Hi Mourad, Does manually restarting kwin resolve the issue (execute `kwin --replace` in Konsole or KRunner)? If not, does running that command in Konsole show errors?
You may also want to check if you fully upgraded everything. Does `apt upgrade` mention packages that were held back? Hope that helps, Thom Op di 24 nov. 2020 om 21:23 schreef <newbee...@nativobject.net>: > > Hi, > > This is now several days that plasma/kde in testing haven't any working > window decorator. > > As workaround, I'm launching manually fluxbox and it takes place of kwin. > > I'm not able to find any log about something wrong. > > I have tested workaround explained in "Upgrade partially some packages > (Plasma 5.19. 5 - > 3) on testing broke plasma." threat but no success at all. > > Is there something to find the problem and to help to fix it ? > > Regards > > Mourad >