An imap folder is offline, and impossible to bring back online. Update this folder> "Before syncing folder it is necessary to have the resource online. Do you want to make it online?" > Go Online org.kde.pim.akonadicontrol: Agent instance with identifier "akonadi_imap_resource_0" does not exist org.kde.pim.akonadicontrol: Agent instance with identifier "" does not exist org.kde.pim.akonadicontrol: Agent instance with identifier "akonadi_imap_resource_0" does not exist akonadictl restart does not solve anything.
Same here.
looking further into it, two files were excluded from my synchronization setup. On the buggy desktop they were missing imap informations in agentsrc and mailtransports: .config/akonadi/agentsrc -akonadi_imap_resource\InstanceCounter=0 +akonadi_imap_resource\InstanceCounter=1 +akonadi_imap_resource_0\AgentType=akonadi_imap_resource .config/mailtransports [General] -default-transport=1927230780 +default-transport=1338476827 +[Transport 1338476827] +auth=true + ... imap setup stuff ... Now it works, but not tested for long. More relevant for this bug report: the kmail feedback could be improved (instead of just staying off-line), when an imap folder exists without the corresponding Transport.
Created attachment 115419 [details] Corresponding resource setting
Apologies. Please ignore my last attachment, I used the wrong tab (had my own report open at another tab).