Re: [SLUG] More and More Hardware Recommendations

From: Mike Branda (realraccoon@tampabay.rr.com)
Date: Wed Dec 21 2005 - 22:21:00 EST


On Wed, 2005-12-21 at 17:00 -0500, Mike Branda wrote:
> On Wed, 2005-12-21 at 16:02 -0500, Eben King wrote:
> > On Wed, 21 Dec 2005, xcalibre wrote:
> >
> > > ASUS, and Gigabyte are very good boards. I am more of a Gigabyte fan, Next
> > > I would go AMD save the money from going INTEL, use the money to go
> > > towards Memory or larger hard drive.
> >
> > I have an Asus A7V333 and an Asus A7V266. They've acted fine. I have only
> > two complaints: (1) I have not found any way on the A7V333 (Maybe on the
> > A7V266 too? Don't remember.) to read the temperatures/fan speeds/voltages
> > from within Linux. I have to reboot and ask the BIOS, and hope it doesn't
> > change too much before I get there.
>
> Asus A7V333
>
> North Bridge: VIA KT333(CF)
> South Bridge: VIA VT8235
>
> http://www2.lm-sensors.nu/~lm78/cvs/lm_sensors2/doc/busses/i2c-viapro
>
> lm_sensors reads that chipset. Actually, to tell you the truth I think
> I have this Mobo at home! I'll see if I can get it to work. I have had
> luck with it here at the office on several Intel's. On my Dell laptop
> which lm_sensors doesn't support, I've found a way to read a file
> in /proc/acpi/thermal_zone/ that I don't recall off the top of my head.
> More on this later after I get home......
>
>
>
> Mike Branda Jr.

O.K, It's not the same board but it is an asus and I was able to get
lm_sensors (now just sensors?) to work. The kernel had all the
appropriate i2c stuff as modules or in it by default.

# rpm -qa | grep sensors
sensors-2.9.0-3
 as root:
# sensors-detect

snip

This program will help you determine which I2C/SMBus modules you need to
load to use lm_sensors most effectively. You need to have i2c and
lm_sensors installed before running this program.
Also, you need to be `root', or at least have access to the /dev/i2c-*
files, for most things.
If you have patched your kernel and have some drivers built in, you can
safely answer NO if asked to load some modules. In this case, things may
seem a bit confusing, but they will still work.

It is generally safe and recommended to accept the default answers to
all
questions, unless you know what you're doing.

/snip

Indeed pressing enter a half dozen times or so did the job. at the end
it gives you instructions as to how to set it up so it works on boot:

snip

I will now generate the commands needed to load the I2C modules.
Sometimes, a chip is available both through the ISA bus and an I2C bus.
ISA bus access is faster, but you need to load an additional driver
module
for it. If you have the choice, do you want to use the ISA bus or the
I2C/SMBus (ISA/smbus)?

To make the sensors modules behave correctly, add these lines to
/etc/modprobe.conf:

#----cut here----
# I2C module options
alias char-major-89 i2c-dev
#----cut here----

To load everything that is needed, add this to some /etc/rc* file:

#----cut here----
# I2C adapter drivers
modprobe i2c-sis96x
modprobe i2c-isa
# I2C chip drivers
# no driver for Winbond W83L785R yet
modprobe it87
# sleep 2 # optional
/usr/bin/sensors -s # recommended
#----cut here----

/snip

after running the last parts above by hand to test I got:

# sensors
it87-isa-0290
Adapter: ISA adapter
VCore 1: +1.76 V (min = +1.42 V, max = +1.57 V) ALARM
VCore 2: +2.48 V (min = +2.40 V, max = +2.61 V)
+3.3V: +3.26 V (min = +3.14 V, max = +3.46 V)
+5V: +4.97 V (min = +4.76 V, max = +5.24 V)
+12V: +11.78 V (min = +11.39 V, max = +12.61 V)
-12V: -14.84 V (min = -12.63 V, max = -11.41 V) ALARM
-5V: -9.41 V (min = -5.26 V, max = -4.77 V) ALARM
Stdby: +4.95 V (min = +4.76 V, max = +5.24 V)
VBat: +0.00 V
fan1: 0 RPM (min = 0 RPM, div = 4)
fan2: 4440 RPM (min = 2657 RPM, div = 2)
fan3: 0 RPM (min = 2657 RPM, div = 2) ALARM
M/B Temp: +32°C (low = +15°C, high = +40°C) sensor =
thermistor
CPU Temp: +48°C (low = +15°C, high = +45°C) sensor =
thermistor
Temp3: +118°C (low = +15°C, high = +45°C) sensor = diode

By the way, on the Dell laptop with acpi it's:

# cat /proc/acpi/thermal_zone/THM/temperature
temperature: 39 C

HTH!

Mike Branda Jr.

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