Calibre 7 crashes on Wayland

[legato]

I have Ubuntu Linux 22.04.3 LTS and Calibre 7.2, and I cannot open the app without it segfaulting almost immediately:

$ calibre
qt.qpa.theme.dbus: Session DBus not running.
qt.qpa.theme.dbus: Application will not react to setting changes.
 Check your DBus installation.
Segmentation fault (core dumped)

calibre[2846607]: segfault at 0 ip 00007fa182a9010b sp 00007ffc1fcf74e8 error 4 in libX11-xcb.so.1.0.0[7fa182a90000+1000] likely on CPU 17 (core 1, socket 0)
Code: 00 01 5d c3 0f 1f 00 c3 0f 1f 80 00 00 00 00 f3 0f 1e fa e9 77 ff ff ff 0f 1f 80 00 00 00 00 f3 0f 1e fa 48 8b 87 30 0a 00 00 <48> 8b 00 c3 90 f3 0f 1e fa 48 8b 87 30 0a 00 00 89 70 48 c3 00 f3

Searching the forums found me some debugging options. calibre-debug didn't show anything useful, so I tried this:

$ QT_DEBUG_PLUGINS=1 calibre
[...]
qt.core.plugin.factoryloader: Got keys from plugin meta data QList()
qt.core.plugin.factoryloader: checking directory path "/opt/calibre/bin/wayland-graphics-integration-client" ...
qt.core.library: "/opt/calibre/plugins/wayland-graphics-integration-client/libqt-plugin-wayland-egl.so" loaded library
Segmentation fault (core dumped)

Full output is attached if you need that.

My QT_QPA_PLATFORM variable is set to "wayland-egl". I tried launching it with

QT_QPA_PLATFORM=xcb calibre

and that worked. What can I do to make Calibre launch normally?

I have been using the binary downloads but I wouldn't mind switching to source.

[kovidgoyal]

Dont use wayland, its not ready.

[retiredbiker]

I recently got a new PC, a Thelio from System76, running Pop!_os 22.04 with AMD CPU and GPU. I tried Wayland, and it actually worked well enough to do some extensive book editing. Not well enough to run full time...but surprisingly well. Maybe one day soon?

[Quoth]

Originally Posted by retiredbiker

I recently got a new PC, a Thelio from System76, running Pop!_os 22.04 with AMD CPU and GPU. I tried Wayland, and it actually worked well enough to do some extensive book editing. Not well enough to run full time...but surprisingly well. Maybe one day soon?

I doubt it.

[kovidgoyal]

Originally Posted by retiredbiker

I recently got a new PC, a Thelio from System76, running Pop!_os 22.04 with AMD CPU and GPU. I tried Wayland, and it actually worked well enough to do some extensive book editing. Not well enough to run full time...but surprisingly well. Maybe one day soon?

Well if it works for whatever subset of software/workflows you use it for, I guess its ready *for you*. But in general, it has a loooooooong way to go and its design means it is particularly susceptible to politics which means it moves verrrrrrry slowly.