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#1 2025-09-25 08:26:59
- SRG
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- Registered: 2012-12-09
- Posts: 54
Many applications are "frozen" (QT ones ?) after GNOME 49 inst.
Hello,
I recently upgraded my arch (non-LTS) system. GNOME 49 (and, as i disovered only today, WAYLAND) were part of it.
Since then i have many issues when starting some applications : they are "frozen" (and never unfreeze), without any errors anywhere (as far as i can tell) - nothing in "journalctl", nothing in console (when i start the app through command line), etc.
It's just "frozen" / "unreactive" (endlessly - even after several minutes, it doesn't recover).
I believe most of them are "QT" apps :
- Sublime Text
- OpenSCAD (latest AppImage)
- Bambu Studio (3D slicer)
Also something very different : when launching a video in local with MPV, the video is working with a few seconds, and then after a few dozen of seconds, the whole MPV app also freezes.
(just in case) I do have some "qt*-wayland" packages ...
extra/qt5-wayland 5.15.17+kde+r57-1 (qt5) [installé]
extra/qt6-wayland 6.9.2-1 (qt6) [installé]
I forced-reinstall the NVIDIA driver, just in case ... but no changes.
Any ideas ?
-` sergio@moon
.o+` -----------
`ooo/ OS: Arch Linux x86_64
`+oooo: Kernel: 6.6.10-arch1-1
`+oooooo: Uptime: 14 hours, 36 mins
-+oooooo+: Packages: 2110 (pacman), 5 (flatpak)
`/:-:++oooo+: Shell: zsh 5.9
`/++++/+++++++: Resolution: 1920x1080
`/++++++++++++++: DE: GNOME 49.0
`/+++ooooooooooooo/` WM: Mutter
./ooosssso++osssssso+` WM Theme: Adwaita
.oossssso-````/ossssss+` Theme: Adwaita [GTK2/3]
-osssssso. :ssssssso. Icons: Adwaita [GTK2/3]
:osssssss/ osssso+++. Terminal: terminator
/ossssssss/ +ssssooo/- CPU: 11th Gen Intel i7-11700K (16) @ 4.900GHz
`/ossssso+/:- -:/+osssso+- GPU: NVIDIA T600
`+sso+:-` `.-/+oso: GPU: Intel RocketLake-S GT1 [UHD Graphics 750]
`++:. `-/+/ Memory: 14616MiB / 31832MiB
.` `/(yes it's an old kernel - i can't update, as there are "bugs" with my hardware in all recent ones)
Could the "them" be an issue ? (i see now it's GTK2/3, should it be a GTK4 theme ? Is there any one ?)
Last edited by SRG (2025-09-25 08:27:32)
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#2 2025-10-03 19:25:51
- SRG
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- Registered: 2012-12-09
- Posts: 54
Re: Many applications are "frozen" (QT ones ?) after GNOME 49 inst.
Since mutter-49.0-5, it's a bit better :
- SublimeText and OpenSCAD are not frozen anymore
- But Bambu Studio is still not working as expected
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#3 2025-10-03 19:59:45
- seth
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- From: Don't DM me only for attention
- Registered: 2012-09-03
- Posts: 68,722
Re: Many applications are "frozen" (QT ones ?) after GNOME 49 inst.
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#4 2025-10-03 20:09:19
- SRG
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- Registered: 2012-12-09
- Posts: 54
Re: Many applications are "frozen" (QT ones ?) after GNOME 49 inst.
Indeed.
GSK_RENDERER=gl GDK_BACKEND=x11 bambu-studiodefinitely helps now.
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#5 2025-10-03 20:41:11
- seth
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- From: Don't DM me only for attention
- Registered: 2012-09-03
- Posts: 68,722
Re: Many applications are "frozen" (QT ones ?) after GNOME 49 inst.
\o/
If there're no pending related issues and in general please always remember to mark resolved threads by editing your initial posts subject - so others will know that there's no task left, but maybe a solution to find.
Thanks.
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#6 2025-10-04 18:51:30
- SRG
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- Registered: 2012-12-09
- Posts: 54
Re: Many applications are "frozen" (QT ones ?) after GNOME 49 inst.
It "helps" = the app is not frozen anymore at start time (before it was frozen immediately at app' open time)
But it's still not 100% working (there are some sub-screens / panels that are still not working, and after some time some previously working panels start to be unresponsive). So still definitely not usable at this time in my context. Will also try different AppImage (Fedora, Ubutu, ...) just in my case (but without too much hope on that).
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#7 2025-10-04 19:32:18
- seth
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- Posts: 68,722
Re: Many applications are "frozen" (QT ones ?) after GNOME 49 inst.
Which of https://aur.archlinux.org/packages?O=0&K=bambu do you currently use?
All but https://aur.archlinux.org/packages/bambustudio-git seem to be fed out of appimages anyway?
You also might want to elaborate on "panels that are still not working" and to ensure that things still work in a random X11 session (eg. openbox) just to make sure this isn't because of some glib2 or gdk-pixbuf2 update.
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#8 2025-10-04 19:40:50
- SRG
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- Registered: 2012-12-09
- Posts: 54
Re: Many applications are "frozen" (QT ones ?) after GNOME 49 inst.
- I was not using the AUR packaging, but the directly downloaded AppImage. There are often several flavors prebuilt by Bambu on their Github (FEDORA, UBUNTU 20.04, UBUNTU 24.04
- Until GNOME 48, i was using that flavor : Bambu_Studio_ubuntu-24.04_PR-8184.AppImage , which was perfectly working under ARCH (non-LTS)
- When GNOME 49.x has landed, whole app was 100% frozen at start time (as discussed in first post)
- Since then (extra parameters + a few new upgrades, like mutter 49.0-5, maybe), it's a bit better, app is not frozen at start, sometime everything is working for a few moment (then some parts start to be unresponsive), sometimes some panels are directly not working when activated after start
Example of an "unactivated" / "not working" panels : 
(also, not every execution is the same, it's a bit random)
Many errors in APP console output :
(bambu-studio:563113): Gtk-CRITICAL **: 21:38:10.041: gtk_cell_layout_get_cells: assertion 'GTK_IS_CELL_LAYOUT (cell_layout)' failed
use_count = 4
ERROR: WebKit encountered an internal error. This is a WebKit bug.
/usr/src/debug/webkit2gtk-4.1/webkitgtk-2.50.0/Source/WebKit/WebProcess/Network/WebLoaderStrategy.cpp(618) : void WebKit::WebLoaderStrategy::internallyFailedLoadTimerFired()
(...)
(bambu-studio:563113): Gtk-CRITICAL **: 21:38:11.353: gtk_cell_layout_get_cells: assertion 'GTK_IS_CELL_LAYOUT (cell_layout)' failed
(...)(here launched with "GSK_RENDERER=gl GDK_BACKEND=x11 bambu-studio")
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#9 2025-10-05 07:59:52
- seth
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- Posts: 68,722
Re: Many applications are "frozen" (QT ones ?) after GNOME 49 inst.
Those are from https://archlinux.org/packages/extra/x86_64/webkit2gtk/ - have you tried bambu-studio in some random X11 session (I don't think anything there relates to gnome or wayland and would suggest to build the git version)
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