[Bug 903097] [NEW] kwin crash on second (and subsequent) login

[Robert Chalmas]

Public bug reported:

At boot time, the KDE session always opens successfully. If I log out
and try to log in again, kwin crashes immediatly after entering my
password and pressing enter, without displaying KDE desktop, instead I'm
back to the login screen. The next attempt is always successful and the
KDE session opens, but with the desktop effects disabled.

After opening System Settings, then Desktop Effects, I can see the
message " OpenGL compositing (the default) has crashed KWin in the
past." If I re-enable the desktop effects and log out, then try to log
in again, the crash repeats as described above. This is 100%
reproductible.

The only two ways to be able to log in without crash when the desktop
effects are enabled are rebooting or killing the X-server.

This happens with kubuntu 11.10 (on a fresh install but also with all
updates) and 12.04 alpha1, but this did not happen with kubuntu 11.04.
This happens with both 32 bit and 64 bit versions.

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: kde-window-manager 4:4.7.1-0ubuntu5
ProcVersionSignature: Ubuntu 3.0.0-14.23-generic-pae 3.0.9
Uname: Linux 3.0.0-14-generic-pae i686
ApportVersion: 1.23-0ubuntu3
Architecture: i386
Date: Mon Dec 12 10:34:43 2011
InstallationMedia: Kubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012)
ProcEnviron:
 LANGUAGE=
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: kde-workspace
UpgradeStatus: No upgrade log present (probably fresh install)

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


** Tags: apport-bug i386 oneiric

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https://bugs.launchpad.net/bugs/903097

Title:
  kwin crash on second (and subsequent) login

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