I added some traces to understand where the problem was coming from, and I
found this: when the problem occurs, the scrollToMousePos() method of the
magnifier can be called while the _xDelayed and _yDelayed variables are
undefined.
This is the case when you enable the magnifier in push mode with
I've tested on completely different system (CSU brand, processor (also
an Intel one though), graphic card (also an Intel one though), monitor,
display size and resolution) : same problem.
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I've set SHELL_DEBUG=all and G_MESSAGES_DEBUG=all, and got a stacktrace
I think connected with this bug. I hope it could help.
** Attachment added: "journal_stacktrace_20250305.txt"
https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1991001/+attachment/5862449/+files/journal_stacktrace
There is something else I've noticed about this bug, it only appears
when the push mouse tracking mode is selected before activating the
zoom. If I start in proportional or centered mouse tracking mode, the
switch to the push one, the freeze does not seem to occur.
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** Changed in: gnome-shell
Status: Unknown => New
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https://bugs.launchpad.net/bugs/1991001
Title:
Can't move (or see) the mouse cursor during desktop zoom
To manage notification
** Tags added: plucky
** Bug watch added: gitlab.gnome.org/GNOME/gnome-shell/-/issues #7854
https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/7854
** Also affects: gnome-shell via
https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/7854
Importance: Unknown
Status: Unknown
** Ta
gnome-shell[2267]: clutter_actor_allocate: assertion '!isnan
(real_allocation.x1) && !isnan (real_allocation.x2) && !isnan
(real_allocation.y1) && !isnan (real_allocation.y2)' failed
gnome-shell[2267]: Can't update stage views actor unnamed [ClutterActor] is on
because it needs an allocation.
no
I confirm this bug, my syslog is full of
gnome-shell[2847]: value "nan" of type 'gfloat' is invalid or out of
range for property 'x' of type 'gfloat'
when it happens.
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Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: gnome-shell (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1991001
Title:
