i2c-amd756 and dual opteron sensors not found

[Charles Galpin]

Hi

I have built i2c and lm_sensors-2.8.4 on a dual opteron running fedora 
core 1 x86_64.  Following http://www2.lm-sensors.nu/~lm78/identify.html 
I get to step 12, but it only recognizes the eeprom, and nothing else.

I had the same build issues as this thread, which appears to have the 
same problem too (but on 2.8.1 a few months ago) - 
http://archives.andrew.net.au/lm-sensors/msg04812.html.  I can't see 
where/how to join this list to ask on this thread.

Can you offer any help on how to get this working properly? I can give 
root access to the box if needed.

thanks for any help
charles

Nothing useful in /var/log/messages:
Feb 22 15:56:43 opteron kernel: i2c-core.o: i2c core module version 
2.8.4 (20040207)
Feb 22 15:56:43 opteron kernel: i2c-proc.o version 2.8.4 (20040207)
Feb 22 15:56:43 opteron kernel: i2c-amd756.o version 2.8.4 (20040207)

[root at opteron lm_sensors-2.8.4]# sensors-detect

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.

  We can start with probing for (PCI) I2C or SMBus adapters.
  You do not need any special privileges for this.
  Do you want to probe now? (YES/no):
Probing for PCI bus adapters...
Use driver `i2c-amd756' for device 00:07.3: AMD-8111 ACPI
Probe succesfully concluded.

  We will now try to load each adapter module in turn.
Module `i2c-amd756' already loaded.
  Do you now want to be prompted for non-detectable adapters? (yes/NO):
  To continue, we need module `i2c-dev' to be loaded.
  If it is built-in into your kernel, you can safely skip this.
  i2c-dev is not loaded. Do you want to load it now? (YES/no):
  Module loaded succesfully.

  We are now going to do the adapter probings. Some adapters may hang 
halfway
  through; we can't really help that. Also, some chips will be double 
detected;
  we choose the one with the highest confidence value in that case.
  If you found that the adapter hung after probing a certain address, 
you can
  specify that address to remain unprobed. That often
  includes address 0x69 (clock chip).

Next adapter: SMBus AMD756 adapter at 80e0 (Non-I2C SMBus adapter)
Do you want to scan it? (YES/no/selectively):
Client found at address 0x08
Client found at address 0x52
Probing for `SPD EEPROM'... Success!
     (confidence 8, driver `eeprom')
Client found at address 0x53
Probing for `SPD EEPROM'... Success!
     (confidence 8, driver `eeprom')
Client found at address 0x69

[root at opteron lm_sensors-2.8.4]# lsmod
Module                  Size  Used by    Not tainted
i2c-dev                 5696   0
i2c-amd756              5138   0
i2c-proc                9800   0
i2c-core               25124   0  [i2c-dev i2c-amd756 i2c-proc]
lp                     10184   0  (autoclean)
parport                44064   0  (autoclean) [lp]
autofs                 14468   0  (autoclean) (unused)
tg3                    59600   1
sg                     38200   0  (autoclean)
keybdev                 3168   0  (unused)
mousedev                6984   0  (unused)
hid                    23976   0  (unused)
input                   7584   0  [keybdev mousedev hid]
usb-ohci               24752   0  (unused)
usbcore                89888   1  [hid usb-ohci]
processor              12652   0
button                  4432   0  (unused)
asus_acpi              11248   0  (unused)
ac                      3288   0  (unused)
mptscsih               47216   3
mptbase                46624   3  [mptscsih]
sd_mod                 14540   6
scsi_mod              129824   3  [sg mptscsih sd_mod]

[root at opteron lm_sensors-2.8.4]# service lm_sensors status
No sensors found!

[root at opteron lm_sensors-2.8.4]# lspci -n
00:06.0 Class 0604: 1022:7460 (rev 07)
00:07.0 Class 0601: 1022:7468 (rev 05)
00:07.1 Class 0101: 1022:7469 (rev 03)
00:07.3 Class 0680: 1022:746b (rev 05)
00:0a.0 Class 0604: 1022:7450 (rev 12)
00:0a.1 Class 0800: 1022:7451 (rev 01)
00:0b.0 Class 0604: 1022:7450 (rev 12)
00:0b.1 Class 0800: 1022:7451 (rev 01)
00:18.0 Class 0600: 1022:1100
00:18.1 Class 0600: 1022:1101
00:18.2 Class 0600: 1022:1102
00:18.3 Class 0600: 1022:1103
00:19.0 Class 0600: 1022:1100
00:19.1 Class 0600: 1022:1101
00:19.2 Class 0600: 1022:1102
00:19.3 Class 0600: 1022:1103
01:00.0 Class 0c03: 1022:7464 (rev 0b)
01:00.1 Class 0c03: 1022:7464 (rev 0b)
01:05.0 Class 0300: 1002:4752 (rev 27)
02:01.0 Class 0200: 14e4:1648 (rev 03)
02:01.1 Class 0200: 14e4:1648 (rev 03)
02:02.0 Class 0100: 1000:0030 (rev 07)

[root at opteron lm_sensors-2.8.4]# i2cdetect
Error: No i2c-bus specified!
Syntax: i2cdetect I2CBUS
   I2CBUS is an integer
   i2cdetect -l lists installed busses only
   Installed I2C busses:
     i2c-0       smbus           SMBus AMD756 adapter at 80e0            
Non-I2C SMBus adapter
[root at opteron lm_sensors-2.8.4]# i2cdetect 0
   WARNING! This program can confuse your I2C bus, cause data loss and 
worse!
   I will probe file /dev/i2c-0
   You have five seconds to reconsider and press CTRL-C!

      0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
00: XX XX XX XX XX XX XX XX 08 XX XX XX XX XX XX XX
10: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX
20: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX
30: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX
40: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX
50: XX XX 52 53 XX XX XX XX XX XX XX XX XX XX XX XX
60: XX XX XX XX XX XX XX XX XX 69 XX XX XX XX XX XX
70: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX


[root at opteron lm_sensors-2.8.4]# uname -a
Linux opteron 2.4.22-1.2135.nptlsmp #1 SMP Mon Dec 15 15:45:38 EST 2003 
x86_64 x86_64 x86_64 GNU/Linux