X+mga lockup on 8-current

[NAKAJI Hiroyuki]

>>>>> In <1224645840.1639.24.camel at wombat.2hip.net> 
>>>>>	Robert Noland <rnoland at FreeBSD.org> wrote:

> > My video card is Matrox G550 using xf86-video-mga driver. And my
> > 8-current box is updated on Oct 20.
> > 
> > FreeBSD roddy.4407.kankyo-u.ac.jp 8.0-CURRENT FreeBSD 8.0-CURRENT #150:
> > Mon Oct 20 10:21:28 JST 2008
> > root at roddy.4407.kankyo-u.ac.jp:/usr/obj/usr/src/sys/RODDY  i386
> > 
> > I've just updated the kernel and userland only. I rebuilt all xorg staff
> > with the latest ports-current, but nothing resolved. /var/log/Xorg.0.log
> > says many times,
> > 
> > tossed event which came in late
> > mieqEnequeue: out-of-order valuator event; dropping.
> > 
> > Any help is appreciated. Thanks.

> First thing, disable drm and see if the problem goes away.  If it does,
> then boot the machine with X disabled.  Then kldload mga and set
> hw.dri.0.debug=1.  Then startx and send me or post the logs.

> I don't have a 550, but I can try and check my g450 this weekend.

Thank you. But today's kernel does not build. I'll try later.

Because of this change?
http://lists.freebsd.org/pipermail/svn-src-head/2008-October/000275.html

cc -c -O -pipe  -std=c99 -g -Wall -Wredundant-decls -Wnested-externs -Wstrict-prototypes  -Wmissing-prototypes -Wpointer-arith -Winline -Wcast-qual  -Wundef -Wno-pointer-sign -fformat-extensions -nostdinc  -I. -I/usr/src/sys -I/usr/src/sys/contrib/altq -D_KERNEL -DHAVE_KERNEL_OPTION_HEADERS -include opt_global.h -fno-common -finline-limit=8000 --param inline-unit-growth=100 --param large-function-growth=1000  -mno-align-long-strings -mpreferred-stack-boundary=2  -mno-mmx -mno-3dnow -mno-sse -mno-sse2 -mno-sse3 -ffreestanding -fstack-protector -Werror  /usr/src/sys/dev/ppbus/ppi.c
cc1: warnings being treated as errors
/usr/src/sys/dev/ppbus/ppi.c: In function 'ppi_attach':
/usr/src/sys/dev/ppbus/ppi.c:174: warning: passing argument 1 of 'device_printf' from incompatible pointer type
/usr/src/sys/dev/ppbus/ppi.c:174: error: too few arguments to function 'device_printf'
/usr/src/sys/dev/ppbus/ppi.c: In function 'ppiioctl':
/usr/src/sys/dev/ppbus/ppi.c:505: error: 'ppbus' undeclared (first use in this function)
/usr/src/sys/dev/ppbus/ppi.c:505: error: (Each undeclared identifier is reported only once
/usr/src/sys/dev/ppbus/ppi.c:505: error: for each function it appears in.)
/usr/src/sys/dev/ppbus/ppi.c:498: warning: unused variable 'ppidev'
*** Error code 1
-- 
NAKAJI Hiroyuki