Application: kded4 (4.11.2) KDE Platform Version: 4.11.2 Qt Version: 4.8.4 Operating System: Linux 3.11.0-12-generic x86_64 Distribution: Ubuntu 13.10 -- Information about the crash: - What I was doing when the application crashed: my laptop had been closed, but continually plugged in and running (no sleep) when the lid is opened, I get the reported error. This has been happening ever since upgrading to kubuntu 13.10 beta a few weeks ago. updating and rebooting after the final release has not solved the problem The crash can be reproduced every time. -- Backtrace: Application: KDE Daemon (kded4), signal: Segmentation fault Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". [Current thread is 1 (Thread 0x7fdcec6877c0 (LWP 3833))] Thread 6 (Thread 0x7fdcd1854700 (LWP 3858)): #0 0x00007fdceb1f83c0 in g_main_context_iteration@plt () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4 #1 0x00007fdceb342a76 in QEventDispatcherGlib::processEvents (this=0x7fdccc0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426 #2 0x00007fdceb3145ef in QEventLoop::processEvents (this=this@entry=0x7fdcd1853db0, flags=...) at kernel/qeventloop.cpp:149 #3 0x00007fdceb3148e5 in QEventLoop::exec (this=this@entry=0x7fdcd1853db0, flags=...) at kernel/qeventloop.cpp:204 #4 0x00007fdceb21388f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:542 #5 0x00007fdceb215f2f in QThreadPrivate::start (arg=0xf06db0) at thread/qthread_unix.cpp:338 #6 0x00007fdce76f2f6e in start_thread (arg=0x7fdcd1854700) at pthread_create.c:311 #7 0x00007fdce9f179cd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113 Thread 5 (Thread 0x7fdcc73fb700 (LWP 3867)): #0 0x00007fdce9f0af7d in poll () at ../sysdeps/unix/syscall-template.S:81 #1 0x00007fdce7017694 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #2 0x00007fdce7017afa in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007fdcc78f69d6 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0 #4 0x00007fdce703c0e5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #5 0x00007fdce76f2f6e in start_thread (arg=0x7fdcc73fb700) at pthread_create.c:311 #6 0x00007fdce9f179cd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113 Thread 4 (Thread 0x7fdcc69ee700 (LWP 3868)): #0 0x00007fdce70573c1 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #1 0x00007fdce70170d8 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #2 0x00007fdce701762b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007fdce701779c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #4 0x00007fdceb342a76 in QEventDispatcherGlib::processEvents (this=0x7fdcbc0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426 #5 0x00007fdceb3145ef in QEventLoop::processEvents (this=this@entry=0x7fdcc69edd70, flags=...) at kernel/qeventloop.cpp:149 #6 0x00007fdceb3148e5 in QEventLoop::exec (this=this@entry=0x7fdcc69edd70, flags=...) at kernel/qeventloop.cpp:204 #7 0x00007fdceb21388f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:542 #8 0x00007fdccb377fd7 in KCupsConnection::run() () from /usr/lib/libkcupslib.so #9 0x00007fdceb215f2f in QThreadPrivate::start (arg=0xf377e0) at thread/qthread_unix.cpp:338 #10 0x00007fdce76f2f6e in start_thread (arg=0x7fdcc69ee700) at pthread_create.c:311 #11 0x00007fdce9f179cd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113 Thread 3 (Thread 0x7fdcc61ed700 (LWP 3869)): #0 0x00007fdce76f5055 in __GI___pthread_mutex_lock (mutex=0x7fdcb8000a60) at pthread_mutex_lock.c:95 #1 0x00007fdce7057391 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #2 0x00007fdce7016d49 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007fdce70175b3 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #4 0x00007fdce701779c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #5 0x00007fdceb342a76 in QEventDispatcherGlib::processEvents (this=0x7fdcb80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426 #6 0x00007fdceb3145ef in QEventLoop::processEvents (this=this@entry=0x7fdcc61ecdb0, flags=...) at kernel/qeventloop.cpp:149 #7 0x00007fdceb3148e5 in QEventLoop::exec (this=this@entry=0x7fdcc61ecdb0, flags=...) at kernel/qeventloop.cpp:204 #8 0x00007fdceb21388f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:542 #9 0x00007fdceb215f2f in QThreadPrivate::start (arg=0xf2e4c0) at thread/qthread_unix.cpp:338 #10 0x00007fdce76f2f6e in start_thread (arg=0x7fdcc61ed700) at pthread_create.c:311 #11 0x00007fdce9f179cd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113 Thread 2 (Thread 0x7fdcc59ec700 (LWP 3885)): #0 0x00007fdce9f0af7d in poll () at ../sysdeps/unix/syscall-template.S:81 #1 0x00007fdce7017694 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #2 0x00007fdce701779c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007fdceb342a76 in QEventDispatcherGlib::processEvents (this=0x7fdcb00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426 #4 0x00007fdceb3145ef in QEventLoop::processEvents (this=this@entry=0x7fdcc59ebd70, flags=...) at kernel/qeventloop.cpp:149 #5 0x00007fdceb3148e5 in QEventLoop::exec (this=this@entry=0x7fdcc59ebd70, flags=...) at kernel/qeventloop.cpp:204 #6 0x00007fdceb21388f in QThread::exec (this=this@entry=0xfd0960) at thread/qthread.cpp:542 #7 0x00007fdceb2f5d13 in QInotifyFileSystemWatcherEngine::run (this=0xfd0960) at io/qfilesystemwatcher_inotify.cpp:265 #8 0x00007fdceb215f2f in QThreadPrivate::start (arg=0xfd0960) at thread/qthread_unix.cpp:338 #9 0x00007fdce76f2f6e in start_thread (arg=0x7fdcc59ec700) at pthread_create.c:311 #10 0x00007fdce9f179cd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113 Thread 1 (Thread 0x7fdcec6877c0 (LWP 3833)): [KCrash Handler] #6 QString (other=<error reading variable: Cannot access memory at address 0x10>, this=this@entry=0x7fff1c32b4b0) at /usr/include/qt4/QtCore/qstring.h:725 #7 KScreen::Mode::id (this=this@entry=0x0) at /build/buildd/libkscreen-1.0.1/src/mode.cpp:50 #8 0x00007fdcd0186c77 in Generator::displaySwitch (this=0xeea630, iteration=iteration@entry=1) at /build/buildd/kscreen-1.0.1/kded/generator.cpp:164 #9 0x00007fdcd01805af in KScreenDaemon::applyGenericConfig (this=<optimized out>) at /build/buildd/kscreen-1.0.1/kded/daemon.cpp:161 #10 0x00007fdceb329a58 in QMetaObject::activate (sender=0xec16b0, m=<optimized out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3539 #11 0x00007fdceb32dbe1 in QObject::event (this=0xec16b0, e=<optimized out>) at kernel/qobject.cpp:1156 #12 0x00007fdcea6b2dfc in QApplicationPrivate::notify_helper (this=this@entry=0xcda1e0, receiver=receiver@entry=0xec16b0, e=e@entry=0x7fff1c32ba30) at kernel/qapplication.cpp:4567 #13 0x00007fdcea6b9470 in QApplication::notify (this=this@entry=0x7fff1c32bde0, receiver=receiver@entry=0xec16b0, e=e@entry=0x7fff1c32ba30) at kernel/qapplication.cpp:4353 #14 0x00007fdcec093a6a in KApplication::notify (this=0x7fff1c32bde0, receiver=0xec16b0, event=0x7fff1c32ba30) at ../../kdeui/kernel/kapplication.cpp:311 #15 0x00007fdceb3158bd in QCoreApplication::notifyInternal (this=0x7fff1c32bde0, receiver=0xec16b0, event=0x7fff1c32ba30) at kernel/qcoreapplication.cpp:946 #16 0x00007fdceb345403 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231 #17 QTimerInfoList::activateTimers (this=0xcdb8d0) at kernel/qeventdispatcher_unix.cpp:622 #18 0x00007fdceb3427d9 in timerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:186 #19 idleTimerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:233 #20 0x00007fdce70173a6 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #21 0x00007fdce70176f8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #22 0x00007fdce701779c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #23 0x00007fdceb342a55 in QEventDispatcherGlib::processEvents (this=0xc37670, flags=...) at kernel/qeventdispatcher_glib.cpp:424 #24 0x00007fdcea7549d6 in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204 #25 0x00007fdceb3145ef in QEventLoop::processEvents (this=this@entry=0x7fff1c32bcb0, flags=...) at kernel/qeventloop.cpp:149 #26 0x00007fdceb3148e5 in QEventLoop::exec (this=this@entry=0x7fff1c32bcb0, flags=...) at kernel/qeventloop.cpp:204 #27 0x00007fdceb319e5b in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1218 #28 0x00007fdcea6b134c in QApplication::exec () at kernel/qapplication.cpp:3828 #29 0x00007fdcd71ac95b in kdemain (argc=1, argv=0xcb5cc0) at ../../kded/kded.cpp:925 #30 0x00000000004083f5 in launch (argc=argc@entry=1, _name=_name@entry=0x40b007 "kded4", args=<optimized out>, args@entry=0x0, cwd=cwd@entry=0x0, envc=envc@entry=0, envs=<optimized out>, envs@entry=0x0, reset_env=reset_env@entry=false, tty=tty@entry=0x0, avoid_loops=avoid_loops@entry=false, startup_id_str=startup_id_str@entry=0x40ae96 "0") at ../../kinit/kinit.cpp:738 #31 0x00000000004059a6 in main (argc=4, argv=<optimized out>, envp=0x7fff1c32c540) at ../../kinit/kinit.cpp:1853 Reported using DrKonqi
What is your version of kscreen (or libkscreen?)
/usr/lib/libkscreen.so.1.0.1 root@dlang-laptop:/home/dlang# dpkg -l |grep kscreen ii kscreen 1.0.1-0ubuntu1 amd64 KDE monitor hotplug and screen handling ii kscreen-dbg 1.0.1-0ubuntu1 amd64 KDE monitor hotplug and screen handling, debug info ii libkscreen-dbg 1.0.1-0ubuntu1 amd64 library for screen management - debug info rc libkscreen0 0.0.92-0ubuntu0.1 amd64 library for screen management - shared library ii libkscreen1 1.0.1-0ubuntu1 amd64 library for screen management - shared library ii libkscreensaver5 4:4.11.2-0ubuntu1 amd64 library of the KDE Screensaver system
For some reason your laptop is sending the signal "Display switch" which makes us try to re-configure your screen. Can you reproduce the crash everytime? if so, could you attach "kscreen-console bug" ? Thanks !
with one of the updates, this has stopped happening. here is the output of kscreen-console bug START This backend is only for XRandR 1.1, your version is: 1 . 3 Config::current() took 9 milliseconds ========================xrandr --verbose========================== Screen 0: minimum 8 x 8, current 1680 x 1050, maximum 8192 x 8192 VGA-0 disconnected (normal left inverted right x axis y axis) Identifier: 0x249 Timestamp: 31199 Subpixel: unknown Clones: CRTCs: 0 1 Transform: 1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000 filter: BorderDimensions: 4 supported: 4 Border: 0 0 0 0 range: (0, 65535) SignalFormat: VGA supported: VGA ConnectorType: VGA ConnectorNumber: 1 _ConnectorLocation: 1 LVDS-0 connected primary 1680x1050+0+0 (0x24b) normal (normal left inverted right x axis y axis) 331mm x 207mm Identifier: 0x24a Timestamp: 31199 Subpixel: unknown Gamma: 1.0:1.0:1.0 Brightness: 1.0 Clones: CRTC: 0 CRTCs: 0 1 Transform: 1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000 filter: Backlight: 100 range: (0, 100) EDID: 00ffffffffffff00244d872800000000 000f0103802115780acd7591554f8b26 21505400000001010101010101010101 010101010101a82f90e0601a10402040 13004bcf10000019b72790e0601a1040 204013004bcf100000190000000f00b3 0a32b30a281401004ca35833000000fe 004c544e31353450322d4c30350a00a7 BorderDimensions: 4 supported: 4 Border: 0 0 0 0 range: (0, 65535) SignalFormat: LVDS supported: LVDS ConnectorType: Panel ConnectorNumber: 0 _ConnectorLocation: 0 1680x1050 (0x24b) 122.0MHz -HSync -VSync *current +preferred h: width 1680 start 1712 end 1776 total 1904 skew 0 clock 64.1KHz v: height 1050 start 1051 end 1054 total 1066 clock 60.1Hz 1680x1050 (0x24c) 101.7MHz -HSync -VSync h: width 1680 start 1712 end 1776 total 1904 skew 0 clock 53.4KHz v: height 1050 start 1051 end 1054 total 1066 clock 50.1Hz DVI-D-0 disconnected (normal left inverted right x axis y axis) Identifier: 0x24d Timestamp: 31199 Subpixel: unknown Clones: CRTCs: 0 1 Transform: 1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000 filter: BorderDimensions: 4 supported: 4 Border: 0 0 0 0 range: (0, 65535) SignalFormat: TMDS supported: TMDS ConnectorType: DVI-D ConnectorNumber: 2 _ConnectorLocation: 2 ========================Outputs=================================== KScreen version: 1.0.1 Screen: maxSize: QSize(8192, 8192) minSize: QSize(8, 8) currentSize: QSize(1680, 1050) ----------------------------------------------------- Id: 585 Name: "VGA-0" Type: "VGA" Connected: false ----------------------------------------------------- Id: 586 Name: "LVDS-0" Type: "Panel (Laptop)" Connected: true Enabled: true Primary: true Rotation: 1 Pos: QPoint(0,0) Size: QSize(1680, 1050) Clones: None Mode: "587" Preferred Mode: "587" Preferred modes: ("587") Modes: "587" "1680x1050" QSize(1680, 1050) 60.1085 "588" "1680x1050" QSize(1680, 1050) 50.092 EDID Info: Device ID: "xrandr-IBM Brasil" Name: "" Vendor: "IBM Brasil" Serial: "" EISA ID: "LTN154P2-L05" Hash: "e1865128c7cd5e5ed49ecfc8102f6f9c" Width: 33 Height: 21 Gamma: 2 Red: QQuaternion(scalar:1, vector:(0.569336, 0.332031, 0)) Green: QQuaternion(scalar:1, vector:(0.311523, 0.543945, 0)) Blue: QQuaternion(scalar:1, vector:(0.149414, 0.131836, 0)) White: QQuaternion(scalar:1, vector:(0.313477, 0.329102, 0)) ----------------------------------------------------- Id: 589 Name: "DVI-D-0" Type: "Invalid Type" Connected: false ========================Configurations============================ Configs in: "/home/dlang/.kde/share/apps/kscreen/" Number of files: 5 "0dfbb19cd0d48c5ec26951d21d477f13" "[ { "enabled" : true, "id" : "7004fa53d6644e9a21281d529d445e35", "metadata" : { "fullname" : "xrandr-Tandberg-C60", "name" : "VGA-0" }, "mode" : { "refresh" : 60.0, "size" : { "height" : 1080, "width" : 1920 } }, "pos" : { "x" : 1680, "y" : 0 }, "primary" : false, "rotation" : 1 }, { "enabled" : true, "id" : "e1865128c7cd5e5ed49ecfc8102f6f9c", "metadata" : { "fullname" : "xrandr-IBM Brasil", "name" : "LVDS-0" }, "mode" : { "refresh" : 60.1085, "size" : { "height" : 1050, "width" : 1680 } }, "pos" : { "x" : 0, "y" : 0 }, "primary" : true, "rotation" : 1 } ]" "2ef03ac65640009d076c964043031d1f" "[ { "enabled" : true, "id" : "e1865128c7cd5e5ed49ecfc8102f6f9c", "metadata" : { "fullname" : "xrandr-IBM Brasil", "name" : "LVDS-0" }, "mode" : { "refresh" : 60.1085, "size" : { "height" : 1050, "width" : 1680 } }, "pos" : { "x" : 0, "y" : 0 }, "primary" : true, "rotation" : 1 } ]" "54ab43ff0185eed8ebfb6e684291bf48" "[ { "enabled" : true, "id" : "VGA-0", "metadata" : { "name" : "VGA-0" }, "mode" : { "refresh" : 60.0, "size" : { "height" : 1080, "width" : 1920 } }, "pos" : { "x" : 1680, "y" : 0 }, "primary" : false, "rotation" : 1 }, { "enabled" : true, "id" : "e1865128c7cd5e5ed49ecfc8102f6f9c", "metadata" : { "fullname" : "xrandr-IBM Brasil", "name" : "LVDS-0" }, "mode" : { "refresh" : 60.1085, "size" : { "height" : 1050, "width" : 1680 } }, "pos" : { "x" : 0, "y" : 0 }, "primary" : true, "rotation" : 1 } ]" "617e89b9947db45509ea33bb671d25af" "[ { "enabled" : true, "id" : "e1865128c7cd5e5ed49ecfc8102f6f9c", "metadata" : { "fullname" : "xrandr-IBM Brasil", "name" : "LVDS-0" }, "mode" : { "refresh" : 60.1085, "size" : { "height" : 1050, "width" : 1680 } }, "pos" : { "x" : 0, "y" : 0 }, "primary" : true, "rotation" : 1 }, { "enabled" : false, "id" : "bd0f657fc93d058cd463fa124cf83488", "metadata" : { "fullname" : "xrandr-E3D420VX-UKLWAM010000", "name" : "VGA-0" }, "pos" : { "x" : 1680, "y" : 0 }, "primary" : false, "rotation" : 1 } ]" "da112c7bf6c1efc440d4a20f7ee7989c" "[ { "enabled" : false, "id" : "023907d071906348dc641916a3ad1af5", "metadata" : { "fullname" : "xrandr-Lenovo Group Limited-LEN D221 Wid-V1C2889", "name" : "VGA-0" }, "pos" : { "x" : 0, "y" : 0 }, "primary" : false, "rotation" : 1 }, { "enabled" : true, "id" : "e1865128c7cd5e5ed49ecfc8102f6f9c", "metadata" : { "fullname" : "xrandr-IBM Brasil", "name" : "LVDS-0" }, "mode" : { "refresh" : 60.1085, "size" : { "height" : 1050, "width" : 1680 } }, "pos" : { "x" : 0, "y" : 0 }, "primary" : true, "rotation" : 1 } ]"
Alex, does comment #4 provide the requested information? Please set the bug status.
No reply, changing status.
Git commit 9a4f36f6973d6f9d712b6b3b1ff30f868d9910b9 by Dan Vrátil. Committed on 06/03/2015 at 13:30. Pushed by dvratil into branch 'Plasma/5.2'. KDED: Make Generator maximally fool-proof This change adds lots of checks (and asserts for devs) on validity of the configs, outputs and modes and makes sure that we never try to dereference a null pointer from outputs or modes. Also renames some variables to make the code cleaner and easier to understand. Related: bug 326120, bug 327075, bug 33716 FIXED-IN: 5.2.2 M +183 -84 kded/generator.cpp M +9 -7 kded/generator.h http://commits.kde.org/kscreen/9a4f36f6973d6f9d712b6b3b1ff30f868d9910b9