Hello,
Thank your for your fast answer. Indeed, the NULL value for abstime seems totally unrelated... I was made wrong by the trace colored it in red... I thank your for the links you provided, they are quite interesting. This a pain that the big seems really complex and I do not have any knowledge in DRM and nouveau... I will go on with the environment variables as workaround if kmail really crashes a lot. Best regards. Le mardi 9 juillet 2019, 00:19:32 CEST Bernhard Übelacker a écrit : > Hello Francis Laniel, > I am just looking at some crashes in some random packages, > and found this nouveau issue familiar. > > I guess __pthread_cond_wait_common should be able to > handle a NULL for abstime - e.g. should "Block without a timeout". > > https://sources.debian.org/src/glibc/2.28-10/nptl/pthread_cond_wait.c/#L499 > > There are also some many more bugs reported that all end with these > nouveau_pushbuf_kick/nouveau_pushbuf_data calls triggering > that "Assertion `kref' failed.", that might be related: > https://bugs.debian.org/927954 > https://bugs.debian.org/929130 > https://bugs.freedesktop.org/show_bug.cgi?id=91632 > https://bugs.freedesktop.org/show_bug.cgi?id=98039 > https://bugzilla.redhat.com/show_bug.cgi?id=1350275 > https://bugs.archlinux.org/task/59057 > https://bugreports.qt.io/browse/QTBUG-41242 > > The last one mentions as a workaround setting an > environment variable LIBGL_ALWAYS_SOFTWARE=1 or > QT_XCB_FORCE_SOFTWARE_OPENGL=1, maybe on of these still helps? > > Kind regards, > Bernhard