Bug 2150495

Summary:	3.24.35 breaks mouse pointer: Unable to load left_ptr from the cursor theme
Product:	[Fedora] Fedora	Reporter:	Martin Pitt <mpitt>
Component:	gtk3	Assignee:	Matthias Clasen <mclasen>
Status:	CLOSED WONTFIX	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	37	CC:	gnome-sig, mclasen
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Last Closed:	2022-12-03 12:52:39 UTC	Type:	Bug
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Description Martin Pitt 2022-12-03 12:45:45 UTC

Description of problem: A recent system update broke the mouse pointer for me. In GTK programs such as my terminal or Firefox, the mouse cursor seems to keep the most recent shape that it had before it entered the window. E.g. the "left right arrow" from the window borders (for resizing), or it's entirely hidden (because terminals do that while typing).

I bisected through the updated packages, and found that it works again when I downgrade gtk3 from gtk3-3.24.35-1.fc37.x86_64 to gtk3-3.24.34-2.fc37.x86_64.

Version-Release number of selected component (if applicable):

gtk3-3.24.35-1.fc37.x86_64

How reproducible: Always

Steps to Reproduce:
1. Start a GTK program (terminal), and move the mouse cursor into it

Actual results: Mouse cursor is hidden or wrong

Expected results: Mouse cursor should be the usual arrow pointing to the upper left for firefox, or the 'I' shaped bar for terminal.

Additional info: When starting the terminal from alacritty (which does not use GTK), I first see

Gdk-Message: 13:40:34.438: Unable to load text from the cursor theme
Gdk-Message: 13:40:34.438: Unable to load default from the cursor theme
Gdk-Message: 13:40:34.438: Unable to load pointer from the cursor theme

and then a neverending stream of

Gdk-Message: 13:40:35.448: Unable to load left_ptr from the cursor theme

which sounds very related.

I don't have much of GDK/GTK config. There's ./.config/gtk-3.0/bookmarks, and no config file like "*gdk*" in my home dir.

Note that I am *not* running GNOME, but a very simple sway+waybar. The only other process that loads libgtk is xdg-desktop-portal-gtk.

Comment 1 Martin Pitt 2022-12-03 12:52:39 UTC

Then again, when I run `HOME=/tmp/x firefox` or `HOME=/tmp/x simple-term` (with a nonexisting /tmp/x/) it works. So this does smell like some local config issue.

My current settings (which I've been dragging around for many many years, I even still see some Ubuntu config there..)

$ dconf dump /org/gnome/desktop/interface/
[/]
cursor-size=24
cursor-theme='DMZ-White'
enable-animations=true
gtk-im-module='gtk-im-context-simple'
gtk-theme='Radiance'
icon-theme='ubuntu-mono-light'
scaling-factor=uint32 1
text-scaling-factor=1.0
toolkit-accessibility=false


And indeed a `dconf reset -f /org/gnome/desktop/interface/` seems to fix things. Seems like the "DMZ-White" theme was dropped, or something like that?

Anyway, this is probably too obscure at this point, so closing. Sorry for the noise!