Hi Juan,
after starting the docuemnt browser I often run into an assertion as shown below. Seems to be an problem between the qt5 webengine and the nouveau driver?
https://www.linuxquestions.org/questions/slackware-14/crashes-with-qt5-webengine-and-nouveau-fix-inside-4175582723/Klaus
(gdb) bt
#0 0x00007f87dc4b6428 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:54
#1 0x00007f87dc4b802a in __GI_abort () at abort.c:89
#2 0x00007f87dc4aebd7 in __assert_fail_base (fmt=<optimized out>, assertion=assertion@entry=0x7f87cc698729 "kref", file=file@entry=0x7f87cc69870a "../../nouveau/pushbuf.c",
line=line@entry=727, function=function@entry=0x7f87cc698750 "nouveau_pushbuf_data") at assert.c:92
#3 0x00007f87dc4aec82 in __GI___assert_fail (assertion=0x7f87cc698729 "kref", file=0x7f87cc69870a "../../nouveau/pushbuf.c", line=727,
function=0x7f87cc698750 "nouveau_pushbuf_data") at assert.c:101
#4 0x00007f87cc696b04 in nouveau_pushbuf_data () from /usr/lib/x86_64-linux-gnu/libdrm_nouveau.so.2
#5 0x00007f87cc696a4b in nouveau_pushbuf_data () from /usr/lib/x86_64-linux-gnu/libdrm_nouveau.so.2
#6 0x00007f87cc696b99 in ?? () from /usr/lib/x86_64-linux-gnu/libdrm_nouveau.so.2
#7 0x00007f87cc696e3f in ?? () from /usr/lib/x86_64-linux-gnu/libdrm_nouveau.so.2
#8 0x00007f87cc697a00 in nouveau_pushbuf_kick () from /usr/lib/x86_64-linux-gnu/libdrm_nouveau.so.2
#9 0x00007f87cd067ab6 in ?? () from /usr/lib/x86_64-linux-gnu/dri/nouveau_dri.so
#10 0x00007f87ccd481c6 in ?? () from /usr/lib/x86_64-linux-gnu/dri/nouveau_dri.so
#11 0x00007f87cce8e782 in ?? () from /usr/lib/x86_64-linux-gnu/dri/nouveau_dri.so
#12 0x00007f87da9c74cc in ?? () from /usr/lib/x86_64-linux-gnu/mesa/libGL.so.1
#13 0x00007f87e90cf68a in QGLXContext::swapBuffers(QPlatformSurface*) () from /opt/PixInsight/bin/lib/qt-plugins/xcbglintegrations/libqxcb-glx-integration.so
#14 0x00007f87de12a55d in QOpenGLContext::swapBuffers(QSurface*) () from /opt/PixInsight/bin/lib/libQt5Gui.so.5
#15 0x00007f87de38fae6 in QPlatformBackingStore::composeAndFlush(QWindow*, QRegion const&, QPoint const&, QPlatformTextureList*, QOpenGLContext*, bool) ()
from /opt/PixInsight/bin/lib/libQt5Gui.so.5
#16 0x00007f87cea3c949 in QXcbBackingStore::composeAndFlush(QWindow*, QRegion const&, QPoint const&, QPlatformTextureList*, QOpenGLContext*, bool) ()
from /opt/PixInsight/bin/lib/libQt5XcbQpa.so.5
#17 0x00007f87de6f9fef in QWidgetBackingStore::qt_flush(QWidget*, QRegion const&, QBackingStore*, QWidget*, QPoint const&, QPlatformTextureList*, QWidgetBackingStore*) ()
from /opt/PixInsight/bin/lib/libQt5Widgets.so.5
---Type <return> to continue, or q <return> to quit---
#18 0x00007f87de6fb548 in QWidgetBackingStore::flush(QWidget*) () from /opt/PixInsight/bin/lib/libQt5Widgets.so.5
#19 0x00007f87de6fc250 in QWidgetBackingStore::doSync() () from /opt/PixInsight/bin/lib/libQt5Widgets.so.5
#20 0x00007f87de6fd8c9 in QWidgetBackingStore::sync() () from /opt/PixInsight/bin/lib/libQt5Widgets.so.5
#21 0x00007f87de716ebf in QWidgetPrivate::syncBackingStore() () from /opt/PixInsight/bin/lib/libQt5Widgets.so.5
#22 0x00007f87de72b614 in QWidget::event(QEvent*) () from /opt/PixInsight/bin/lib/libQt5Widgets.so.5
#23 0x00007f87de818eeb in QMainWindow::event(QEvent*) () from /opt/PixInsight/bin/lib/libQt5Widgets.so.5
#24 0x00007f87de6ee23c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /opt/PixInsight/bin/lib/libQt5Widgets.so.5
#25 0x00007f87de6f4f80 in QApplication::notify(QObject*, QEvent*) () from /opt/PixInsight/bin/lib/libQt5Widgets.so.5
#26 0x00000000005f1c9f in ?? ()
#27 0x00007f87ddb00275 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /opt/PixInsight/bin/lib/libQt5Core.so.5
#28 0x00007f87ddb025c3 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /opt/PixInsight/bin/lib/libQt5Core.so.5
#29 0x00007f87ddb502d3 in postEventSourceDispatch(_GSource*, int (*)(void*), void*) () from /opt/PixInsight/bin/lib/libQt5Core.so.5
#30 0x00007f87e7112197 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#31 0x00007f87e71123f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#32 0x00007f87e711249c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#33 0x00007f87ddb4fb1c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /opt/PixInsight/bin/lib/libQt5Core.so.5
#34 0x00007f87ddafe6eb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /opt/PixInsight/bin/lib/libQt5Core.so.5
#35 0x00007f87ddb068a4 in QCoreApplication::exec() () from /opt/PixInsight/bin/lib/libQt5Core.so.5
#36 0x0000000000463360 in ?? ()
#37 0x00007f87dc4a1830 in __libc_start_main (main=0x45fe70, argc=1, argv=0x7ffe69c546f8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>,
stack_end=0x7ffe69c546e8) at ../csu/libc-start.c:291
#38 0x000000000048e473 in ?? ()
