> Пакеты kde-workspace и kdebase-workspace установлены?
> Когда-то бывало подобное...

kde-workspace стоял
kdebase-workspace поставил
не помогло

Xsession: X session started for povnitsa at Пнд Мар 30 09:45:40 MSK 2015
localuser:povnitsa being added to access control list
startkde: Starting up...
klauncher: This program is not supposed to be started manually.
klauncher: It is started automatically by kdeinit4.
kdeinit4: Communication error with launcher. Exiting!
kdeinit4_wrapper: Warning: connect(/home/povnitsa/.kde/socket-srv/kdeinit4__0) failed: : Connection refused
QDBusConnection: session D-Bus connection created before QCoreApplication. Application may misbehave.
OpenGL vendor string:                   Tungsten Graphics, Inc
OpenGL renderer string:                 Mesa DRI Intel(R) 946GZ x86/MMX/SSE2
OpenGL version string:                  2.1 Mesa 8.0.5
OpenGL shading language version string: 1.20
Driver:                                 Intel
GPU class:                              i915/i945
OpenGL version:                         2.1
GLSL version:                           1.20
Mesa version:                           8.0.5
X server version:                       1.12.4
Linux kernel version:                   3.2
Direct rendering:                       yes
Requires strict binding:                yes
GLSL shaders:                           limited
Texture NPOT support:                   yes
klauncher: This program is not supposed to be started manually.
klauncher: It is started automatically by kdeinit4.
kdeinit4: Communication error with launcher. Exiting!
klauncher: This program is not supposed to be started manually.
klauncher: It is started automatically by kdeinit4.
kdeinit4: Communication error with launcher. Exiting!
klauncher: This program is not supposed to be started manually.
klauncher: It is started automatically by kdeinit4.
kdeinit4: Communication error with launcher. Exiting!
kwin(3294): Couldn't start kglobalaccel from kglobalaccel.desktop:  "KLauncher could not be reached via D-Bus. Error when calling start_service_by_desktop_path:
The name org.kde.klauncher was not provided by any .service files
"

klauncher: This program is not supposed to be started manually.
klauncher: It is started automatically by kdeinit4.
kdeinit4: Communication error with launcher. Exiting!
kwin(3294): Couldn't start knotify from knotify4.desktop:  "KLauncher could not be reached via D-Bus. Error when calling start_service_by_desktop_path:
The name org.kde.klauncher was not provided by any .service files
"

Qt-subapplication: Fatal IO error: client killed
kwin: Fatal IO error: client killed
Could not connect to D-Bus server: org.freedesktop.DBus.Error.NoServer: Failed to connect to socket /tmp/dbus-RoIpCCdgep: В соединении отказано
startkde: Shutting down...
kdeinit4_wrapper: Warning: connect(/home/povnitsa/.kde/socket-srv/kdeinit4__0) failed: : Connection refused
Error: Can not contact kdeinit4!
startkde: Running shutdown scripts...
xprop:  unable to open display ':0'
xprop:  unable to open display ':0'
startkde: Done.

>[оверквотинг удален]
>> Уже сносил kde под корень с помощью следующих команд
> Что пишет /etc/init.d/dbus status ?
> Если [ ok ] dbus is running, попробуй запустить dbus-monitor - должен
> писать про всякую хню, что летает по dbus. Если нет -
> разбирайся с правами и настройками D-bus. Если нет самого /etc/init.d/dbus, поставь
> dbus
> Создай нового юзера и зайди им. Если у нового юзера всё работает,
> то у своего юзера снеси ~/.config, ~/.kde и ~/.local
> На "фоне рабочего стола" работает ли правая кнопка мыши или Alt-F2? Если
> не работает, то что появляется в логах?

dbus работает
xfce работает
при работающем xfce от пользователя dbus-monitor пишет
signal sender=org.freedesktop.DBus -> dest=:1.46 serial=2 path=/org/freedesktop/DBus; interface=org.freedesktop.DBus; member=NameAcquired
   string ":1.46"
method call sender=:1.46 -> dest=org.freedesktop.DBus serial=3 path=/org/freedesktop/DBus; interface=org.freedesktop.DBus; member=AddMatch
   string "eavesdrop=true,type='method_call'"
method call sender=:1.46 -> dest=org.freedesktop.DBus serial=4 path=/org/freedesktop/DBus; interface=org.freedesktop.DBus; member=AddMatch
   string "eavesdrop=true,type='method_return'"
method call sender=:1.46 -> dest=org.freedesktop.DBus serial=5 path=/org/freedesktop/DBus; interface=org.freedesktop.DBus; member=AddMatch
   string "eavesdrop=true,type='error'"

создание нового пользователя не помогло
правая кнопка мыши или Alt-F2 не работает в логах тишина