The problem always exists, these last two days I had had no blocking, previously I had to reboot the system one twice a day what is not very pleasant, today I was still a victim of this blocking. The blocking does not still show itself in the same way, the common point is however the impossibility to launch a program since the bar of command. Certain times it is possible to exploit the open windows and even to launch the yakuake konsoles, of other time we can make nothing except open a new session by Ctl+Alt+F2. On a Yakuake console qdbus org.kde.plasmashell show that it does not work, on the screen sometimes its seems that an little white window is open, one time an little window name plasma is open and blocked. The blocking can arrive the session being opened and without activity. The only method to reboot the computer is to launch a poweroff yakuake is in a new session or in a console. Today after a poweroff I had this message: policykit daemon disconnected from the bus. we are no longer a registered authentication agent Sometimes when all is blocked after an poweroff the system never stop, the only method is to stop the computer electrically. Philippe Merlin
