Calibre 4 on Linux does not start

[nekloth]

Hi

I just updated to version 4, and now I cannot run Calibre anymore, on my LInux (Debian) machine.

When accessing through menu, nothing happens.
When entering "calibre" in terminal, I have this:

qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found.
This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.

Available platform plugins are: eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, xcb.

Abandon

When I run the calibre-debug command, I have this:

calibre 4.0  embedded-python: True is64bit: True
Linux-4.19.0-6-amd64-x86_64-with-debian-10.1 Linux ('64bit', 'ELF')
('Linux', '4.19.0-6-amd64', '#1 SMP Debian 4.19.67-2+deb10u1 (2019-09-20)')
Python 2.7.16
Linux: ('debian', '10.1', '')
Interface language: fr
Successfully initialized third party plugins: Find Duplicates (1, 6, 3)
Turning on automatic hidpi scaling
qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found.
This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.

Available platform plugins are: eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, xcb.

Abandon

Any idea? (I would avoid to downgrade...)

Thanks.
Nek

[kovidgoyal]

Likely some missing system library or the other. Use QT_DEBUG_PLUGINS=1 and LD_DEBUG=libs to see what is missing.

[nekloth]

Great!

THanks to the options, I saw what was the missing library.

And, after referred to the post : https://www.mobileread.com/forums/sh...69#post3898769

I installed libxkbcommon-x11-0 and ... voilà!

Thanks a lot!
Nek