Re: setting sensor limits fails

2010-03-02 Thread Klistvud

Dne, 01. 03. 2010 23:55:43 je s. keeling napisal(a):


  I don't think this should be a threat to your laptop, the sensors
  only read temperature (and other data) they don't interfere with
  the working of the CPU, hard drive or other components. I think you
  have no reasons to worry.

They sure help here, otherwise the fan makes it sound like my Sun U30.



If failing to set sensor limits is what I think it is, then it's no  
joke. You should check whether this means that your thermal trip points  
are messed up (or absent altogether); if they are, your laptop may  
eventually overheat and die. (However, your fan being so loud is  
actually a good sign.) The *passive* trip point is particularly crucial  
in this context. I jotted down some indications about trip points and  
such on the website you'll find in my signature (once there, look for  
the heading Laptops In Heat).


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Re: setting sensor limits fails

2010-03-02 Thread Klistvud

Dne, 02. 03. 2010 10:29:32 je Klistvud napisal(a):
(However, your fan being so loud is actually a good sign.) The  
*passive* trip point is particularly crucial in this context.


Whoops, I managed to make two major mistakes in two short sentences:
1. The OT makes no mention of loud fans.
2. The *critical* trip point is even more crucial.
I've just had my coffe, but apparently it hasn't sunk in yet ...

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Re: setting sensor limits fails

2010-03-01 Thread s. keeling
António PT acmps...@gmail.com:
  2010/2/1 Nima Azarbayjany i.adore.deb...@gmail.com
 
  On a recent install of Squeeze I get a message that setting sensor limits
  fails.  I am wondering whether this can be a threat to the hardware and if
  there are any workarounds for this issue.  I am running the amd64 2.6.32
  kernel from testing on my HP Pavilion dv5 laptop.

Mine's a dv4.  2.6.30-bpo.1-amd64

  I also have the same hardware as you and the same kernel in amd64. Is this
  relative to lm_sensors? I never got them to work...

(0) infidel /home/keeling_ sensors
acpitz-virtual-0
Adapter: Virtual device
temp1:   +66.0�C  (crit = +105.0�C)

(0) infidel /home/keeling_ lsmod | grep power
cpufreq_powersave   1792  0
powernow_k814036  0
processor  40048  1 powernow_k8

  I don't think this should be a threat to your laptop, the sensors
  only read temperature (and other data) they don't interfere with
  the working of the CPU, hard drive or other components. I think you
  have no reasons to worry.

They sure help here, otherwise the fan makes it sound like my Sun U30.


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Re: setting sensor limits fails

2010-02-02 Thread Tixy
On Mon, 2010-02-01 at 17:22 -0500, Stephen Powell wrote:

 I don't pretend to know anything about this, but isn't there
 internal circuitry present in the machine that will automatically
 shut the machine down if it gets too hot?  I'm thinking of older
 operating systems, such as DOS for example, that generally didn't
 have any kind of sensor management software built in.  Being
 able to manage that kind of thing in an operating system is a nice
 feature, but I'm not sure if it's essential for safe operation.
 It seems to me that if the machine were designed properly it
 would have some default operating characteristics that it will fall
 back on if it is not being managed by an operating system.

You would think so wouldn't you? However, I believe it's all done in
software via System Management Mode.

I once worked on an OS which we ran on PC hardware for development
purposes, and the CPU would regularly 'disappear' off somewhere for a
millisecond or more, making it impossible for a modern PC to even keep a
bog standard 115kbit/sec serial port UART from underflowing. :-(

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Re: setting sensor limits fails

2010-02-02 Thread Klistvud

Dne, 02. 02. 2010 11:00:12 je Tixy napisal(a):


You would think so wouldn't you? However, I believe it's all done in
software via System Management Mode.



Yep. In GNU/Linux, this pretty much boils down to the thermal kernel  
module. I believe if you have a borked thermal module, or you don't  
load one, or you do but you set the wrong trip points, you can easily  
brick a modern laptop.


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Re: setting sensor limits fails

2010-02-02 Thread Celejar
On Tue, 02 Feb 2010 12:27:39 +0100
Klistvud quotati...@aliceadsl.fr wrote:

 Dne, 02. 02. 2010 11:00:12 je Tixy napisal(a):
  
  You would think so wouldn't you? However, I believe it's all done in
  software via System Management Mode.
  
 
 Yep. In GNU/Linux, this pretty much boils down to the thermal kernel  
 module. I believe if you have a borked thermal module, or you don't  
 load one, or you do but you set the wrong trip points, you can easily  
 brick a modern laptop.

I admit to rank ignorance here, but are you serious?  Shouldn't that
mean that it should be easy for a kernel crash, or a buggy kernel, to
brick my system?  Has such an occurrence ever been documented?

Celejar
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Re: setting sensor limits fails

2010-02-02 Thread Klistvud

Dne, 02. 02. 2010 15:03:01 je Celejar napisal(a):

 Has such an occurrence ever been documented?


If you send me your laptop, I'll be glad to document it for you ;)

Seriously, I've messed around with trip points a bit, but never went as  
far as to let my laptop actually take fire (for obvious reasons). There  
*might* be an upper hardware critical limit that you aren't allowed to  
override in software, I don't know. It probably depends on your  
particular hardware and the vendors particular ACPI implementation.  
What I do know is you *are* allowed to play around with the thermal  
module trip points, at least to a certain extent. With all the  
consequences this entails ...


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Re: setting sensor limits fails

2010-02-02 Thread Nima Azarbayjany
This issue has been addressed in bug #566184.  I did not understand the 
cause of the problem but it seems to have been fixed and packages are 
waiting to enter Squeeze.


Nima


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Re: setting sensor limits fails

2010-02-02 Thread Stephen Powell
On Tue, 2 Feb 2010 06:27:39 -0500 (EST), Klistvud wrote:
 Yep. In GNU/Linux, this pretty much boils down to the thermal kernel  
 module. I believe if you have a borked thermal module, or you don't  
 load one, or you do but you set the wrong trip points, you can easily  
 brick a modern laptop.

I'm not sure if an IBM ThinkPad 600 qualifies as a modern laptop,
since it was originally introduced in 1998; but I run Lenny on one
of those.  In fact, I created a web page devoted to running Lenny on it:
http://www.wowway.com/~zlinuxman/tp600.htm.
If I recall correctly, the lmsensors module recognizes the particular
sensor hardware on this laptop as unsupported and refuses to load!
Yet I have had no thermal issues with it.
Of course, I haven't deliberately stressed it either, such as
wrapping it in a blanket.  But I have used it extensively,
with no problems.
 


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Re: setting sensor limits fails

2010-02-02 Thread s. keeling
Nima Azarbayjany i.adore.deb...@gmail.com:
 
  On a recent install of Squeeze I get a message that setting sensor limits
  fails.  I am wondering whether this can be a threat to the hardware and if

Is lm-sensors installed?  cpufreqd?  powernow_k8 kernel module?

  there are any workarounds for this issue.  I am running the amd64 2.6.32
  kernel from testing on my HP Pavilion dv5 laptop.

I'm Lenny here with:

  Linux infidel 2.6.30-bpo.1-amd64 #1 SMP Wed Aug 5 23:18:59 UTC 2009 x86_64 
GNU/Linux

Stock, not compiled from source.  This is an HP dv4, AMD 64.

   
00:00.0 Host bridge: Advanced Micro Devices [AMD] RS780 Host Bridge
00:01.0 PCI bridge: Hewlett-Packard Company Device 9602
00:04.0 PCI bridge: Advanced Micro Devices [AMD] RS780 PCI to PCI bridge (PCIE 
port 0)
00:05.0 PCI bridge: Advanced Micro Devices [AMD] RS780 PCI to PCI bridge (PCIE 
port 1)
00:06.0 PCI bridge: Advanced Micro Devices [AMD] RS780 PCI to PCI bridge (PCIE 
port 2)
00:07.0 PCI bridge: Advanced Micro Devices [AMD] RS780 PCI to PCI bridge (PCIE 
port 3)
00:11.0 SATA controller: ATI Technologies Inc SB700/SB800 SATA Controller [AHCI 
mode]
00:12.0 USB Controller: ATI Technologies Inc SB700/SB800 USB OHCI0 Controller
00:12.1 USB Controller: ATI Technologies Inc SB700 USB OHCI1 Controller
00:12.2 USB Controller: ATI Technologies Inc SB700/SB800 USB EHCI Controller
00:13.0 USB Controller: ATI Technologies Inc SB700/SB800 USB OHCI0 Controller
00:13.1 USB Controller: ATI Technologies Inc SB700 USB OHCI1 Controller
00:13.2 USB Controller: ATI Technologies Inc SB700/SB800 USB EHCI Controller
00:14.0 SMBus: ATI Technologies Inc SBx00 SMBus Controller (rev 3a)
00:14.1 IDE interface: ATI Technologies Inc SB700/SB800 IDE Controller
00:14.2 Audio device: ATI Technologies Inc SBx00 Azalia (Intel HDA)
00:14.3 ISA bridge: ATI Technologies Inc SB700/SB800 LPC host controller
00:14.4 PCI bridge: ATI Technologies Inc SBx00 PCI to PCI Bridge
00:18.0 Host bridge: Advanced Micro Devices [AMD] Mobile K10 [Turion X2, Athlon 
X2, Sempron] HyperTransport Configuration (rev 40)
00:18.1 Host bridge: Advanced Micro Devices [AMD] Family 11h [Turion X2, Athlon 
X2, Sempron] Address Map
00:18.2 Host bridge: Advanced Micro Devices [AMD] Mobile K10 [Turion X2, Athlon 
X2, Sempron] DRAM Controller
00:18.3 Host bridge: Advanced Micro Devices [AMD] Mobile K10 [Turion X2, Athlon 
X2, Sempron] Miscellaneous Control
00:18.4 Host bridge: Advanced Micro Devices [AMD] Mobile K10 [Turion X2, Athlon 
X2, Sempron] Link Control
01:05.0 VGA compatible controller: ATI Technologies Inc RS780M/RS780MN [Radeon 
HD 3200 Graphics]
01:05.1 Audio device: ATI Technologies Inc RS780 Azalia controller
08:00.0 System peripheral: JMicron Technology Corp. SD/MMC Host Controller
08:00.2 SD Host controller: JMicron Technology Corp. Standard SD Host Controller
08:00.3 System peripheral: JMicron Technology Corp. MS Host Controller
08:00.4 System peripheral: JMicron Technology Corp. xD Host Controller
09:00.0 Network controller: Broadcom Corporation BCM4312 802.11b/g (rev 01)
0a:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E 
PCI Express Fast Ethernet controller (rev 02)
   


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setting sensor limits fails

2010-02-01 Thread Nima Azarbayjany
Hi there,

On a recent install of Squeeze I get a message that setting sensor limits
fails.  I am wondering whether this can be a threat to the hardware and if
there are any workarounds for this issue.  I am running the amd64 2.6.32
kernel from testing on my HP Pavilion dv5 laptop.

Thanks.

Nima


Re: setting sensor limits fails

2010-02-01 Thread António PT
I also have the same hardware as you and the same kernel in amd64. Is this
relative to lm_sensors? I never got them to work...

I don't think this should be a threat to your laptop, the sensors only read
temperature (and other data) they don't interfere with the working of the
CPU, hard drive or other components. I think you have no reasons to worry.

2010/2/1 Nima Azarbayjany i.adore.deb...@gmail.com

 Hi there,

 On a recent install of Squeeze I get a message that setting sensor limits
 fails.  I am wondering whether this can be a threat to the hardware and if
 there are any workarounds for this issue.  I am running the amd64 2.6.32
 kernel from testing on my HP Pavilion dv5 laptop.

 Thanks.

 Nima




Re: setting sensor limits fails

2010-02-01 Thread Klistvud

Dne, 01. 02. 2010 18:56:03 je António PT napisal(a):


I don't think this should be a threat to your laptop, the sensors  
only read
temperature (and other data) they don't interfere with the working of  
the
CPU, hard drive or other components. I think you have no reasons to  
worry.




Well, IIUC, the sensors also trigger the overheating circuits in your  
laptop, so there is more than just a theoretical possibility to fry  
your laptop if your sensors are disabled. Just try leaving your laptop  
running on a thick carpet, and accidentally throw a warm jacket/coat  
over it ...


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Re: setting sensor limits fails

2010-02-01 Thread Stephen Powell
On Mon, 1 Feb 2010 17:40:52 -0500 (EST), Klistvud wrote:
 Well, IIUC, the sensors also trigger the overheating circuits in your  
 laptop, so there is more than just a theoretical possibility to fry  
 your laptop if your sensors are disabled. Just try leaving your laptop  
 running on a thick carpet, and accidentally throw a warm jacket/coat  
 over it ...

I don't pretend to know anything about this, but isn't there
internal circuitry present in the machine that will automatically
shut the machine down if it gets too hot?  I'm thinking of older
operating systems, such as DOS for example, that generally didn't
have any kind of sensor management software built in.  Being
able to manage that kind of thing in an operating system is a nice
feature, but I'm not sure if it's essential for safe operation.
It seems to me that if the machine were designed properly it
would have some default operating characteristics that it will fall
back on if it is not being managed by an operating system.

For example, If the temperature is below threshold 1, turn the
fan off.  If it is above threshold 1, turn the fan on low.
If it is above threshold 2, turn the fan on medium.  If it is
above threshold 3, turn the fan on high.  If it is above
threshold 4, shut the machine off.  At least that is how one would
hope it would work.


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