Bug#803433: [libqt5x11extras5] Crashes all and everything of Plasma.

[Jan Hudec <bulb@ucw.cz>]

Package: libqt5x11extras5
Version: 5.5.1-2
Severity: critical

--- Please enter the report below this line. ---

Yesterday libqt5x11extra5 upgraded to 5.5.1-2 in testing without the rest of 
qt5 following and Plasma/KDE5 crashed. Everything. Screen locker in the 
running session, after restart kdeinit, drkonqi that tried to handle the 
crash, sddm.

The backtrace referenced to /usr/lib/x86_64-linux-
gnu/qt5/plugins/styles/breeze.so and xcb and I did not see libQt5X11Extras.so 
in there, but since that was the only (remotely relevant) thing that changed 
in that upgrade, it was the obvious culprit. And downgrading it back did fix 
everything.

The important point here is that ONLY libqt5x11extra5 upgraded to 5.5, while 
the REST OF QT REMAINED 5.4. So the version itself may not be broken and may 
work fine with the rest of qt 5.5. The issue to fix here is just reverting 
this one package from testing and ensuring all of qt 5.5 enters testing 
together.

--- System information. ---
Architecture: amd64
Kernel:       Linux 4.2.0-1-amd64

Debian Release: stretch/sid
  990 testing         http.debian.net 
  500 wily            ppa.launchpad.net 
  500 unstable        http.debian.net 
  500 trusty          ppa.launchpad.net 
  500 testing-proposed-updates http.debian.net 
  500 stable-updates  ftp.cz.debian.org 
  500 stable          security.debian.org 
  500 stable          ftp.cz.debian.org 
    1 experimental    http.debian.net 

--- Package information. ---
Depends           (Version) | Installed
===========================-+-===========
libc6             (>= 2.14) | 
libqt5core5a     (>= 5.0.2) | 
libqt5gui5       (>= 5.0.2) | 


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-- 
 - Jan Hudec <bulb@ucw.cz>