fvogt added a comment.
Ok, now both AMS and no-AMS cases result in the same crash. libepoxy terminates kwin_wayland due to `Couldn't find current GLX or EGL context`: #0 0x00007ffff4ee3260 in errx () from /lib64/libc.so.6 #1 0x00007ffff0c32c8c in ?? () from /usr/lib64/libepoxy.so.0 #2 0x00007ffff0c15d2d in ?? () from /usr/lib64/libepoxy.so.0 #3 0x00007ffff4b9fafa in KWin::ContrastShader::reset (this=this@entry=0x7fffb804c530) at /usr/src/debug/kwin-5.11.90git.20171111T192901~320602ae1/effects/backgroundcontrast/contrastshader.cpp:53 #4 0x00007ffff4b9fb43 in KWin::ContrastShader::~ContrastShader (this=0x7fffb804c530, __in_chrg=<optimized out>) at /usr/src/debug/kwin-5.11.90git.20171111T192901~320602ae1/effects/backgroundcontrast/contrastshader.cpp:43 #5 KWin::ContrastShader::~ContrastShader (this=0x7fffb804c530, __in_chrg=<optimized out>) at /usr/src/debug/kwin-5.11.90git.20171111T192901~320602ae1/effects/backgroundcontrast/contrastshader.cpp:44 #6 0x00007ffff4b9c581 in KWin::ContrastEffect::~ContrastEffect (this=0x5555562795a0, __in_chrg=<optimized out>) at /usr/src/debug/kwin-5.11.90git.20171111T192901~320602ae1/effects/backgroundcontrast/contrast.cpp:77 #7 0x00007ffff4b9c619 in KWin::ContrastEffect::~ContrastEffect (this=0x5555562795a0, __in_chrg=<optimized out>) at /usr/src/debug/kwin-5.11.90git.20171111T192901~320602ae1/effects/backgroundcontrast/contrast.cpp:78 #8 0x00007ffff7a7888b in KWin::EffectsHandlerImpl::unloadEffect (this=this@entry=0x555556153120, name=...) at /usr/src/debug/kwin-5.11.90git.20171111T192901~320602ae1/effects.cpp:1343 #9 0x00007ffff7a78b77 in KWin::EffectsHandlerImpl::reloadEffect (this=0x555556153120, effect=<optimized out>) at /usr/src/debug/kwin-5.11.90git.20171111T192901~320602ae1/effects.cpp:1410 #10 0x00007ffff4b9e6af in KWin::ContrastEffect::slotScreenGeometryChanged (this=0x5555562795a0) at /usr/src/debug/kwin-5.11.90git.20171111T192901~320602ae1/effects/backgroundcontrast/contrast.cpp:84 #11 0x00007ffff5a0feea in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib64/libQt5Core.so.5 #12 0x00007ffff74d4635 in KWin::EffectsHandler::screenGeometryChanged (this=<optimized out>, _t1=...) at /usr/src/debug/kwin-5.11.90git.20171111T192901~320602ae1/build/libkwineffects/kwineffects_autogen/EWIEGA46WW/moc_kwineffects.cpp:1555 #13 0x00007ffff7a71d2d in KWin::EffectsHandlerImpl::desktopResized (this=<optimized out>, size=...) at /usr/src/debug/kwin-5.11.90git.20171111T192901~320602ae1/effects.cpp:785 #14 0x00007ffff7a460c9 in KWin::Workspace::desktopResized (this=0x5555558f2ff0) at /usr/src/debug/kwin-5.11.90git.20171111T192901~320602ae1/geometry.cpp:87 #15 0x00007ffff5a0feea in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib64/libQt5Core.so.5 #16 0x00007fffdccc805c in KWin::DrmBackend::configurationChangeRequested (this=0x5555557c4dd0, config=0x555556181030) at /usr/src/debug/kwin-5.11.90git.20171111T192901~320602ae1/plugins/platforms/drm/drm_backend.cpp:534 #17 0x00007ffff5a0ffec in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib64/libQt5Core.so.5 #18 0x00007ffff6e11a9f in KWayland::Server::OutputManagementInterface::configurationChangeRequested(KWayland::Server::OutputConfigurationInterface*) () from /usr/lib64/libKF5WaylandServer.so.5 #19 0x00007fffe73cf6bd in ?? () from /usr/lib64/libffi.so.7 #20 0x00007fffe73cebcf in ?? () from /usr/lib64/libffi.so.7 #21 0x00007fffede090ab in ?? () from /usr/lib64/libwayland-server.so.0 #22 0x00007fffede058ef in ?? () from /usr/lib64/libwayland-server.so.0 #23 0x00007fffede07282 in wl_event_loop_dispatch () from /usr/lib64/libwayland-server.so.0 #24 0x00007ffff6dd652e in KWayland::Server::Display::Private::dispatch() () from /usr/lib64/libKF5WaylandServer.so.5 and kwin_wayland doesn't handle the call to exit well as it crashes during global object destruction: #0 0x00007fffd67abcf0 in ?? () #1 0x00007fffdccdf29b in KWin::DrmSurfaceBuffer::releaseGbm (this=0x5555560c2280) at /usr/src/debug/kwin-5.11.90git.20171111T192901~320602ae1/plugins/platforms/drm/drm_buffer_gbm.cpp:64 #2 KWin::DrmSurfaceBuffer::~DrmSurfaceBuffer (this=0x5555560c2280, __in_chrg=<optimized out>) at /usr/src/debug/kwin-5.11.90git.20171111T192901~320602ae1/plugins/platforms/drm/drm_buffer_gbm.cpp:59 #3 0x00007fffdccdf379 in KWin::DrmSurfaceBuffer::~DrmSurfaceBuffer (this=0x5555560c2280, __in_chrg=<optimized out>) at /usr/src/debug/kwin-5.11.90git.20171111T192901~320602ae1/plugins/platforms/drm/drm_buffer_gbm.cpp:60 #4 0x00007fffdccd160b in KWin::DrmOutput::~DrmOutput (this=0x555555899eb0, __in_chrg=<optimized out>) at /usr/src/debug/kwin-5.11.90git.20171111T192901~320602ae1/plugins/platforms/drm/drm_output.cpp:75 #5 0x00007fffdccd1679 in KWin::DrmOutput::~DrmOutput (this=0x555555899eb0, __in_chrg=<optimized out>) at /usr/src/debug/kwin-5.11.90git.20171111T192901~320602ae1/plugins/platforms/drm/drm_output.cpp:87 #6 0x00007fffdccc704f in qDeleteAll<KWin::DrmOutput* const*> (end=<optimized out>, begin=0x5555558bb388) at /usr/include/qt5/QtCore/qalgorithms.h:320 #7 qDeleteAll<QVector<KWin::DrmOutput*> > (c=...) at /usr/include/qt5/QtCore/qalgorithms.h:328 #8 KWin::DrmBackend::~DrmBackend (this=0x5555557c4f00, __in_chrg=<optimized out>) at /usr/src/debug/kwin-5.11.90git.20171111T192901~320602ae1/plugins/platforms/drm/drm_backend.cpp:91 #9 0x00007fffdccc7319 in KWin::DrmBackend::~DrmBackend (this=0x5555557c4f00, __in_chrg=<optimized out>) at /usr/src/debug/kwin-5.11.90git.20171111T192901~320602ae1/plugins/platforms/drm/drm_backend.cpp:97 REPOSITORY R108 KWin BRANCH drm-property-safety REVISION DETAIL https://phabricator.kde.org/D8752 To: graesslin, #kwin, #plasma, fvogt, subdiff Cc: plasma-devel, kwin, bwowk, ZrenBot, progwolff, lesliezhai, ali-mohamed, hardening, jensreuterberg, abetts, sebas, apol, mart