2011/9/27 Jesús J. Guerrero Botella <jesus.guerrero.botella@gmail.com>:
> Check that the consolekit service is also on at bootup.
>
> Besides that, the udisks, upower, consolekit, policykit and udev flags
> apply here. Check they are on, particularly for kde-base/kdelibs
> (emerge -pv kdelibs).
All are enabled.
> What kdelibs (and kde, in general) version(s) are you using?
4.7.1
> Hal hasn't been needed for disk mounting nor anything else for a long time.
>
Consolekit has indeed been in init, but hotplug and acpi are still
non-functional.
I don't know if this is related, but the kde policykit thingy dies
shortly after login due to a buffer overflow in memcpy.
Here's the output of solid-hardware list:
Object::connect: No such signal
QDBusAbstractInterface:

eviceAdded(QString) in
/var/tmp/portage/kde-base/kdelibs-4.7.1/work/kdelibs-4.7.1/solid/solid/backends/upower/upowermanager.cpp:67
Object::connect: No such signal
QDBusAbstractInterface:

eviceRemoved(QString) in
/var/tmp/portage/kde-base/kdelibs-4.7.1/work/kdelibs-4.7.1/solid/solid/backends/upower/upowermanager.cpp:69
Object::connect: No such signal
QDBusAbstractInterface:

eviceAdded(QDBusObjectPat h) in
/var/tmp/portage/kde-base/kdelibs-4.7.1/work/kdelibs-4.7.1/solid/solid/backends/udisks/udisksmanager.cpp:70
Object::connect: No such signal
QDBusAbstractInterface:

eviceRemoved(QDBusObjectP ath) in
/var/tmp/portage/kde-base/kdelibs-4.7.1/work/kdelibs-4.7.1/solid/solid/backends/udisks/udisksmanager.cpp:72
Object::connect: No such signal
QDBusAbstractInterface:

eviceChanged(QDBusObjectP ath) in
/var/tmp/portage/kde-base/kdelibs-4.7.1/work/kdelibs-4.7.1/solid/solid/backends/udisks/udisksmanager.cpp:74
QStringList Solid::Backends::UDisks::UDisksManager::allDevices Internal()
error: "org.freedesktop.DBus.Error.Spawn.ExecFailed"
virtual QStringList
Solid::Backends::UPower::UPowerManager::allDevices () error:
"org.freedesktop.DBus.Error.Spawn.ExecFailed"
udi = '/org/kde/solid/udev/sys/devices/LNXSYSTM:00/LNXCPU:00'
udi = '/org/kde/solid/udev/sys/devices/LNXSYSTM:00/LNXCPU:01'
udi = '/org/kde/solid/udev/sys/devices/pci0000:00/0000:00:1b.0/sound/card0/adsp'
udi = '/org/kde/solid/udev/sys/devices/pci0000:00/0000:00:1b.0/sound/card0/audio'
udi = '/org/kde/solid/udev/sys/devices/pci0000:00/0000:00:1b.0/sound/card0/dsp'
udi = '/org/kde/solid/udev/sys/devices/pci0000:00/0000:00:1b.0/sound/card0/hwC0D0'
udi = '/org/kde/solid/udev/sys/devices/pci0000:00/0000:00:1b.0/sound/card0/hwC0D1'
udi = '/org/kde/solid/udev/sys/devices/pci0000:00/0000:00:1b.0/sound/card0/hwC0D2'
udi = '/org/kde/solid/udev/sys/devices/pci0000:00/0000:00:1b.0/sound/card0/mixer'
udi = '/org/kde/solid/udev/sys/devices/pci0000:00/0000:00:1b.0/sound/card0/pcmC0D0c'
udi = '/org/kde/solid/udev/sys/devices/pci0000:00/0000:00:1b.0/sound/card0/pcmC0D0p'
udi = '/org/kde/solid/udev/sys/devices/pci0000:00/0000:00:1b.0/sound/card0/pcmC0D1p'
udi = '/org/kde/solid/udev/sys/devices/pci0000:00/0000:00:1b.0/sound/card0/pcmC0D3p'
udi = '/org/kde/solid/udev/sys/devices/pci0000:00/0000:00:1b.0/sound/card0/controlC0'
udi = '/org/kde/solid/udev/sys/devices/pci0000:00/0000:00:1c.1/0000:03:00.0/net/wlan0'
udi = '/org/kde/solid/udev/sys/devices/pci0000:00/0000:00:1c.5/0000:08:00.0/net/eth0'
udi = '/org/kde/solid/udev/sys/devices/pci0000:00/0000:00:1d.7/usb2/2-5/2-5:1.0/video4linux/video0'
udi = '/org/kde/solid/udev/sys/devices/platform/serial8250/tty/ttyS0'
udi = '/org/kde/solid/udev/sys/devices/platform/serial8250/tty/ttyS1'
udi = '/org/kde/solid/udev/sys/devices/platform/serial8250/tty/ttyS2'
udi = '/org/kde/solid/udev/sys/devices/platform/serial8250/tty/ttyS3'
udi = '/org/kde/solid/udev/sys/devices/virtual/net/lo'
udi = '/org/kde/solid/udev/sys/devices/virtual/net/sit0'
udi = '/org/kde/solid/udev/sys/devices/virtual/sound/seq'
udi = '/org/kde/solid/udev/sys/devices/virtual/sound/sequencer'
udi = '/org/kde/solid/udev/sys/devices/virtual/sound/sequencer2'
udi = '/org/kde/solid/udev/sys/devices/virtual/sound/timer'
udi = '/org/freedesktop/UDisks'
udi = '/org/kde/fstab'
udi = '/org/kde/upnp'
Also, recurring errors in the form of "Failed to execute program
/usr/libexec/dbus-daemon-launch-helper: Success", which is determined
to be EPERM, which is probably due to Bad Things in policykit.