This bug is related to bug #247991.
I have upgraded my system to last 12.2 and last ports with the same result. All qt5 applications crash with Segmentation fault (DRI2) or Bus error (DRI3+SNA).
I have tried to rebuild qt5 (5.15.0) from sources to have debug symbol, backtrace is :
#0 0x000000080163fa20 in qt_memfillXX_avx2(unsigned char*, long long
__vector(4), long long) () from /root/qt5/lib/libQt5Gui.so.5
#1 0x00000008018bc2d5 in fillRect_normalized(QRect const&, QSpanData*,
QRasterPaintEnginePrivate*) () from /root/qt5/lib/libQt5Gui.so.5
#2 0x00000008018bdcd6 in QRasterPaintEngine::fillRect(QRectF const&,
QSpanData*) () from /root/qt5/lib/libQt5Gui.so.5
#3 0x00000008018e1a9c in QPainter::fillRect(QRect const&, QBrush const&) ()
#4 0x00000008010c04be in fillRegion(QPainter*, QRegion const&, QBrush
() from /root/qt5/lib/libQt5Widgets.so.5
#5 0x00000008010c017f in QWidgetPrivate::paintBackground(QPainter*,
QRegion const&, QFlags<QWidgetPrivate::DrawWidgetFlag>) const ()
Similar issue with qt5 5.14.2. Of course, I have tried to rebuilt qt5 with different build options without any success. My graphic adapter is internal GPU of a i5-4570S CPU.
Option "AccelMethod" "SNA"
Option "DRI" "3"
(In reply to BERTRAND Joël from comment #0)
Current version of qt is 5.15.2 now.
Now, this workstation runs with 5.15.2 and I see exactly the same issue. I have tried with intel and modesetting drivers. Same result.
This workstation is a diskless one but I'm not sure this information is relevant.