As of today update CANNOT start the desktop

[gericom]

 This application failed to start because it could not find or load the Qt platform plugin "xcb".
Available plugins are linuxfb, minimal, Wayland...

It is impossible to start the desktop, even sddm.

[devil]

You are probably missing libx11-xcb1.


greetz
devil

[gericom]

Nope, it is installed. Sometimes I am using kde-experimental repos. But libx11-xcb1 is installed. I have updated some qt5 libs last night and everything went broken.

[melmarker]

you have two easy choices:
 * reinstall
 * rollback/downgrade
 
the third choice is also easy - reinstall, congratulations, you messed up qt and kde badly.

[gericom]

Thanks, I will try that tonight, when I am back and will report.

[melmarker]

dont mix Qt/KDE sid with experimental - it will break, thats intentional

[gericom]

Ya, I know that, but sometimes I am getting stupid  so can you tell me which are the siduction experimental repos, which are not intended to be used from normal user.
Thanks a lot.

[horo]

...Sometimes I am using kde-experimental repos...
...so can you tell me which are the siduction experimental repos, which are not intended to be used from normal user.

probably the entries in your sources.list.d files with "experimental" in the name that _YOU_ added.

Don't forget what your good book said (not to say RTFM): http://sidu-manual/sys-admin-apt
 
Ciao, Martin

[melmarker]

@gericom - rule of thumb - don't take Qt and Qt based packages from experimental - it must break. I have a sample from a packages maintained by myself:

sid: https://buildd.debian.org/status/package.php?p=liblxqt&suite=sid

experimental: https://buildd.debian.org/status/package.php?p=liblxqt&suite=experimental

Code: [Select]

Dependency installability problem for liblxqt on ppc64:

liblxqt build-depends on:
- ppc64:libqt5xdg-dev
ppc64:libqt5xdg-dev depends on:
- ppc64:libqt5xdg1 (= 1.2.0+20150807-1)
ppc64:libqt5xdg1 depends on missing:
- ppc64:qtbase-abi-5-4-2
Because of Qt 5.5 in experimental wich will break the ABI (and the virtual dependency). In other, warmer words: snafu

[melmarker]

erm - and the discussion about kdenext you will find in another very popular thread - i say nothing pro/against kdenext - but recommend that one should stay far away from kdenext/experimental, the name is program and this repo is for development only - so it will indeed kill kittens and other lovely pets.