr/share/cinnamon/cinnamon-settings/bin/SettingsWidgets.py", line 212, in build
self.module.on_module_selected()
File "/usr/share/cinnamon/cinnamon-settings/modules/cs_panel.py", line 231, in on_module_selected
self.on_panel_list_changed()
File "/usr/share/cinnamon/cinnamon-settings/modules/cs_panel.py", line 329, in on_panel_list_changed
if self.id_or_monitor_position_used(already_defined_panels, monitor_layout, panel_id, monitor_id, position):
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/share/cinnamon/cinnamon-settings/modules/cs_panel.py", line 297, in id_or_monitor_position_used
if monitor_layout[monitor_id].position_used(position):

IndexError: list index out of range
Error in sys.excepthook:
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/apport_python_hook.py", line 228, in partial_apport_excepthook
return apport_excepthook(binary, exc_type, exc_obj, exc_tb)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/apport_python_hook.py", line 144, in apport_excepthook
os.open(pr_filename, os.O_WRONLY | os.O_CREAT | os.O_EXCL, 0o640), "wb"
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
PermissionError: [Errno 13] Permission denied: '/var/crash/_usr_share_cinnamon_cinnamon-settings_cinnamon-settings.py.1000.crash'

Original exception was:
Traceback (most recent call last):
File "/usr/share/cinnamon/cinnamon-settings/cinnamon-settings.py", line 751, in button_press
self.side_view_nav(widget, None, category)
File "/usr/share/cinnamon/cinnamon-settings/cinnamon-settings.py", line 176, in side_view_nav
self.go_to_sidepage(sidePage, user_action=True)
File "/usr/share/cinnamon/cinnamon-settings/cinnamon-settings.py", line 185, in go_to_sidepage
sidePage.build()
File "/usr/share/cinnamon/cinnamon-settings/bin/SettingsWidgets.py", line 212, in build
self.module.on_module_selected()
File "/usr/share/cinnamon/cinnamon-settings/modules/cs_panel.py", line 231, in on_module_selected
self.on_panel_list_changed()
File "/usr/share/cinnamon/cinnamon-settings/modules/cs_panel.py", line 329, in on_panel_list_changed
if self.id_or_monitor_position_used(already_defined_panels, monitor_layout, panel_id, monitor_id, position):
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/share/cinnamon/cinnamon-settings/modules/cs_panel.py", line 297, in id_or_monitor_position_used
if monitor_layout[monitor_id].position_used(position):
~~~~~~~~~~~~~~^^^^^^^^^^^^
IndexError: list index out of range

### Steps to reproduce

open panel from settings or from terminal

### Expected behavior

It opens panel option gui

### Additional information

_No response_

Start in cinnamon-settings/modules/cs_panel.py, especially id_or_monitor_position_used and on_panel_list_changed, where the traceback shows the monitor layout index failure. Reproduce by opening the Panel settings with three monitors, then removing one. Done means the Panel options GUI opens without an IndexError in that configuration.