DragonFly kernel List (threaded) for 2004-04
nvidia machdep.c patch still useful ?
My apologies if this has already been discussed but ...
There is a patch in the nvidia driver distribution that looks like so -
RCS file: /home/ncvs/src/sys/i386/i386/machdep.c,v
retrieving revision 1.385.2.28
diff -d -u -r1.385.2.28 machdep.c
--- machdep.c 22 Jan 2003 20:14:52 -0000 1.385.2.28
+++ machdep.c 8 May 2003 20:05:06 -0000
@@ -742,8 +742,6 @@
regs->tf_cs = _ucodesel;
regs->tf_ds = _udatasel;
regs->tf_es = _udatasel;
- regs->tf_fs = _udatasel;
regs->tf_ss = _udatasel;
The explanation reads -
Q: Why do KDE applications crash on exit?
A: The FreeBSD signal handler resets the %gs segment register,
which prevents OpenGL from properly accessing data during shutdown
from a signal handler. To fix this problem on a -STABLE kernel,
you can apply this patch:
to sys/i386/i386/machdep.c and rebuild your kernel.
The patch can be applied like this:
patch -p0 -i /usr/X11R6/share/doc/NVIDIA/machdep.c.diff
This change has already been made in recent -CURRENT kernel sources.
Interestingly I do see some of my KDE apps segfaulting on exit. Not sure
if it's the same issue, but when I apply the patch the segfaulting stops.
Unfortunately during my tests my X display locked up after a short while -
hence my question to the list. I guess to really figure this out I need
to get a serial console going ...