[Bug 1305789] [NEW] kded4 crashed with SIGSEGV in KScreenDaemon::monitorConnectedChange()

[Glenn Holmer]

Public bug reported:

Happens when starting vnc4server like this:

su $USER1 -l -s /bin/bash -c \
"vncserver :1 -geometry 1024x768 -depth 24 -name $SESSION_NAME" 2>&1

where $USER1 is the name of a user and $SESSION_NAME is the hostname of
the VM with "1" or "2" appended.

~/.vnc/xstartup contains just the single line:

. /etc/X11/Xsession

I tried it also with "startkde" and got the same result.

ProblemType: Crash
DistroRelease: Ubuntu 14.04
Package: kdelibs-bin 4:4.12.97-0ubuntu1
ProcVersionSignature: Ubuntu 3.13.0-23.45-generic 3.13.8
Uname: Linux 3.13.0-23-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.14.1-0ubuntu1
Architecture: amd64
CurrentDesktop: KDE
Date: Thu Apr 10 05:41:04 2014
ExecutablePath: /usr/bin/kded4
InstallationDate: Installed on 2014-03-29 (11 days ago)
InstallationMedia: Kubuntu 14.04 LTS "Trusty Tahr" - Daily amd64 (20140328)
ProcCmdline: /usr/bin/kded4 --nocrashhandler
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0x7f00cc8940d6:	movzwl 0xe(%rax),%eax
 PC (0x7f00cc8940d6) ok
 source "0xe(%rax)" (0x0000000e) not located in a known VMA region (needed readable region)!
 destination "%eax" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: kde4libs
StacktraceTop:
 ?? () from /usr/lib/kde4/plugins/kscreen/KSC_XRandR11.so
 KScreenDaemon::monitorConnectedChange() () from /usr/lib/kde4/kded_kscreen.so
 KScreenDaemon::KScreenDaemon(QObject*, QList<QVariant> const&) () from /usr/lib/kde4/kded_kscreen.so
 ?? () from /usr/lib/kde4/kded_kscreen.so
 KPluginFactory::create(char const*, QWidget*, QObject*, QList<QVariant> const&, QString const&) () from /usr/lib/libkdecore.so.5
Title: kded4 crashed with SIGSEGV in KScreenDaemon::monitorConnectedChange()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip libvirtd lpadmin plugdev sambashare sudo wireshark

** Affects: kde4libs (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-crash need-amd64-retrace trusty

** Information type changed from Private to Public

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Title:
  kded4 crashed with SIGSEGV in KScreenDaemon::monitorConnectedChange()

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