[lm-sensors] Gigabyte GA-945GCMX

[lm-sensors] Gigabyte GA-945GCMX

[Tom]

I have a GA-945GCMX-S2 board that apparently uses the it8718F chip. It's 
running as a web server so I can't dual boot it to any WinX version for 
validation. The default profile is only vaguely correct. I'm running a 
P4-HT-550 in this board so it has only one temp reading. Since these 
CPU's run hot I need to monitor it to prevent internal clock reduction. 
I already had to purchase a "REAL" heat sink and fan and destroyed an 
AOPEN I945GM-PILF that came with a stupidly small and anemic 60mm fan 
and aluminum only heat sink trying to remove the old fan mount. It would 
run as hot as 90c (using realtemp under Vista). These 90nm CPU's always 
run hot but 90c is on fire...

I think this is it:
SL7KM 3.40 GHz 04B 800 MHz  LGA775 90 nm D0 0F34h 115W 72.8°C 1.4V

It could be this CPU though:
SL7J8 3.40 GHz 04B 800 MHz  LGA775 90 nm D0 0F34h 115W 72.8°C 1.4V


It appears, from a basic observation that only the fan1 and temp3 are 
usable without changes but they need to be interpreted.
CPU voltage should be 1.4
DRAM V is 1.8 (possibly in1)
The remainder are somewhat of a mystery.

in0 jumps as high as 2.2 under heavy load making it a curiosity.
Could this be CPU Voltage?

Fan1 seems correct. It varies between 450 on a slow cold morning and 
2200 or so under heavy load. It increases instantly under load so it's 
working correctly.
Fan2 and Fan3 are not connected. I suspect only Fan2 is speed sensing.
Temp1 is ???useless???
Temp2 is meaningless
Temp3 seems a bit low for CPU Case or Die temp but tracks cpu usage as 
well as the interrupt driven idle loop.

I have no baseline to compare for this CPU and board combination. This 
board was my desktop board until it failed in service. It ran an Intel 
E2140 OC to 2.2GHz for over a year just fine and temperatures were shown 
correctly using realtemp under Vista. It was just RMA'd to gigabyte for 
repair and they did indeed repair it. They replaced all power components 
around the CPU and it's now ready to rock again as my new home web server.


Do any of you have any experience or feedback from Gigabyte on this 
particular board or shall I go ahead and ask them for specifics?

isadump 0x295 0x296
WARNING! Running this program can cause system crashes, data loss and worse!
I will probe address register 0x295 and data register 0x296.
Continue? [Y/n]
     0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
00: 11 12 a9 00 ff ff 00 37 ff 87 40 09 07 0b ff ff
10: ff a9 ff 73 d7 82 7f 7f 03 ff ff ff 00 ff ff ff
20: 49 72 cf ff bb 00 52 ff ff ca fe 16 fa f3 f3 f3
30: 4f 3b 76 6b d9 c4 c3 b1 c3 b1 c5 b2 ff 00 c5 b2
40: 2d 00 37 00 7f 7f 00 0d 2d ff ff ff ff ff ff ff
50: ff 1c 7f 7f 7f 50 de de 90 de 13 12 00 00 00 00
60: 00 14 41 23 90 03 ff ff 7f 7f 7f 00 00 7f ff ff
70: 00 14 41 23 90 03 ff ff ff ff ff ff ff ff ff ff
80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 02 00
90: ff 00 00 00 ff 00 00 00 ff ff ff ff ff ff ff ff
a0: 00 00 00 00 00 00 00 ff ff ff ff ff ff ff ff ff
b0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
c0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
d0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
e0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
f0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[root@moya]


Lightly loaded, near idle, ambient 75F

it8718-isa-0290
Adapter: ISA adapter
in0: +1.17 V (min = +0.94 V, max = +1.26 V) ALARM
in1: +1.82 V (min = +1.71 V, max = +1.89 V)
in2: +3.33 V (min = +3.14 V, max = +3.47 V)
in3: +4.08 V (min = +2.83 V, max = +3.12 V) ALARM
in4: +2.99 V (min = +2.83 V, max = +3.12 V)
in5: +0.00 V (min = +2.85 V, max = +3.15 V) ALARM
in6: +1.33 V (min = +0.00 V, max = +4.08 V)
in7: +4.08 V (min = +2.85 V, max = +3.15 V) ALARM
Vbat: +4.08 V
fan1: 985 RPM (min = 0 RPM)
fan2: 0 RPM (min = 3994 RPM) ALARM
fan3: 0 RPM (min = 0 RPM)
temp1: -54.0°C (low = +0.0°C, high = +45.0°C) sensor = transistor
temp2: -2.0°C (low = +0.0°C, high = +55.0°C) sensor = transistor
temp3: +23.0°C (low = +127.0°C, high = +127.0°C) sensor = thermal diode
cpu0_vid: +1.075 V


Under heavy load (gzip backup) it stabilizes about here. Ambient is 
around 75F
it8718-isa-0290
Adapter: ISA adapter
in0: +1.26 V (min = +0.94 V, max = +1.26 V) ALARM
in1: +1.82 V (min = +1.71 V, max = +1.89 V)
in2: +3.31 V (min = +3.14 V, max = +3.47 V)
in3: +4.08 V (min = +2.83 V, max = +3.12 V) ALARM
in4: +2.96 V (min = +2.83 V, max = +3.12 V)
in5: +0.00 V (min = +2.85 V, max = +3.15 V) ALARM
in6: +1.33 V (min = +0.00 V, max = +4.08 V)
in7: +4.08 V (min = +2.85 V, max = +3.15 V) ALARM
Vbat: +4.08 V
fan1: 2039 RPM (min = 0 RPM)
fan2: 0 RPM (min = 3994 RPM) ALARM
fan3: 0 RPM (min = 0 RPM)
temp1: -54.0°C (low = +0.0°C, high = +45.0°C) sensor = transistor
temp2: -2.0°C (low = +0.0°C, high = +55.0°C) sensor = transistor
temp3: +45.0°C (low = +127.0°C, high = +127.0°C) sensor = thermal diode
cpu0_vid: +1.075 V

I can install cpufreqd to monitor cpu clock which will help but since 
there is no working profile for this board I might as well help make one.

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Re: [lm-sensors] Gigabyte GA-945GCMX

[David Hubbard]

Hi Tom,

On Fri, May 22, 2009 at 10:34 PM, Tom <siggma@trbailey.net> wrote:
> I have a GA-945GCMX-S2 board that apparently uses the it8718F chip.
>

Some other manufacturers have been willing to share schematics or
information about their boards. I'm looking for the voltage divider
information on the Asus M4A78T-E (it8720f chip), so I'll let you know
how that goes. It can't hurt to ask the manufacturer. I could be
wrong, but this is the first request for a Gigabyte schematic. Give
the company some time to think it over; they might want you to sign an
NDA -- Greg Kroah-Hartman has more information on the legal setup for
this: http://www.kroah.com/log/linux/free_drivers.html

I'm sure some other lm-sensors developers will chime in too, and they
may have better contact with Gigabyte. Good luck.

David

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Re: [lm-sensors] Gigabyte GA-945GCMX

[Tom]

David Hubbard wrote:
> Hi Tom,
>
> On Fri, May 22, 2009 at 10:34 PM, Tom <siggma@trbailey.net> wrote:
>   
>> I have a GA-945GCMX-S2 board that apparently uses the it8718F chip.
>>
>>     
>  I could be
> wrong, but this is the first request for a Gigabyte schematic. Give
> the company some time to think it over; they might want you to sign an
> NDA -- Greg Kroah-Hartman has more information on the legal setup for
> this: http://www.kroah.com/log/linux/free_drivers.html
>   
Thanks for the encouragement. Back when I was less gray I used to fiddle 
with C:\debug and poke around in 80286 BIOS code. I made a cool little 
Bio Feedback gadget by copying and rewriting the game port adapter code, 
then hooking my nifty little unregistered, non-integrating RVT 
(Resistance Voltage Time domain) AD converter to a couple of nickels 
soldered to wires. QBASIC provided a running graph and I was off to the 
races. It would even pick up my heartbeat as it slowly shocked me with 
12v. So, could one do the same in this situation,  or is a multi meg 
bios too daunting a prospect for poking around these days. It's been a 
long, long time for me (1992).

Since there are possible legal issues with contacting the MFG I'll wait 
a spell and see what else comes up.
-Tom

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