Created attachment 167695 [details] journal log containing the core dump SUMMARY *** After update to Plasma 6, kwin_wayland core dumps when starting the session. In contrast a X11 session on runs without issues. *** STEPS TO REPRODUCE 1. Use ArchLinux with SDDM login manager 2. Select wayland session and login OBSERVED RESULT - kwin_wayland core dump - 1st error in log: kernel: traps: kwin_wayland[1656] trap divide error ip:7e033f9c9321 sp:7ffef9cc3e30 error:0 in i965_dri.so[7e033f17c000+8c7000] EXPECTED RESULT - starting graphical wayland session SOFTWARE/OS VERSIONS Linux/KDE Plasma: ArchLinux, Plasma 6 (available in About System) KDE Plasma Version: 6.0.2 KDE Frameworks Version: 6.0.0 Qt Version: 6.6.2 ADDITIONAL INFORMATION
Created attachment 167696 [details] DrKonqi crash dump no 1. First crash dump created while starting a wayland session with Plasma 6. There are 9 more crash dumps from that session login attempt.
Created attachment 167697 [details] DrKonqi crash dump no 2-9 Consecutive crash dumps from a single login attempt to a wayland session.
Also reported here from another guy: https://www.reddit.com/r/kde/comments/1bbbdb3/wayland_doesnt_work_after_updating_to_plasma_6/
Please follow https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports#Retrieving_a_backtrace_using_coredumpctl to get a backtrace with debug symbols for the crash
Created attachment 167778 [details] Core dump with debug information
Thank you #0 isl_tiling_get_info.isra.0 () at ../mesa-21.3.9/src/intel/isl/isl.c:369 #1 0x00007b26364f16c8 in isl_surf_init_s () at ../mesa-21.3.9/src/intel/isl/isl.c:1764 #2 0x00007b2636839afb in brw_create_image_common.isra.0 () at ../mesa-21.3.9/src/mesa/drivers/dri/i965/brw_screen.c:772 #3 0x00007b263e231f54 in loader_dri_create_image () at ../mesa-21.3.9/src/loader/loader_dri_helper.c:61 #4 gbm_dri_bo_create () at ../mesa-21.3.9/src/gbm/backends/dri/gbm_dri.c:1226 #5 0x00007b263e2357db in gbm_bo_create_with_modifiers () at ../mesa-21.3.9/src/gbm/main/gbm.c:514 #6 0x00007b263fb748c5 in KWin::allocateDmaBuf (device=0x61a0ea0aa820, options=...) at /usr/src/debug/kwin/kwin-6.0.2/src/core/gbmgraphicsbufferallocator.cpp:159 #7 0x00007b263fc57837 in KWin::EglSwapchain::create (allocator=0x61a0ea10d1a0, context=0x61a0ea1d4a50, size=..., format=808665688, modifiers=<optimized out>) at /usr/src/debug/kwin/kwin-6.0.2/src/opengl/eglswapchain.cpp:145 #8 0x00007b263fdddf0a in KWin::EglGbmLayerSurface::createGbmSwapchain (this=<optimized out>, gpu=0x61a0ea0aa420, context=0x61a0ea1d4a50, size=..., format=808665688, modifiers=..., importMode=KWin::EglGbmLayerSurface::MultiGpuImportMode::None, bufferTarget=KWin::EglGbmLayerSurface::BufferTarget::Normal) at /usr/include/c++/13.2.1/bits/unique_ptr.h:199 #9 0x00007b263fdd9840 in KWin::EglGbmLayerSurface::createSurface (this=0x61a0ea475ea8, size=..., format=<optimized out>, modifiers=..., importMode=KWin::EglGbmLayerSurface::MultiGpuImportMode::None, bufferTarget=KWin::EglGbmLayerSurface::BufferTarget::Normal) at /usr/src/debug/kwin/kwin-6.0.2/src/backends/drm/drm_egl_layer_surface.cpp:446 #10 0x00007b263fdda0b0 in KWin::EglGbmLayerSurface::createSurface(QSize const&, QMap<unsigned int, QList<unsigned long> > const&) const::{lambda(QList<KWin::FormatInfo> const&, KWin::EglGbmLayerSurface::MultiGpuImportMode)#1}::operator()(QList<KWin::FormatInfo> const&, KWin::EglGbmLayerSurface::MultiGpuImportMode) const () at /usr/include/qt6/QtCore/qarraydatapointer.h:413 #11 0x00007b263fdda472 in KWin::EglGbmLayerSurface::createSurface(QSize const&, QMap<unsigned int, QList<unsigned long> > const&) const::{lambda(QList<KWin::FormatInfo>&)#1}::operator()(QList<KWin::FormatInfo>&) const () at /usr/src/debug/kwin/kwin-6.0.2/src/backends/drm/drm_egl_layer_surface.cpp:377 #12 0x00007b263fddaa2b in KWin::EglGbmLayerSurface::createSurface (formats=..., size=..., this=0x61a0ea475ea8) at /usr/src/debug/kwin/kwin-6.0.2/src/backends/drm/drm_egl_layer_surface.cpp:397 #13 KWin::EglGbmLayerSurface::checkSurface (this=this@entry=0x61a0ea475ea8, size=..., formats=...) at /usr/src/debug/kwin/kwin-6.0.2/src/backends/drm/drm_egl_layer_surface.cpp:274 #14 0x00007b263fddaea3 in KWin::EglGbmLayerSurface::renderTestBuffer (formats=..., bufferSize=..., this=0x61a0ea475ea8) at /usr/src/debug/kwin/kwin-6.0.2/src/backends/drm/drm_egl_layer_surface.cpp:251 #15 KWin::EglGbmLayer::checkTestBuffer (this=0x61a0ea475e30) at /usr/src/debug/kwin/kwin-6.0.2/src/backends/drm/drm_egl_layer.cpp:81 #16 0x00007b263fdefffd in KWin::DrmPipeline::prepareAtomicPresentation (this=0x61a0ea2f1510, commit=0x61a0ea4f9b40) at /usr/src/debug/kwin/kwin-6.0.2/src/backends/drm/drm_pipeline.cpp:245 #17 0x00007b263fdf2018 in KWin::DrmPipeline::prepareAtomicCommit (this=0x61a0ea2f1510, commit=commit@entry=0x61a0ea4f9b40, mode=mode@entry=KWin::DrmPipeline::CommitMode::TestAllowModeset) at /usr/src/debug/kwin/kwin-6.0.2/src/backends/drm/drm_pipeline.cpp:192 #18 0x00007b263fdf2358 in KWin::DrmPipeline::commitPipelinesAtomic (pipelines=..., mode=KWin::DrmPipeline::CommitMode::TestAllowModeset, unusedObjects=...) at /usr/src/debug/kwin/kwin-6.0.2/src/backends/drm/drm_pipeline.cpp:139 #19 0x00007b263fde2f80 in KWin::DrmPipeline::commitPipelines (unusedObjects=..., mode=KWin::DrmPipeline::CommitMode::TestAllowModeset, pipelines=...) at /usr/src/debug/kwin/kwin-6.0.2/src/backends/drm/drm_pipeline.cpp:119 #20 KWin::DrmGpu::testPipelines (this=0x61a0ea0aa420) at /usr/src/debug/kwin/kwin-6.0.2/src/backends/drm/drm_gpu.cpp:467 #21 KWin::DrmGpu::checkCrtcAssignment (this=this@entry=0x61a0ea0aa420, connectors=..., crtcs=...) at /usr/src/debug/kwin/kwin-6.0.2/src/backends/drm/drm_gpu.cpp:386 #22 0x00007b263fde2db9 in KWin::DrmGpu::checkCrtcAssignment (this=this@entry=0x61a0ea0aa420, connectors=..., crtcs=...) at /usr/include/qt6/QtCore/qarraydata.h:53 #23 0x00007b263fde2db9 in KWin::DrmGpu::checkCrtcAssignment (this=this@entry=0x61a0ea0aa420, connectors=..., crtcs=...) at /usr/include/qt6/QtCore/qarraydata.h:53 #24 0x00007b263fde2db9 in KWin::DrmGpu::checkCrtcAssignment (this=this@entry=0x61a0ea0aa420, connectors=..., crtcs=...) at /usr/include/qt6/QtCore/qarraydata.h:53 #25 0x00007b263fde2db9 in KWin::DrmGpu::checkCrtcAssignment (this=this@entry=0x61a0ea0aa420, connectors=..., crtcs=...) at /usr/include/qt6/QtCore/qarraydata.h:53 #26 0x00007b263fde3241 in KWin::DrmGpu::checkCrtcAssignment (this=this@entry=0x61a0ea0aa420, connectors=..., crtcs=...) at /usr/src/debug/kwin/kwin-6.0.2/src/backends/drm/drm_gpu.cpp:408 #27 0x00007b263fde3703 in KWin::DrmGpu::testPendingConfiguration (this=0x61a0ea0aa420) at /usr/include/qt6/QtCore/qarraydata.h:53 #28 0x00007b263fdc68ba in KWin::DrmGpu::updateOutputs (this=<optimized out>) at /usr/src/debug/kwin/kwin-6.0.2/src/backends/drm/drm_gpu.cpp:326 #29 KWin::DrmGpu::updateOutputs (this=<optimized out>) at /usr/src/debug/kwin/kwin-6.0.2/src/backends/drm/drm_gpu.cpp:239 #30 KWin::DrmBackend::updateOutputs (this=0x7b2630009b80) at /usr/src/debug/kwin/kwin-6.0.2/src/backends/drm/drm_backend.cpp:257 #31 0x00007b263d590ca9 in QtPrivate::QSlotObjectBase::call (a=0x7ffec75d4238, r=0x7b2630009b80, this=0x61a0ea41b510, this=<optimized out>, r=<optimized out>, a=<optimized out>) at /usr/src/debug/qt6-base/qtbase-everywhere-src-6.6.2/src/corelib/kernel/qobjectdefs_impl.h:433 #32 doActivate<false> (sender=0x61a0ea17d5a0, signal_index=6, argv=0x7ffec75d4238) at /usr/src/debug/qt6-base/qtbase-everywhere-src-6.6.2/src/corelib/kernel/qobject.cpp:4039 #33 0x00007b263fb691e9 in KWin::WaylandCompositor::start (this=0x61a0ea17d5a0) at /usr/src/debug/kwin/kwin-6.0.2/src/compositor_wayland.cpp:190 #34 0x00007b263d57c2c7 in QObject::event (this=0x61a0ea17d5a0, e=0x61a0ea219eb0) at /usr/src/debug/qt6-base/qtbase-everywhere-src-6.6.2/src/corelib/kernel/qobject.cpp:1437 #35 0x00007b263e4f438b in QApplicationPrivate::notify_helper (this=<optimized out>, receiver=0x61a0ea17d5a0, e=0x61a0ea219eb0) at /usr/src/debug/qt6-base/qtbase-everywhere-src-6.6.2/src/widgets/kernel/qapplication.cpp:3296 #36 0x00007b263d539818 in QCoreApplication::notifyInternal2 (receiver=0x61a0ea17d5a0, event=event@entry=0x61a0ea219eb0) at /usr/src/debug/qt6-base/qtbase-everywhere-src-6.6.2/src/corelib/kernel/qcoreapplication.cpp:1121 #37 0x00007b263d539b9b in QCoreApplication::sendEvent (event=0x61a0ea219eb0, receiver=<optimized out>) at /usr/src/debug/qt6-base/qtbase-everywhere-src-6.6.2/src/corelib/kernel/qcoreapplication.cpp:1539 #38 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x61a0e9fe0430) at /usr/src/debug/qt6-base/qtbase-everywhere-src-6.6.2/src/corelib/kernel/qcoreapplication.cpp:1901 #39 0x00007b263d69f18f in QEventDispatcherUNIX::processEvents (this=0x61a0ea018840, flags=flags@entry=...) at /usr/src/debug/qt6-base/qtbase-everywhere-src-6.6.2/src/corelib/kernel/qeventdispatcher_unix.cpp:431 #40 0x00007b263dfb26e2 in QUnixEventDispatcherQPA::processEvents (this=<optimized out>, flags=...) at /usr/src/debug/qt6-base/qtbase-everywhere-src-6.6.2/src/gui/platform/unix/qunixeventdispatcher.cpp:27 #41 0x00007b263d543d6e in QEventLoop::processEvents (flags=..., this=0x7ffec75d4710) at /usr/src/debug/qt6-base/qtbase-everywhere-src-6.6.2/src/corelib/kernel/qeventloop.cpp:100 #42 QEventLoop::exec (this=0x7ffec75d4710, flags=...) at /usr/src/debug/qt6-base/qtbase-everywhere-src-6.6.2/src/corelib/kernel/qeventloop.cpp:182 #43 0x00007b263d53c2b8 in QCoreApplication::exec () at /usr/src/debug/qt6-base/qtbase-everywhere-src-6.6.2/src/corelib/global/qflags.h:74 #44 0x00007b263e4f0f0a in QApplication::exec () at /usr/src/debug/qt6-base/qtbase-everywhere-src-6.6.2/src/widgets/kernel/qapplication.cpp:2574 #45 0x000061a0e8e05dee in main (argc=<optimized out>, argv=<optimized out>) at /usr/src/debug/kwin/kwin-6.0.2/src/main_wayland.cpp:609
This crash occurs when using the combination of KDE6 + intel-graphics (i965) + Wayland + mesa-amber. I noticed that uninstalling mesa-amber and installing mesa instead resolves the issue, allowing to run a Wayland session on KDE6 successfully. Given the fact that mesa-amber is no longer actively maintained and using mesa works just fine, we may close this issue.