KDE4.11 update logs in to black screen

[Teunis]

Last night I had the laptop upgrade to the new KDE4.11, the hotel WIFI is terribly slow but it ran successfully during the night.
This morning Muon was waiting with a question about KDM and Lightdm, I have both installed but the past weeks I've been using KDEM.
I clicked the continue with KDM (or so...) and the upgrade was completed.
A reboot showed Smooth Tasks was missing and Muon reported an incompatibility so I reinstated the regular task manager.

During the day I have started the computer at least twice and without issues.
Upon coming back into the hotel I investigated the dependency problem with Smooth Tasks and found a lib with two versions available. (libtaskmanager4abi3&4)
I installed the most recent plus Smooth Tasks, rebooted and the login ended in a black screen.

Some mucking around in a terminal brought me to try

sudo startx

and the desktop reappeared!
A new reboot and although slow, I was able to log in properly.
But several Plasmoids like Luna and a simple system load applet were missing.

Smooth Tasks is also missing, I'll wait to try that one again
Muon reports it is conflicting with plasma-widget-smooth-tasks...

[SteveRiley]

Running your desktop as root is likely to cause problems... http://superuser.com/questions/40018...er-sudo-startx

I think you'll have to stop using plasma-widget-smooth-tasks. Observe:

teve@t520:~$ [B]aptitude -s install plasma-widget-smooth-tasks[/B]
The following NEW packages will be installed:
  libtaskmanager4abi3{ab} plasma-widget-smooth-tasks 
0 packages upgraded, 2 newly installed, 0 to remove and 0 not upgraded.
Need to get 435 kB of archives. After unpacking 1,412 kB will be used.
The following packages have unmet dependencies:
 libtaskmanager4abi3 : Depends: libprocesscore4abi1 [B][COLOR="#B22222"](= 4:4.10.5-0ubuntu0.1)[/COLOR][/B] but 4:4.11.0-0ubuntu1~ubuntu13.04~ppa1 is installed.

In KDE 4.11, the version of libprocesscore4ab1 is newer, while libtaskmanager4abi3 specifically depends on an older one.

[Teunis]

Yes I would under normal circumstances never run the desktop with a sudo but under circumstances it did the trick.
In hindsight I might also have tried deleting the plasma section in ~/.kde

Right now there is another 'circular' dependency issue with lsb-core...

[Teunis]

The dependency problem in lbs-core was just fixed when new packages became available.

It's years ago I've experienced these types of problems.

[SteveRiley]

Yeah, this latest KDE update seems to exhibit a few more foibles than previous ones. Nothing too challenging.

[Teunis]

Smooth tasks is now insalling without broken dependencies.
All is well with this 4.11