[ltp] Re: [ibm-acpi-devel] cannot resume after hotplugging an ultrabay battery in T61p

[Henrique de Moraes Holschuh]

On Wed, 21 Jan 2009, Marc MERLIN wrote:
> I realize this is a corner case, I've only hit it a few times since I
> typically do not use my ultrabay battery, but I can reproduce this with
> multiple kernels (up to 2.6.28):

It would be nice to know which kernel does NOT show the problem, even if it
is somewhat old.

> I boot the laptop with a DVD drive, work.
> My main battery gets low, I hotswap the DVD out and put an ultrabay
> battery in.
> Hotplug works fine, the new battery even shows up as battery #2 in
> 'acpi', the command line tool.
> 
> If I remove the ultrabay battery after hotswapping the main battery,
> things work ok after that.
> If I leave the ultrabay battery and suspend the laptop, on resume I get
> text mode and blinking cursor and nothing after that, the laptop is just
> dead.

What is the kernel configuration you're using, please?

> Can you reproduce and possibly fix? 

I can't seem to reproduce it on my T43.

> (it's hard for me to give debug since the laptop is dead on resume)

Usually you can get it to output data to the serial port (serial console) or
a network console, but that requires another computer to which you can send
the data to see it.

-- 
  "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