[Bug 1157474] [NEW] kwin in ppa:kubuntu-ppa/backports hangs just after login when launching a random application.

[林博仁(Henry Lin) a.k.a. Ｖ字龍(Vdragon)]

Public bug reported:

System: Ubuntu 12.10 x86 32bit with ppa:kubuntu-ppa/backports enabled

How to reproduce
---------------------------------
1. Login to KDE
2. Launch any application (e.g. Dolphin)
3. Wait 5 sec.

Symptoms
---------------------------------
The whole screen hangs, only mouse cursur is movable.
It still able to switch to diffrent terminals
kwin --replace and any GUI application will hang if executed after this hang until the original kwin is killed

Workaround
---------------------------------
1. switch to TTY terminal and login
2. send SIGKILL signal to terminate kwin (SIGTERM is not sufficient)
    pkill --signal SIGKILL kwin
3. run another terminal emulator in TTY terminal
    env DISPLAY=:0 konsole
4. Switch back to X terminal, execute following command in the Konsole window
     kwin &
5. redo 1~4 if the problem persists.

Other details
----------------------------------
* It seems that this issue is not related to graphic interface...
* ppa-purge the kubuntu-ppa/backports to downgrade everything back to quantal-updates seems to solve this issue too.

** Affects: kde-workspace (Ubuntu)
     Importance: Undecided
         Status: New

** Description changed:

  System: Ubuntu 12.10 x86 32bit with ppa:kubuntu-ppa/backports enabled
  
  How to reproduce
  ---------------------------------
  1. Login to KDE
  2. Launch any application (e.g. Dolphin)
  3. Wait 5 sec.
  
  Symptoms
  ---------------------------------
  The whole screen hangs, only mouse cursur is movable.
  It still able to switch to diffrent terminals
  
  Workaround
  ---------------------------------
  1. switch to TTY terminal and login
  2. send SIGKILL signal to terminate kwin (SIGTERM is not sufficient)
-     pkill --signal SIGKILL kwin
+     pkill --signal SIGKILL kwin
  3. run another terminal emulator in TTY terminal
-     env DISPLAY=:0 konsole
+     env DISPLAY=:0 konsole
  4. Switch back to X terminal, execute following command in the Konsole window
-      kwin &
- 5. redo 1~4 if the problem exists.
+      kwin &
+ 5. redo 1~4 if the problem persists.
  
  Other details
  ----------------------------------
  * It seems that this issue is not related to graphic interface...
  * ppa-purge the kubuntu-ppa/backports to downgrade everything back to quantal-updates seems to solve this issue too.

-- 
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https://bugs.launchpad.net/bugs/1157474

Title:
  kwin in ppa:kubuntu-ppa/backports hangs just after login when
  launching a random application.

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