Can't start LXQt-Desktop

Tags: #<Tag:0x00007fc0bcfa9ae0>

Hello,
after changing in
OM Control Center -> OPenMandriva repo-picker -> Rock and Release
I have

$ dnf repolist                                                                                         
Letzte Prüfung auf abgelaufene Metadaten: vor 1:13:19 am Sa 31 Aug 2019 13:25:40 CEST.
Paketquellen-ID                                    Paketquellen-Name:                                                    Status
cooker-x86_64                                      OpenMandriva Cooker - x86_64                                          14.971
google-earth-pro                                   google-earth-pro                                                           2
rock-updates-x86_64                                OpenMandriva Rock - x86_64 - Updates                                     476
rock-updates-x86_64-non-free                       OpenMandriva Rock - Non-free - x86_64 - Updates                           12
rock-updates-x86_64-restricted                     OpenMandriva Rock - Restricted - x86_64 - Updates                          0
rock-updates-x86_64-unsupported                    OpenMandriva Rock - Unsupported - x86_64 - Updates                        57
rock-x86_64                                        OpenMandriva Rock - x86_64                                            15.662
rock-x86_64-non-free                               OpenMandriva Rock - Non-free - x86_64                                    155
rock-x86_64-restricted                             OpenMandriva Rock - Restricted - x86_64                                  164
rock-x86_64-unsupported                            OpenMandriva Rock - Unsupported - x86_64                              13.281

with the Repository
cooker-x86_64 OpenMandriva Cooker - x86_64 14.971
and
$ sudo dnf --refresh upgrade
has more than thousand packages updated.

Now I can’t start LXQt-Desktop from sddm-Desktop. Fall back and always land on sddm-Desktop.

How can I repair this?
How can I remove ‘task-lxqt’ and than reinstall again?

with regards
Ch. Hanisch

Fresh install. And quit mixing repositories from different releases. From here:

If you mix different release/update channel repositories and you break your computer the solution is to do a fresh install. And after that fresh install don’t do this again.

Yes. After a new installation I have only

$ dnf repolist
Letzte Prüfung auf abgelaufene Metadaten: vor 14:30:20 am Sa 31 Aug 2019 21:41:02 CEST.
Paketquellen-ID                                   Paketquellen-Name:                                                   Status
google-earth-pro                                  google-earth-pro                                                          2
rock-updates-x86_64                               OpenMandriva Rock - x86_64 - Updates                                    476
rock-updates-x86_64-non-free                      OpenMandriva Rock - Non-free - x86_64 - Updates                          12
rock-updates-x86_64-restricted                    OpenMandriva Rock - Restricted - x86_64 - Updates                         0
rock-updates-x86_64-unsupported                   OpenMandriva Rock - Unsupported - x86_64 - Updates                       57
rock-x86_64                                       OpenMandriva Rock - x86_64                                           15.662
rock-x86_64-non-free                              OpenMandriva Rock - Non-free - x86_64                                   155
rock-x86_64-restricted                            OpenMandriva Rock - Restricted - x86_64                                 164
rock-x86_64-unsupported                           OpenMandriva Rock - Unsupported - x86_64                             13.281

and much problems with missing packages.

with regards
Ch. Hanisch