dear JD,
thanks for your quick reply...
i didn't know i could've fried my machine doing these things. thanks for
the warning.
well, i was really hoping my notebook had hardware monitoring sensors.
> Hi JF,
>
> > i have spent several hours trying to figure out how to
> > setup lm-sensors. i have slowly made progress, and was
> > almost able to achieve complete success. i am not sure
> > though if i made the correct steps. let me share my
> > experience in the hope that you could help me sort this
> > one out.
> >
> > a) system
> >
> > - Ubuntu Dapper
> > 2.6.15-26-386
> >
> > - compiled lm-sensors.2.10.0
> >
> > - pertinent output of lspci
> > -------------------------
> >
> > 0000:00:1f.3 SMBus: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) SMBus Controller (rev 04)
> >
> > b) pertinent output of sensors-detect
> > ----------------------------------
> >
> > Probing for PCI bus adapters...
> > Use driver `i2c-i801' for device 00:1f.3: Intel 82801FB ICH6
> > Probe succesfully concluded.
>
> First of all, please not that this is the SMBus, i2c-i801, and NOT
> i2c-i810, the graphics adapter, as your mail subject has.
>
thanks... i got this wrong.
> > Next adapter: SMBus I801 adapter at 1400
> > Do you want to scan it? (YES/no/selectively):
> > Client found at address 0x08
> > Client found at address 0x44
> > Probing for `Maxim MAX6633/MAX6634/MAX6635'... Failed!
> > Client found at address 0x50
> > Probing for `SPD EEPROM'... Success!
> > (confidence 8, driver `eeprom')
> > Probing for `DDC monitor'... Failed!
> > Probing for `Maxim MAX6900'... Failed!
> > Client found at address 0x52
> > Probing for `SPD EEPROM'... Success!
> > (confidence 8, driver `eeprom')
> > Client found at address 0x69
>
>
> What this means is that you have no hardware monitoring chips on this
> bus. Hardware monitoring chips live at 0x28-0x2f or 0x48-0x4f most of
> the time.
valuable information. might be able to use this when i try this on other
machines...
>
> > $ lsmod |grep i2c
> >
> > i2c_dev 9984 0
> > i2c_i801 9100 0
> > i2c_core 21904 2 eeprom, i2c_dev,i2c_i801
> >
> > problem started when i used "sensors". the results came out as
> >
> > Can't access procfs/sysfs file
> > Unable to find i2c bus information;
> > For 2.6 kernels, make sure you have mounted sysfs and libsensors
> > was compiled with sysfs support!
> > For older kernels, make sure you have done 'modprobe i2c-proc'!
>
> This is a misleading error message, which (I believe) has been fixed
> since. What it really means is: no sensors found.
>
noted....
> > c) i tried playing around with i2cdump using the addresses of devices i got with "sensors-detect"
> >
> > c1) results of "i2cdump 0x08"
> > (...)
> > c2) "i2cdump 0x44"
>
> These are SMBus 2.0 special addresses, not real chips.
>
> > c3) "i2cdump 0x50"
> > --------------
> >
> > 0 1 2 3 4 5 6 7 8 9 a b c d e f 0123456789abcdef
> > 00: 80 08 07 0d 0b 01 40 00 04 60 70 00 82 08 00 01 ??????@.?`p.??.?
> > 10: 0e 04 0c 01 02 20 c0 75 70 00 00 48 30 48 2a 80 ????? ?up..H0H*?
> > 20: 75 75 45 45 00 00 00 00 00 3c 48 30 2d 55 00 00 uuEE.....<H0-U..
> > 30: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 41 ...............A
> > 40: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
> > 50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
> > 60: 00 00 00 00 60 00 00 00 28 12 05 01 0a 00 00 00 ....`...(????...
> > 70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
> > 80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................
> > 90: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................
> > a0: ff ff ff ff ff ff ff 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 ................
> >
> > c4) "i2cdump 0x52"
> > --------------
> >
> > 0 1 2 3 4 5 6 7 8 9 a b c d e f 0123456789abcdef
> > 00: 80 08 07 0d 0b 01 40 00 04 60 70 00 82 08 00 01 ??????@.?`p.??.?
> > 10: 0e 04 0c 01 02 20 c0 75 70 00 00 48 30 48 2a 80 ????? ?up..H0H*?
> > 20: 75 75 45 45 00 00 00 00 00 3c 48 30 2d 55 00 00 uuEE.....<H0-U..
> > 30: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 41 ...............A
> > 40: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
> > 50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
> > 60: 00 00 00 00 60 00 00 00 28 12 05 01 0a 00 00 00 ....`...(????...
> > 70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
> > 80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................
> > 90: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................
> > a0: ff ff ff ff ff ff ff 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 ................
>
> These are your memory module EEPROMS. Use "decode-dimms.pl" for decoded
> data.
>
> >
> > c5) "i2cdump 0x69"
> >
> > 0 1 2 3 4 5 6 7 8 9 a b c d e f 0123456789abcdef
> > 00: 0f 0f 0f 0f 0f 0f 0f 0f 0f 0f 0f 0f 0f 0f 0f 0f ????????????????
> > 10: 0f 0f 0f 0f 0f 0f 0f 0f 0f 0f 0f 0f 0f 0f 0f 0f ????????????????
> > 20: 0f 0f 0f 0f 0f 0f 0f 0f 0f 0f 0f 0f 0f 0f 0f 0f ????????????????
> > 30: 0f 0f 0f 0f 0f 0f 0f 0f 0f 0f 0f 0f 0f 0f 0f 0f ????????????????
> > 40: 0f 0f 0f 0f 0f 0f 0f 0f 0f 0f 0f 0f 0f 0f 0f 0f ????????????????
> > 50: 0f 0f 0f 0f 0f 0f 0f 0f 0f 0f 0f 0f 0f 0f 0f 0f ????????????????
> > 60: 0f 0f 0f 0f 0f 0f 0f 0f 0f 0f 0f 0f 0f 0f 0f 0f ????????????????
> > 70: 0f 0f 0f 0f 0f 0f 0f 0f 0f 0f 0f 0f 0f 0f 0f 0f ????????????????
> > 80: 39 7f f7 c6 e5 01 75 01 0f 07 00 cd 3c eb 2f 88 9?????u???.?<?/?
> > 90: 00 53 b8 f5 1c 00 XX d3 d3 d3 d3 d3 d3 d3 d3 d3 .S???.X?????????
> > a0: 39 7f f7 c6 e5 01 75 01 0f 07 00 cd 3c eb 2f 88 9?????u???.?<?/?
> > b0: 00 53 b8 f5 1c 00 XX d3 d3 d3 d3 d3 d3 d3 d3 d3 .S???.X?????????
> > c0: 39 7f f7 c6 e5 01 75 01 0f 07 00 cd 3c eb 2f 88 9?????u???.?<?/?
> > d0: 00 53 b8 f5 1c 00 XX d3 d3 d3 d3 d3 d3 d3 d3 d3 .S???.X?????????
> > e0: 39 7f f7 c6 e5 01 75 01 0f 07 00 cd 3c eb 2f 88 9?????u???.?<?/?
> > f0: 00 53 b8 f5 1c 00 XX d3 d3 d3 d3 d3 d3 d3 d3 d3 .S???.X?????????
>
> This is some clock chip which you better don't touch.
>
> > d) i tried to guess what chip/device to use. i experimented with adm1021:
> >
> > d1) modprobe adm1021 force=0,0x08
> >
> > "sensors" give:
> >
> > max1617-i2c-0-08
> > Adapter: SMBus I801 adapter at 1400
> >
> > Board: -1?C (low = -1?C, high = -1?C) ALARM (LOW,HIGH)
> > CPU: -1?C (low = -1?C, high = -1?C) ALARM (N/A,LOW,HIGH)
> >
> > d2) modprobe adm1021 force=0,0x44; "sensors" give
> >
> > lm84-i2c-0-44
> > Adapter: SMBus I801 adapter at 1400
> >
> > Board: +0?C (low = +0?C, high = +0?C)
> > CPU: +0?C (low = +0?C, high = +0?C)
> >
> > d3) modprobe adm1021 force=0,0x50; "sensors" give
>
> Naaaah! DON'T EVER DO THIS AGAIN.
>
> If some of our documentation gave you the idea to try that, please
> point me to it, so that I can fix it.
>
None of the documentation told me to do this... It was out of
desperation to install lm-sensors. Arrgh... only to find out i had no
hardware sensors.
> This chip (and the one at 0x52) are memory module EEPROMs. They contain
> data relative to the type, size, speed etc. of your memory. Forcing a
> hardware monitoring chip to use this address would corrupt the data if
> the EEPROM isn't write-protected. And I've seen memory modules
> unprotected already (Kingston.)
>
> Let's just hope it's not too late. You can i2cdump 0x50 and 0x52 again
> and make sure they return exactly the same data as before.
> decode-dimms.pl will complain too if the checksums are no more correct.
> If so, don't power down your computer, tell me, and I'll give you
> detailed instructions to save your memory modules.
>
the information i posted above was AFTER i forced the use of the
address. i have since unloaded the modules and i2cdump shows the same
information. i am attaching herewith the output of decode-dimms.pl.
seems nothing anomalous. what do you think?
> > d5) modprobe adm1021 force=0,0x69
> >
> > max1617-i2c-0-69
> > Adapter: SMBus I801 adapter at 1400
> >
> > Board: +15?C (low = +15?C, high = +15?C)
> > CPU: +15?C (low = +15?C, high = +15?C) ALARM (N/A,LOW)
> >
> > This last seem to be the closest. But for sure, it gives me incorrect
> > information (15?C for CPU!)...
>
> This is definitely wrong AND dangerous, you could lock up your system.
>
> > Am I doing the right thing?
>
> No, not at all. The sensors-detect output is very clear that you have
> no hardware monitoring chip on your SMBus. All chips you see on the
> SMBus are NOT hardware monitoring chips, don't even try.
>
> You may have hardware monitoring features integrated into a Super-I/O
> chip, although sensors-detect seemingly didn't find any. You may
> provide the Super-I/O part of the output of sensors-detect for further
> analysis.
>
> Which system is this? If this is a laptop, I'm not surprised, most
> laptops don't have (accessible) hardware monitoring chips.
>
i thought this SHOULD be a basic feature of laptops. oh well... do you
think there is any other option for me to get CPU temperature (and fan
control?)
thanks again!
-------------- next part --------------
PC DIMM Serial Presence Detect Tester/Decoder
By Philip Edelbrock, Christian Zuckschwerdt, Burkart Lingner,
Jean Delvare and others
Version 2.10.0
Decoding EEPROM: /sys/bus/i2c/drivers/eeprom/0-0050
Guessing DIMM is in bank 1
---=== The Following is Required Data and is Applicable to all DIMM Types ===---
EEPROM Checksum of bytes 0-62 OK (0x41)
# of bytes written to SDRAM EEPROM 128
Total number of bytes in EEPROM 256
Fundamental Memory type DDR SDRAM
Number of Row Address Bits (SDRAM only) 13
Number of Col Address Bits (SDRAM only) 11
Number of Module Rows 1
Data Width (SDRAM only) 64
Module Interface Signal Levels SSTL 2.5
Cycle Time (SDRAM) highest CAS latency 6ns
Maximum module speed DDR 333MHz (PC2700)
Access Time (SDRAM) 7ns
Module Configuration Type No Parity
Refresh Type Self Refreshing
Refresh Rate Reduced (7.8uS)
Primary SDRAM Component Bank Config No Bank2 OR Bank2 = Bank1 width
Primary SDRAM Component Widths 8
Error Checking SDRAM Component Bank Config No Bank2 OR Bank2 = Bank1 width
Error Checking SDRAM Component Widths Undefined!
Min Clock Delay for Back to Back Random Access 1
---=== The Following Apply to SDRAM DIMMs ONLY ===---
Burst lengths supported Burst Length = 2
Burst Length = 4
Burst Length = 8
Number of Device Banks 4
Supported CAS Latencies CAS Latency = 3
CAS Latency = 4
Supported CS Latencies CS Latency = 0
Supported WE Latencies WE Latency = 1
SDRAM Module Attributes Differential Clock Input
SDRAM Device Attributes (General) Lower VCC Tolerance: 10%
Upper VCC Tolerance: 10%
Undefined (bit 6)
Undefined (bit 7)
SDRAM Cycle Time (2nd highest CAS) 7.5nS
SDRAM Access from Clock Time (2nd highest CAS) 7nS
---=== The Following are Optional (may be Bogus) ===---
SDRAM Cycle Time (3rd highest CAS) Undefined!
SDRAM Access from Clock Time (3rd highest CAS) Undefined!
---=== The Following are Required (for SDRAMs) ===---
Minimum Row Precharge Time 72nS
Row Active to Row Active Min 48nS
RAS to CAS Delay 72nS
Min RAS Pulse Width 42nS
---=== The Following are Required and Apply to ALL DIMMs ===---
Row Densities 512 MByte
---=== The Following are Proposed and Apply to SDRAM DIMMs ===---
Command and Address Signal Setup Time 7.5nS
Command and Address Signal Hold Time 7.5nS
Data Signal Setup Time 4.5nS
Data Signal Hold Time 4.5nS
SPD Revision code 0
Manufacturer Level One Communication
Manufacturing Location Code 0x00
Part Number Undefined
Revision Code 0x0000
Manufacturing Date 0x0000
Assembly Serial Number 0x00000000
Intel Specification for Frequency Undefined!
Intel Spec Details for 100MHz Support Junction Temp B (100 degrees C)
Single Sided DIMM
Decoding EEPROM: /sys/bus/i2c/drivers/eeprom/0-0052
Guessing DIMM is in bank 3
---=== The Following is Required Data and is Applicable to all DIMM Types ===---
EEPROM Checksum of bytes 0-62 OK (0x41)
# of bytes written to SDRAM EEPROM 128
Total number of bytes in EEPROM 256
Fundamental Memory type DDR SDRAM
Number of Row Address Bits (SDRAM only) 13
Number of Col Address Bits (SDRAM only) 11
Number of Module Rows 1
Data Width (SDRAM only) 64
Module Interface Signal Levels SSTL 2.5
Cycle Time (SDRAM) highest CAS latency 6ns
Maximum module speed DDR 333MHz (PC2700)
Access Time (SDRAM) 7ns
Module Configuration Type No Parity
Refresh Type Self Refreshing
Refresh Rate Reduced (7.8uS)
Primary SDRAM Component Bank Config No Bank2 OR Bank2 = Bank1 width
Primary SDRAM Component Widths 8
Error Checking SDRAM Component Bank Config No Bank2 OR Bank2 = Bank1 width
Error Checking SDRAM Component Widths Undefined!
Min Clock Delay for Back to Back Random Access 1
---=== The Following Apply to SDRAM DIMMs ONLY ===---
Burst lengths supported Burst Length = 2
Burst Length = 4
Burst Length = 8
Number of Device Banks 4
Supported CAS Latencies CAS Latency = 3
CAS Latency = 4
Supported CS Latencies CS Latency = 0
Supported WE Latencies WE Latency = 1
SDRAM Module Attributes Differential Clock Input
SDRAM Device Attributes (General) Lower VCC Tolerance: 10%
Upper VCC Tolerance: 10%
Undefined (bit 6)
Undefined (bit 7)
SDRAM Cycle Time (2nd highest CAS) 7.5nS
SDRAM Access from Clock Time (2nd highest CAS) 7nS
---=== The Following are Optional (may be Bogus) ===---
SDRAM Cycle Time (3rd highest CAS) Undefined!
SDRAM Access from Clock Time (3rd highest CAS) Undefined!
---=== The Following are Required (for SDRAMs) ===---
Minimum Row Precharge Time 72nS
Row Active to Row Active Min 48nS
RAS to CAS Delay 72nS
Min RAS Pulse Width 42nS
---=== The Following are Required and Apply to ALL DIMMs ===---
Row Densities 512 MByte
---=== The Following are Proposed and Apply to SDRAM DIMMs ===---
Command and Address Signal Setup Time 7.5nS
Command and Address Signal Hold Time 7.5nS
Data Signal Setup Time 4.5nS
Data Signal Hold Time 4.5nS
SPD Revision code 0
Manufacturer Level One Communication
Manufacturing Location Code 0x00
Part Number Undefined
Revision Code 0x0000
Manufacturing Date 0x0000
Assembly Serial Number 0x00000000
Intel Specification for Frequency Undefined!
Intel Spec Details for 100MHz Support Junction Temp B (100 degrees C)
Single Sided DIMM
Number of SDRAM DIMMs detected and decoded: 2
