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Date: Sat, 28 May 2011 20:49:49 GMT
From: David Graham <dgraham@unthinkable.org>
To: freebsd-gnats-submit@FreeBSD.org
Subject: Enabling powerd with default settings on Intel Xeon-E3 results in system freeze
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>Number:         157386
>Category:       amd64
>Synopsis:       [powerd] Enabling powerd(8) with default settings on Intel Xeon-E3 results in system freeze
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-amd64
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:  
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sat May 28 20:50:07 UTC 2011
>Closed-Date:    
>Last-Modified:  Fri Jun 15 13:20:02 UTC 2012
>Originator:     David Graham
>Release:        8.2-RELEASE
>Organization:
>Environment:
FreeBSD  8.2-RELEASE FreeBSD 8.2-RELEASE #0: Thu Feb 17 02:41:51 UTC 2011     root@mason.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC  amd64
>Description:
After enabling powerd, my system began having system freezes (requiring a hard reboot) on a daily basis.

The system is using some fairly recent hardware
- Intel E-1245 Xeon processor
- Intel C206 chipset
>How-To-Repeat:
Enable powerd with default settings.
>Fix:
add "-m 500" to the powerd flags in rc.conf.  The number was chosen arbitrarily.

>Release-Note:
>Audit-Trail:

From: Andriy Gapon <avg@icyb.net.ua>
To: bug-followup@FreeBSD.org, dgraham@unthinkable.org
Cc:  
Subject: Re: amd64/157386: [powerd] Enabling powerd(8) with default settings
 on Intel Xeon-E3 results in system freeze
Date: Sun, 29 May 2011 09:59:53 +0300

 Can you provide output of the dev.cpu sysctl and a snippet of devinfo command
 output that shows devices under cpu0?
 
 -- 
 Andriy Gapon

From: Andriy Gapon <avg@icyb.net.ua>
To: David Graham <dgraham@unthinkable.org>, bug-followup@FreeBSD.org
Cc:  
Subject: Re: amd64/157386: [powerd] Enabling powerd(8) with default settings
 on Intel Xeon-E3 results in system freeze
Date: Tue, 31 May 2011 09:08:48 +0300

 on 29/05/2011 17:19 David Graham said the following:
 > On 05/29/11 01:59, Andriy Gapon wrote:
 >>
 >> Can you provide output of the dev.cpu sysctl and a snippet of devinfo command
 >> output that shows devices under cpu0?
 >>
 > Hi Andriy,
 > 
 > ev.cpu.0.%desc: ACPI CPU
 > dev.cpu.0.%driver: cpu
 > dev.cpu.0.%location: handle=\_SB_.CP00
 > dev.cpu.0.%pnpinfo: _HID=none _UID=0
 > dev.cpu.0.%parent: acpi0
 > dev.cpu.0.freq: 2654
 > dev.cpu.0.freq_levels: 2654/-1 2322/-1 1990/-1 1658/-1 1327/-1 995/-1 663/-1 331/-1
 > dev.cpu.0.cx_supported: C1/0
 > dev.cpu.0.cx_lowest: C1
 > dev.cpu.0.cx_usage: 100.00% last 2224us
 > 
 [snip]
 >     cpu0
 >       acpi_throttle0
 >       cpufreq0
 >     acpi_timer0
 
 I'd say that the problem is because of acpi_throttle driver, which is kind of
 dangerous and useless driver because of how it regulates frequency.
 
 I usually disable it on my Intel machines via:
 hint.acpi_throttle.0.disabled=1
 
 I am a bit surprised that acpi_perf and (dependent on it) est drivers haven't
 attached.
 
 -- 
 Andriy Gapon

From: "420laurasmith420@gmail.com" <420laurasmith420@gmail.com>
To: "bug-followup@FreeBSD.org" <bug-followup@freebsd.org>, "dgraham@unthinkable.org"
  <dgraham@unthinkable.org>
Cc:  
Subject: Re: amd64/157386: [powerd] Enabling powerd(8) with default
 settings on Intel Xeon-E3 results in system freeze
Date: Fri, 15 Jun 2012 09:15:20 -0400

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>Unformatted:
