Public bug reported:
it used to work like a month ago.
```
$ gdebi-gtk any.deb
(gdebi-gtk:280521): Gtk-CRITICAL **: 17:57:00.327: _gtk_css_lookup_resolve:
assertion '(((__extension__ ({ GTypeInstance *__inst = (GTypeInstance*)
((provider)); GType __t = ((_gtk_style_provider_private_get_type ())); gboolean
__r; if (!__inst) __r = (0); else if (__inst->g_class &&
__inst->g_class->g_type== __t) __r = (!(0)); else __r =
g_type_check_instance_is_a (__inst, __t); __r; }))))' failed
/usr/share/gdebi/GDebi/SimpleGtkbuilderApp.py:32: Warning:
g_object_set_data_full: assertion 'G_IS_OBJECT (object)' failed
self.builder.add_from_file(path)
(gdebi-gtk:280521): Gtk-ERROR **: 17:57:00.327: Can't create a GtkStyleContext
without a display connection
```
when i run gdebi-gtk it asks for sudo password in gui dialog. and then
fails with error above.
but if i run it with sudo - it works.
so maybe the issues is in that dialog.
Operating System: Kubuntu 26.04
KDE Plasma Version: 6.6.2
KDE Frameworks Version: 6.23.0
Qt Version: 6.10.2
Kernel Version: 6.19.0-9-generic (64-bit)
Graphics Platform: X11
ProblemType: Bug
DistroRelease: Ubuntu 26.04
Package: gdebi 0.9.5.8
ProcVersionSignature: Ubuntu 6.19.0-9.9-generic 6.19.5
Uname: Linux 6.19.0-9-generic x86_64
ApportVersion: 2.33.1-0ubuntu3
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: KDE
Date: Thu Mar 12 17:59:11 2026
InstallationDate: Installed on 2025-10-07 (156 days ago)
InstallationMedia: Ubuntu 24.04.3 LTS "Noble Numbat" - Release amd64
(20250805.1)
PackageArchitecture: all
SourcePackage: gdebi
UpgradeStatus: Upgraded to resolute on 2025-11-05 (127 days ago)
** Affects: gdebi (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug resolute
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https://bugs.launchpad.net/bugs/2144035
Title:
gdebi-gtk can't install package with "Can't create a GtkStyleContext
without a display connection"
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