[ltp] EC Hanging with latest tp-smapi (0.29)

[Henrique de Moraes Holschuh]

On Sun, 20 Aug 2006, TNKS wrote:
>     thinkpad_ec: thinkpad_ec_request_row: EC is mysteriously silent
>                  (0x01:0x00)->0xa0
>     thinkpad_ec: thinkpad_ec_read_row: failed requesting row:
>                  (0x01:0x00)->0xfffffffb
>     thinkpad_ec: thinkpad_ec_request_row: bad initial STR3: 
>                  (0x01:0x00)->0xa0

Not good.

> I seem to get the hung EC both with and without the dmi kernel patch that
> 0.29 comes with.  However, it seems to be a lot worse (happens sooner)

DMI should not matter at *all* to your case.   If it does, something Really
Bad is happening.

Now, please run your "EC hang" script using a function that *IS* implemented
in your thinkpad.  Can you still trigger it?   If you can still trigger it,
what happens if you do the same test in *single user mode* ?

Notes:

  WHEN DEBUGGING EC HANGS:
  1. Remove the battery, use only the ac adapter (easier on the TP hardware,
     and also safer)
  2. Use hdparm to set the HD to spin down after a few seconds right before
     the test, so that you can wait for the HD to spin down by itself BEFORE
     you have to unplug a hung ThinkPad.  This is much better for your HD,
     unplugging the ThinkPad with an unparked HD is bad for the HD's health.

-- 
  "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