1760001 - Crash on Wayland with 300% scaling on mutter (wl_surface@25: error 2: Buffer size (1373x1200) must be an integer multiple of the buffer_scale (3))

Status: RESOLVED WORKSFORME

(Core :: Widget: Gtk, defect)

Description

[Francois Guerraz]

On Gnome 42, Wayland, moving a FF window from one 1:1 to a 2:1 scale monitor makes it crash (see signature).

Comment 1

[Francois Guerraz]

My initial description is wrong, my scaling factor was 3.

On Gnome 42, Wayland, moving a FF window from one 1:1 to a 3:1 scale monitor makes it crash (see signature).

This doesn't happen if the scale is 2:1 or 4:1

Comment 2

[Emilio Cobos Álvarez [:emilio]]

I think that's a GTK bug, should happen with every GTK app: https://gitlab.gnome.org/GNOME/gtk/-/issues/4746

Comment 3

[Francois Guerraz]

That is correct.

Comment 4

[Francois Guerraz]

I patched gtk3/gtk4 with this MR, it fixes the other GTK applications crashing, but not Firefox which now crashes with

wl_surface@50: error 2: Buffer size (1373x1200) must be an integer multiple of the buffer_scale (3)
bp-c15a9204-2be5-4d8c-83b6-bee2c0220324

Feel free to re-open if you think it is a FF bug.

Comment 5

[Emilio Cobos Álvarez [:emilio]]

(In reply to Francois Guerraz from comment #4)

I patched gtk3/gtk4 with this MR, it fixes the other GTK applications crashing, but not Firefox which now crashes with

That is probably a Firefox bug, though we need to double-check where that size is coming from... Robert, fyi

Comment 6

[Robert Mader [:rmader]]

Landing https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2335 right now to make Mutter less strict again for a cycle (planning to reintroduce the strict behavior in 43 as it's demanded by the Wayland spec). This certainly looks like a FF bug as such a size can't be from a cursor texture, explaining why the GTK MR doesn't help.

Francois, can you post your about:support here so we get a better idea of your FF setup?

Comment 7

[Francois Guerraz]

Attachment: ff-about-support.json.xz

about:support file attached

Comment 8

[Robert Mader [:rmader]]

Thanks, nothing unusual there, so assuming default config.

This issue most likely gets triggered in either https://searchfox.org/mozilla-central/source/widget/gtk/MozContainerWayland.cpp#672-673 or https://searchfox.org/mozilla-central/source/widget/gtk/MozContainerWayland.cpp#150 - I think rather the later.

In any case, the next Mutter 42 update should downgrade the crash to a warning again, making a fix less urgent.

Comment 10

[marco.laverdiere]

Same thing happen for me when police scale is set to 1.20, FF 100.0 crashes upon resume from suspend (Wayland, GNOME 42.1/Fedora 36).

Comment 11

[marco.laverdiere]

On Fedora 36, this bug appears to be resolved with the latest mutter 42 upgrade.

Comment 12

[Marc Ponschab]

Maybe this has been fixed: https://bugzilla.mozilla.org/show_bug.cgi?id=1767916

On Fedora 36 this happens with Thunderbird as well. Please see my bug report at Fedora: https://bugzilla.redhat.com/show_bug.cgi?id=2084590

Comment 13

[BugBot [:suhaib / :marco/ :calixte]]

Closing because no crashes reported for 12 weeks.