[Bug]: Main window not showing up

[filemon11]

⚠️ Before submitting, please verify the following: ⚠️

• This is a bug, not a question or a configuration issue.
• This issue is not already reported on Github (I've searched it).
• Nextcloud Server and Desktop Client are up to date. See Server Maintenance and Release Schedule and Desktop Releases for supported versions.
• I agree to follow Nextcloud's Code of Conduct

Bug description

The main window does not appear with client from the development PPA https://launchpad.net/~nextcloud-devs/+archive/ubuntu/client
Clicking on the bar icon shows a menu with four entries: Open main window, settings, Help, Close Nextcloud (translated from German). Clicking on Open main window does not have any effect.

Steps to reproduce

1. sudo add-apt-repository ppa:nextcloud-devs/client
2. sudo apt update
3. sudo apt install nemo-nextcloud
4. Click on the bar icon

Expected behavior

When clicking on Open main menu the main nextcloud window should show up.

Which files are affected by this bug

?

Operating system

Linux

Which version of the operating system you are running.

Budgie 10.9.1, Ubuntu 24.04.1 LTS

Package

Official Linux AppImage

Nextcloud Server version

29.0.5

Nextcloud Desktop Client version

3.14.0

Is this bug present after an update or on a fresh install?

Fresh desktop client install

Are you using the Nextcloud Server Encryption module?

Encryption is Enabled

Are you using an external user-backend?

• Default internal user-backend
• LDAP/ Active Directory
• SSO - SAML
• Other

Nextcloud Server logs

No response

Additional info

Client logs:
20240914_2235_nextcloud.log.0.txt

[mgallien]

@ivaradi you may want to check it

[UnderEu]

Same thing with MATE Desktop - Ubuntu 22.04

[PhMetzger]

Same here - Ubuntu 22.04.5 LTS
If it can help, I had to install qt6-qpa-plugins package to avoid crash at startup with 3.14

[MiZoG99]

Same on Linux Mint 22 Cinnamon.
"Open Main dialog" does not work.
though "Settings" is still accessible.

[StrangeNoises]

same on Ubuntu (vanilla) 24.04.1 (using wayland) nextcloud-desktop 3.14.0 installed from nextcloud-devs ppa. noted this upgrade last night also upgrading from depending on qt5 to qt6. Settings dialog works (and looks sharp in this fractional scaling mode), but main dialog doesn't open. I get a spinner for the mouse pointer for a bit when I try. Tried logout/login, made no difference.

[meonkeys]

I upgraded today, and after I tried to run nextcloud from the command line, I saw:

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

Aborted

Fix, as mentioned by @PhMetzger above, worked for me: sudo apt install qt6-qpa-plugins.

I'm using the desktop client from the nextcloud-devs ppa on Ubuntu 22.04 LTS 64-bit desktop.

[michnovka]

Same issue on Kubuntu 22.04, here is debug log:

superuser@superuser-X570S:~$ export QT_DEBUG_PLUGINS=1
superuser@superuser-X570S:~$ nextcloud
QFactoryLoader::QFactoryLoader() checking directory path "/usr/lib/x86_64-linux-gnu/qt6/plugins/platforms" ...
QFactoryLoader::QFactoryLoader() checking directory path "/usr/bin/platforms" ...
qt.qpa.plugin: Could not find the Qt platform plugin "xcb" in ""
This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.

Aborted (core dumped)

[michnovka]

P.S. a workaround seems to be to install

sudo apt install qt6-base-dev

Then it works

[ivaradi]

The package dependencies were not updated properly from Qt5 to Qt6, so several packages were possibly missing after installation. This is fixed now, and the current packages in the PPA should work properly.

[michnovka]

@ivaradi Can you please share for reference the version which is fixed? I see as latest 3.14.0-20240914.150754.d8fcb9273-1.0~jammy1 and this one is not

[ivaradi]

@michnovka the fixed version is 3.14.0-20240916.085658.d8fcb9273-1.0~jammy1

[StrangeNoises]

confirmed, that fixes it for me

[mwildam]

I can also confirm that 3.14.0-20240916.085658.d8fcb9273-1.0~jammy1 fixes the issue. Thanks for the quick solution.

[michnovka]

Yes, confirmed too

[mgallien]

@ivaradi thanks for the fixes and your packaging work.
closing the issue given the feedback

[StefInP]

@mgallien I have similar issue on W10 after upgrade to 3.14.0 from 3.13.4
A workaround is to close NC Desktop and reopen it.
Do I have to open a new issue ?

[mwildam]

@StefInP , reopen for me did not work, neither delete caches. Did you try starting "nextcloud" from the commandline? Errors are shown on the console. I definitely had this issue here which is solved as mentioned - with the latest update (from the nextcloud repository https://ppa.launchpadcontent.net/nextcloud-devs/client/ubuntu/).

[StefInP]

@mwildam I am on Windows, not on Linux, and I don't know what commandline to do (my skills are limited, I was just trying to report that this issue also exists on Windows)

[mwildam]

@StefInP , there should be no difference here - Open the terminal and just type "nextcloud" and enter.

[fsyamala]

Same problem with Windows 11 Pro 23H2 OS built 22631.4169.
Thank you.

[nyroDev]

The package dependencies were not updated properly from Qt5 to Qt6, so several packages were possibly missing after installation. This is fixed now, and the current packages in the PPA should work properly.

Is it possible to also update the downloadable appimage on nextcloud website please?
Or is there a link where to download the correct appimage?
I'm facing the exact same issue with missing glib.

[PhilippSchlesinger]

The package dependencies were not updated properly from Qt5 to Qt6, so several packages were possibly missing after installation. This is fixed now, and the current packages in the PPA should work properly.

Is it possible to also update the downloadable appimage on nextcloud website please? Or is there a link where to download the correct appimage? I'm facing the exact same issue with missing glib.

@nyroDev this is tracked in #7135 already.