[ltp] What does i2c_i801 do on a Thinkpad x60s

[Henrique de Moraes Holschuh]

On Mon, 02 Feb 2009, Holger Levsen wrote:
> On Montag, 2. Februar 2009, Henrique de Moraes Holschuh wrote:
> > > Are there any (newer) thinkpad models were i2c* is useful?
> > I wouldn't know, since all I have is a T43.  But I doubt it.
> 
> I dont know much about i2c, maybe you know how can i find out?

i2c is a bus.  And some of the stuff that sits on that bus is TOUCH
AND DIE, such as voltage regulators and the PLL clock generator.  You
can brick your laptop if you do the wrong thing in that bus.

Install the lm-sensors stuff, and try sensors-detect.  It shouldn't
find anything useful.  Maybe some eeproms, which are RAM module data
(mess with it, and you need to buy new RAM)).  sensors-detect will
attempt to stay clear from the more dangerous stuff.

And never run it on old thinkpads, a chip IBM used to hold vital
product data has a bug and it will brick the laptop when hit by the
i2c-dev/sensors-detect probe sequence.

-- 
  "One disk to rule them all, One disk to find them. One disk to bring
  them all and in the darkness grind them. In the Land of Redmond
  where the shadows lie." -- The Silicon Valley Tarot
  Henrique Holschuh