Systemd KCM fails to start (deadlock after "Volatile partition"): --------------- $ kcmshell5 kcm_systemd QDBusArgument: read from a write-only object QDBusArgument: read from a write-only object QDBusArgument: read from a write-only object true Detected systemd 219 Persistent partition size found to: 30108 MB Volatile partition size found to: 1948 MB --------------- Qt 5.6.0, KF 5.20.0, Plasma 5.6.2. Reproducible: Always
This happens with latest systemd kcm master as well.
After all it started, just took a long to do it. Looks like it happens because of blocking DBus call: --------------- Detected systemd 219 Persistent partition size found to: 30108 MB Volatile partition size found to: 1948 MB Invalid DBus interface on bus 2 Refreshing system units... Refreshing user units... Invalid DBus interface on bus 2 --------------- Backtrace: ============================== #0 0x00007f8c76d83720 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0 #1 0x00007f8c79acbe6a in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib64/libQt5Core.so.5 #2 0x00007f8c7b8d52d4 in () at /usr/lib64/libQt5DBus.so.5 #3 0x00007f8c7b89b757 in () at /usr/lib64/libQt5DBus.so.5 #4 0x00007f8c7b89be21 in () at /usr/lib64/libQt5DBus.so.5 #5 0x00007f8c7b8a6bd5 in () at /usr/lib64/libQt5DBus.so.5 #6 0x00007f8c7b8a6d45 in QDBusInterface::QDBusInterface(QString const&, QString const&, QString const&, QDBusConnection const&, QObject*) () at /usr/lib64/libQt5DBus.so.5 #7 0x00007f8c5907405b in kcmsystemd::callDbusMethod(QString, dbusIface, dbusBus, QList<QVariant> const&) (this=this@entry= 0x200fa60, method=..., ifaceName=ifaceName@entry=sysdMgr, bus=bus@entry=user, args=...) at /usr/src/debug/systemd-kcm-1.2.1/src/kcmsystemd.cpp:1518 #8 0x00007f8c5907e565 in kcmsystemd::kcmsystemd(QWidget*, QList<QVariant> const&) (this=this@entry=0x200fa60, parent=parent@entry=0x1f8bf30, args=...) at /usr/src/debug/systemd-kcm-1.2.1/src/kcmsystemd.cpp:122 #9 0x00007f8c5908847b in KPluginFactory::createInstance<kcmsystemd, QWidget>(QWidget*, QObject*, QList<QVariant> const&) (parentWidget=<optimized out>, parent=<optimized out>, args=...) at /usr/include/KF5/KCoreAddons/kpluginfactory.h:477 ==============================
More debug info. There's about 1 minute lock after each bus 2 method calling. --------------- Detected systemd 219 Persistent partition size found to: 30108 MB Volatile partition size found to: 1948 MB Calling method "Subscribe" with iface 0 on bus 0 Calling method "Subscribe" with iface 0 on bus 2 Invalid DBus interface on bus 2 Refreshing system units... Calling method "ListUnits" with iface 0 on bus 0 Calling method "ListUnitFiles" with iface 0 on bus 0 Refreshing user units... Calling method "ListUnits" with iface 0 on bus 2 Invalid DBus interface on bus 2 ---------------
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This bug has been in NEEDSINFO status with no change for at least 30 days. The bug is now closed as RESOLVED > WORKSFORME due to lack of needed information. For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging Thank you for helping us make KDE software even better for everyone!