crippled desktop environment after a particular reboot

[almy]

xubuntu 11.4 . my VLC was still playing when i pressed "reboot",it didn't reboot till i closed the VLC window,then it rebooted to a crippled desktop environment.(i regenerated the problem 3 times)

description of the crippled environment


in the setting manager the "windows manager tweaks" and "windows manager" were empty(no settings in them)
no full screen with videos and pictures
no transparency effects
windows didn't have the title bar,and can not be moved (except firefox)
open windows didn't appear in the panel
message boxes appeared embedded in the parent window
alt+tab didn't work
and more


so i created a new user and his desktop was healthy

i repeated the reboot procedure described above, and the same problem appeared again and again.


thanks in advance ,and apologies for my poor English
:)

[Copper Bezel]

By the sound of it, the "crippled desktop" doesn't have xfwm4, the window manager, running. What happens if you run xfwm4 --replace ?

[almy]

yes ,it worked.
many thanks copper

[Copper Bezel]

Excellent. = ) Please mark the thread as solved, if you would (thread tools in the upper right.)