[Impact]
If you have more than 1 display attached to the system during first login you end up with only 1 half configured panel on one display and with no panel on all other displays.
The initialization script assumes that the first panel is already there when setting up the panels for the additional displays and crashes when that's not the case.
More info on the IRC discussion:
http://irclogs.ubuntu.com/2013/05/01/%23kubuntu-devel.html#t20:57
[Test Case]
1) You need at least 2 displays connected to the PC (or 1 additional monitor attached to a notebook) before continuing
2) Create a new user and login
3) The primary display should have no panel at all, only one display should have a panel with an activity switcher widget on it.
4) Install kubuntu-settings from raring-proposed
5) reset the kde configuration by deleting ~/.kde
6) log in again
You should now have properly set up panels on all displays.
[Regression Potential]
Upstream also loads the first panel settings before setting up the desktops and other panels so it should be safe.
== Original description ==
On a new install I don't get a taskbar(panel) or kde menu - I only see one panel with just activitives on it - i.e only half a desktop...
This has occurred on multiple machines (all with Nvidia cards and dual monitors)
I have to add the panel manually or I don't have a taskbar/menu - you have one panel with just the activity launcher.
This occurs before installing the nvidia binary driver.
It's happened on 3 different work stations (all dual monitor/nvidia)
More info on this reddit thread
http://www.reddit.com/r/kde/comments/1d48wb/kubuntu_1304_released/
== Workaround ==
For those that need this to work before a fix is out and don't want to edit the panels by hand, edit
/usr/share/kubuntu-default-settings/kde4-profile/default/share/apps/plasma-desktop/init/00-defaultLayout.js
there replace
panel.height = panels()[i].height = screenGeometry(0).height > 1024 ? 35 : 27
with
panel.height = screenGeometry(0).height > 1024 ? 35 : 27
after that reset your kde configuration by removing ~/.kde (or at least the plasma config in there), login and you'll have properly set up panels.
ProblemType: BugDistroRelease: Ubuntu 13.04
Package: kde-workspace 4:4.10.2-0ubuntu2
ProcVersionSignature: Ubuntu 3.8.0-19.29-generic 3.8.8
Uname: Linux 3.8.0-19-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.9.2-0ubuntu8
Architecture: amd64
Date: Tue Apr 30 10:54:50 2013
InstallationDate: Installed on 2013-04-26 (3 days ago)
InstallationMedia: Kubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
MarkForUpload: True
PackageArchitecture: allSourcePackage: kde-workspace
UpgradeStatus: No upgrade log present (probably fresh install)
Status changed to 'Confirmed' because the bug affects multiple users.