I've noticed that even after closing KDE and the X server several KDE processes are still shown in htop, notably virtuoso-t, nepomukserver, knotify and various kdeinit4 kio_somethings. I'm no developer, but shouldn't all of these processes been closed properly?

Something smells fishy.

Usually they are supposed to exit. This likely means that something blocked them from exiting on logout. Are any nepomukserver or nepomukservicestub processes running?

Yes there are. KDE never seems to exit cleanly anyways. (I don't use KDM, so I only have the "logout" option in KDE to quit X)

Ive always set it to "Start with an empty session" in the configuration so that rogue processes arent kept after reboot

Moult wrote:Yes there are. KDE never seems to exit cleanly anyways. (I don't use KDM, so I only have the "logout" option in KDE to quit X)

why? what do you use xdm?

Supreme, I don't think that's the cause. This is cleaning processes when _closing_ KDE, not opening it.

google01103, I don't use xdm, kdm, or any login screen. I start whatever DE/WM I feel like using with `startx`. If KDM doesn't exist, KDE no longer provides options to reboot, shutdown or hibernate in the KickOff menu. The only way to exit KDE is to Log out.

Which version of KDE is being used? If KDE logs out really quickly ( like it does here ) some processes will quit about 30 seconds to a minute after it finishes logging out,

I am using 4.5.1. No, KDE does not quit really quickly. It takes a sensible amount of time to quit. Waiting doesn't have any effect, the processes remain there.

Can you post the full list of processes that hang around please?

OK it happened again, here's the list:
/usr/bin/knotify4
/usr/bin/virtuoso-t +foreground +configfile /tmp/virtuoso_something.ini + wait
kdeinit4: kio_http_cache_cleaner [kdeinit]
/usr/bin/nepomukserver

Is there anything in ~/.xsession-errors that might hint at why they are still running? This shouldn't be possible as KNotify4 at least needs an X server, and NepomukServer and KNotify4 need D-Bus, which isn't running.

Sorry for the late reply, I have been using ratpoison lately instead of KDE (not because I don't like KDE, of course!) and I only recently managed to get it to happen again. I don't know much on how to interpret the xsession errors, so perhaps you can fare better:

Code: Select all

kglobalaccel(6392) KGlobalAccelImpl::x11Event: Got XKeyPress event
kglobalaccel(6392) GlobalShortcutsRegistry::keyPressed: "Alt+F4" = "Window Close"
dolphin(11751)/kdecore (KConfigSkeleton) KCoreConfigSkeleton::writeConfig:
dolphin(11751)/kdecore (KConfigSkeleton) KCoreConfigSkeleton::writeConfig:
dolphin(11751)/kdecore (KConfigSkeleton) KCoreConfigSkeleton::writeConfig:
dolphin(11751)/kdecore (KConfigSkeleton) KCoreConfigSkeleton::writeConfig:
kwin(6389) KWin::Workspace::updateClientArea: screens:  1 desktops:  4
kwin(6389) KWin::Workspace::updateClientArea: Done.
dolphin(11751)/kdecore (KConfigSkeleton) KCoreConfigSkeleton::writeConfig:
Object::disconnect: Unexpected null parameter
dolphin(11751)/kdecore (KConfigSkeleton) KCoreConfigSkeleton::writeConfig:
dolphin(11751)/kdecore (KConfigSkeleton) KCoreConfigSkeleton::writeConfig:
[/usr/bin/nepomukservicestub] virtual void Soprano::Server::ServerConnection::run() thread done.
void Soprano::Server::ServerCore::serverConnectionFinished()
virtual Soprano::Server::ServerConnection::~ServerConnection() Removing connection
void Soprano::Server::ServerCore::serverConnectionFinished() Connection removed. Current count: 7
kDebugStream called after destruction (from void KDirWatchPrivate::removeEntry(KDirWatch*, KDirWatchPrivate::Entry*, KDirWatchPrivate::Entry*) file /var/tmp/portage/kde-base/kdelibs-4.4.2/work/kdelibs-4.4.2/kio/kio/kdirwatch.cpp line 950)
Cancelled INotify (fd 10, 1) for "/home/dion/.local/share//user-places.xbel"
kglobalaccel(6392) KGlobalAccelImpl::x11Event: Got XKeyPress event
kglobalaccel(6392) GlobalShortcutsRegistry::keyPressed: "Alt+F4" = "Window Close"
kwin(6389) KWin::Client::readUserTimeMapTimestamp: User timestamp, initial: 2318951
kwin(6389) KWin::Client::readUserTimeMapTimestamp: User timestamp, ASN: 2318951
kwin(6389) KWin::Client::readUserTimeMapTimestamp: User timestamp, final: 'ID: 62954574 ;WMCLASS: "firefox" : "dialog" ;Caption: "" ' : 2318951
kwin(6389) KWin::Workspace::allowClientActivation: Activation: Belongs to active application
kwin(6389) KWin::Workspace::updateClientArea: screens:  1 desktops:  4
kwin(6389) KWin::Workspace::updateClientArea: Done.
kwin(6389) KWin::Workspace::updateClientArea: screens:  1 desktops:  4
kwin(6389) KWin::Workspace::updateClientArea: Done.
kwin(6389) KWin::Workspace::updateClientArea: screens:  1 desktops:  4
kwin(6389) KWin::Workspace::updateClientArea: Done.
kwin(6389) KWin::Client::readUserTimeMapTimestamp: User timestamp, initial: 2320738
kwin(6389) KWin::Client::readUserTimeMapTimestamp: User timestamp, ASN: 2320738
kwin(6389) KWin::Client::readUserTimeMapTimestamp: User timestamp, final: 'ID: 31457398 ;WMCLASS: "plasma-desktop" : "plasma-desktop" ;Caption: "plasma-desktop" ' : 2320738
kwin(6389) KWin::Workspace::allowClientActivation: Activation: No client active, allowing
kwin(6389) KWin::Workspace::updateClientArea: screens:  1 desktops:  4
kwin(6389) KWin::Workspace::updateClientArea: Done.
kwin(6389) KWin::Workspace::allowClientActivation: Activation: Belongs to active application
kwin(6389) KWin::Workspace::updateClientArea: screens:  1 desktops:  4
kwin(6389) KWin::Workspace::updateClientArea: Done.
klipper(6448)/kdecore (KConfigSkeleton) KCoreConfigSkeleton::writeConfig:
QPainter::begin: Paint device returned engine == 0, type: 2
QPainter::setCompositionMode: Painter not active
QPainter::end: Painter not active, aborted
kglobalaccel(6392) GlobalShortcutsRegistry::unregisterKey: Unregistering key "Volume Up" for "kmix" : "increase_volume"
[...snip - a bunch of unregistering keys stuff...]
krunner(6416)/kdecore (KConfigSkeleton) KCoreConfigSkeleton::writeConfig:
yakuake(6428) Konsole::SessionManager::~SessionManager: Konsole SessionManager destroyed with sessions still alive
Undecodable sequence: \001b(hex)[?1034h
Undecodable sequence: \001b(hex)[?1034h
kwin(6389) KWin::Workspace::updateClientArea: screens:  1 desktops:  4
kwin(6389) KWin::Workspace::updateClientArea: Done.
kwin(6389) KWin::Workspace::updateClientArea: screens:  1 desktops:  4
kwin(6389) KWin::Workspace::updateClientArea: Done.
krunner(6416)/kio (KDirWatch) KDirWatchPrivate::removeEntry: doesn't know "/home/dion/Notes/pim"
Application '/usr/bin/nepomukservicestub' exited normally...
Application '/usr/bin/nepomukservicestub' exited normally...
Application '/usr/bin/nepomukservicestub' exited normally...
Application '/usr/bin/nepomukservicestub' exited normally...
X Error: BadWindow (invalid Window parameter) 3
  Extension:    139 (Uknown extension)
  Minor opcode: 6 (Unknown request)
  Resource id:  0x1400323
X Error: BadWindow (invalid Window parameter) 3
  Major opcode: 2 (X_ChangeWindowAttributes)
  Resource id:  0x1400323
Application::crashHandler() called with signal 11; recent crashes: 1
QCoreApplication::applicationFilePath: Please instantiate the QApplication object first
Application '/usr/bin/nepomukservicestub' exited normally...
Application '/usr/bin/nepomukservicestub' exited normally...
[/usr/bin/nepomukservicestub] virtual Soprano::ODBC::Connection::~Connection() QThread(0x166aa80)
virtual Soprano::ODBC::Connection::~Connection() QThread(0x166aa80)
virtual Soprano::ODBC::Connection::~Connection() QThread(0x166aa80)
virtual Soprano::ODBC::Connection::~Connection() QThread(0x166aa80)
virtual Soprano::ODBC::Connection::~Connection() QThread(0x166aa80)
virtual Soprano::ODBC::Connection::~Connection() QThread(0x166aa80)
Shutting down virtuoso instance 6423
Virtuoso server stopped: 0
virtual Soprano::Server::ServerConnection::~ServerConnection() Removing connection
virtual void Soprano::Server::ServerConnection::run() thread done.
virtual Soprano::Server::ServerConnection::~ServerConnection() Removing connection
virtual void Soprano::Server::ServerConnection::run() thread done.
virtual Soprano::Server::ServerConnection::~ServerConnection() Removing connection
virtual void Soprano::Server::ServerConnection::run() thread done.
virtual Soprano::Server::ServerConnection::~ServerConnection() Removing connection
virtual void Soprano::Server::ServerConnection::run() thread done.
virtual Soprano::Server::ServerConnection::~ServerConnection() Removing connection
virtual void Soprano::Server::ServerConnection::run() thread done.
virtual Soprano::Server::ServerConnection::~ServerConnection() Removing connection
virtual void Soprano::Server::ServerConnection::run() thread done.
virtual Soprano::Server::ServerConnection::~ServerConnection() Removing connection
virtual void Soprano::Server::ServerConnection::run() thread done.
Application '/usr/bin/nepomukservicestub' exited normally...
NepomukServer(6411)/kdecore (KConfigSkeleton) KCoreConfigSkeleton::writeConfig:
KCrash: Application 'kwin' crashing...
Fatal Error: Accessed global static 'KGlobalPrivate *globalData()' after destruction. Defined at /var/tmp/portage/kde-base/kdelibs-4.4.2/work/kdelibs-4.4.2/kdecore/kernel/kglobal.cpp:116
Unable to start Dr. Konqi
sh: --crashes: command not found
kio_file(11765) kdemain: Done
kio_file(11769) kdemain: Done
WARNING: deleting stale lockfile /var/tmp/kdecache-dion/plasma-svgelements-air-netbook.lock
startkde: Shutting down...
klauncher: Exiting on signal 15
klauncher: Exiting on signal 1
startkde: Running shutdown scripts...
startkde: Done.

Not sure why those processes are hanging around unfortunately. virtuoso-t is likely causing nepomukserver to remain running ( or the other way around, either way both are hung ). No idea about knotify4 or kio_http_cache_cleaner though.