Public bug reported:
Plasma 5.12.3 was working fine on Kubuntu 17.10 plus backports ppa
On upgrading to Kubuntu 18.04 beta, plasmashell crashes every login
leaving an empty black screen. Applications can still be launched via
Alt-Space.
The only clues I can see are:
1. .xsession-errors contains:
KActivities: Database can not be opened in WAL mode. Check the SQLite
version (required >3.7.0). And whether your filesystem supports shared
memory
followed by multiple reports of:
KActivities: FATAL ERROR: Failed to contact the activity manager daemon
2. /home is an NFS share
Does NFS support shared memory?
If I unmount /home and use a local /home, copy all config folders from
the NFS to the local home, then all seems fine.
sqlite -version says 2.8.17
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: plasma-workspace 4:5.12.3-0ubuntu1
ProcVersionSignature: Ubuntu 4.15.0-12.13-generic 4.15.7
Uname: Linux 4.15.0-12-generic x86_64
ApportVersion: 2.20.8-0ubuntu10
Architecture: amd64
CurrentDesktop: KDE
Date: Fri Mar 23 17:16:26 2018
InstallationDate: Installed on 2016-04-03 (719 days ago)
InstallationMedia: Kubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
SourcePackage: plasma-workspace
UpgradeStatus: Upgraded to bionic on 2018-03-10 (13 days ago)
** Affects: plasma-workspace (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug bionic
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https://bugs.launchpad.net/bugs/1758402
Title:
plasmashell crashes on login. /home on NFS
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