[ltp] 770X Error codes?

[Bill Mair]

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Fabrice Bellet wrote:
> Did you play with lm_sensors by any chance ? and more precisely
> with the eeprom reading modules provided with lm_sensors ?
> 
> I broke my thinkpad hardware several time with this program. The
> symptom was exactly the same. The laptop needed to be repaired
> at the IBM tech center.  Motherboard changed.
> 
> The eeprom module from the lm_sensors package
> theorically reads information from SDRAM eeprom and provides
> a /proc/sys/dev/sensors/eeprom*/ entry for this stuff
> (RAM delay, capacity, and so on) : one entry per RAM module.
> These eeprom are accessed via the SMBus.
> 
> The problem is that the mainboard serial number is stored in
> an eeprom too, that also responds on this bus (but in a bad way
> apparently) when you read the /proc/sys/dev/sensors data.
> I assume that the content of the motherboard eeprom is erased or
> altered. And this prevent the laptop from restarting (It must check
> that this value is correct before doing anything else).

Dear Fabrice,

When did you do this ?
And when were you aware of this problem ?
Why didn't you warn us here on the list that playing around with the I2C
lm_sensors stuff breaks ThinkPads ?

I'm now I'm really worried about the 2.4 kernel, if any distribution
enables
this stuff by default and probes the I2C bus looking for lm_sensors
support
will this then break my ThinkPad ???

Oh god, life is about to get very complicated installing V2.4.x kernel
based
distributions...

-----

Dear IBM (there are more than 50 of you here),

can any of you please help explain just what is going on with this I2C
bus
stuff and how we can patch/fix the drivers so that this won't happen ?

-----

Dear linux distributors (there are more than 10 of you here),

Please let your people know about this potentially very dangerous
problem,
this may also affect other PC's, not just IBM's ThinkPads. There would
be nothing worse for the Linux community than an massive wave of "I just
installed xxxx Linux xxx with a 2.4.x kernel and it totally hosed my
system".

The press, and M$ would have a field day with this.

So please, please, don't have the I2C stuff enabled by default until
this
situation is clarified.

-----

All LTP mailing list members (currently more than 550),

If you ever managed to break your system using Linux or a Linux product
then please inform the list members as soon as you can, so that this
kind
of situation ("Oh I broke my one too doing that") doesn't happen again.

-----

Sorry for ranting but I can't afford to break my ThinkPad, and this kind
of news really makes the shivers run down my back.

And to think that I was goinng to try the back ports for sensors
support,
I shudder at the thought.

Bill (for the first time I'm worried about upgrading Linux) Mair.
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