i386/104678: SMP not working on Turion XP Laptop

[Dan Olson]

The following reply was made to PR i386/104678; it has been noted by GNATS.

From: Dan Olson <danolson at visi.com>
To: Giorgos Keramidas <keramida at freebsd.org>
Cc: bug-followup at freebsd.org
Subject: Re: i386/104678: SMP not working on Turion XP Laptop
Date: Wed, 08 Nov 2006 17:22:44 -0600

 Giorgos Keramidas wrote:
 > On 2006-10-22 16:52, Dan Olson <danolson at visi.com> wrote:
 >> FreeBSD tron.danolson.dsl.visi.com 6.2-PRERELEASE FreeBSD
 >> 6.2-PRERELEASE #0: Sun Oct 22 10:00:30 CDT 2006
 >> olson at tron.danolson.dsl.visi.com:/usr/obj/usr/src/sys/TRON i386
 > 
 >> SMP doesn't work on a new Turion X2 laptop. The laptop is an HP dv6119us.
 > 
 >> Laptop appears to act normally by entering set hint.apic.0.disabled=1
 >> at the loader prompt.
 > 
 >> When that is not set, the Laptop appears to lock up but accepts
 >> keyboard input. It won't display for about 10 seconds unless more keys
 >> are press. If no keys are pressed it doesn't display the input.
 > 
 > Hi Dan,
 > 
 > I've had similar problems with an Acer Ferrari 3400-LMI, which were
 > resolved by setting in `/etc/rc.conf':
 > 
 >     performance_cx_lowest="HIGH"    # Online CPU idle state
 >     economy_cx_lowest="HIGH"        # Offline CPU idle state
 > 
 > Can you show us the values of these settings in `/etc/defaults/rc.conf'
 > and in `/etc/rc.conf' on your laptop?
 > 
 
 Hi Giorgos,
 
 Starting out, these variables were not set in /etc/rc.conf. In 
 /etc/defaults/rc.conf they were set as suggested:
 
 	performance_cx_lowest="HIGH"
 	economy_cx_lowest="HIGH"
 
 After setting them as shown in my /etc/rc.conf, no change was noticed.
 
 I also don't think the powernow feature is detected and used, at least 
 with apic disabled.
 
 Thanks for the suggestion though.
 
 Dan