kern/60094: NVIDIA drivers + SMP causes hard lock up

[Jason Bacon]

>Number:         60094
>Category:       kern
>Synopsis:       NVIDIA drivers + SMP causes hard lock up
>Confidential:   no
>Severity:       critical
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue Dec 09 14:40:14 PST 2003
>Closed-Date:
>Last-Modified:
>Originator:     Jason Bacon
>Release:        FreeBSD 5.1-RELEASE i386
>Organization:
Medical College of Wisconsin
>Environment:
System: FreeBSD smithers.neuro.mcw.edu 5.1-RELEASE FreeBSD 5.1-RELEASE #0: Thu Jun 5 02:55:42 GMT 2003 root at wv1u.btc.adaptec.com:/usr/obj/usr/src/sys/GENERIC i386

Latest 5.1-RELEASE, installed from ftp6.freebsd.org on 12-9-2003.
(ENV above is from a different machine with an older install)

Motherboard is ASUS P2B-D, BIOS 1013.

>Description:
	After installing latest NVIDIA drivers with SMP enabled, the
	system locks up completely after starting XFree86.  ( Fairly
	late in the KDE loading process )

	Serious damage
	to the filesystem resulted in every one of five attempts.
	Completely removing all X and KDE packages didn't restore 
	functionality, so to control variables, I reformatted and reinstalled 
	following each lockup.

	Following NVIDIA README suggestions, I also tried using
	the FreeBSD AGP-GART:

	/boot/loader.conf:	agp_load="YES"
	XF86Config:		Option "NvAGP" "2"
	nv-freebsd.h:		#define USE_OS_AGP_GART

	This time, the system locked during the NVIDIA splash screen.

>How-To-Repeat:
	Install SMP and NVIDIA GEFORCE drivers, in either order.

>Fix:
	Workarounds:

	1. Don't enable SMP with NVIDIA GEFORCE drivers.

	2. Disable AGP-GART: In XF86Config: Option "NvAGP" "0".  This
	   must be done before starting X for the first time with SMP enabled
	   or the system may damaged beyond reasonable repair.  ( This will
	   also presumably impair performance, although I don't know how much )
>Release-Note:
>Audit-Trail:
>Unformatted: