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[Saint DanBert <297663@xxxxxxxxxxxxxxxxxx>]

My Thinkpad X61-tablet (7764CTO) has various trouble with the Ultrabase(tm) and suspend:resume.
There is a mechanical button on the left of the ultrabase for end-user to Request_Undock.
Under win-dose, this causes a request for hibernation and associated power-off shutdown.
The end-user will then separate the ultrabase and restart the system.
On restart, win-dose will announce that parts are missing (due to ultrabase disconnect)
but will wake-up in a functional state.

ANALYSIS:
This Ultrabase is a port replicator that includes various network, telephony, and USB connectors
as well as connectors for the external video monitor. In addition, there is an UltraBay(tm) for connection 
of a CD or DVD or HDD drive or a secondary battery pack.

I suspect that drivers for the various USB hubs and port replications or "disk drives" do not
correctly or adequately sweep the desk during suspend and are thus is a confused state on wake.
It is my experience that "confused drivers" most often lead to something not responding or kernel panic
or both.

~~~ 0;-Dan

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https://bugs.launchpad.net/bugs/297663

Title:
  Thinkpad X61 tablet - resume hangs after undocking and subsequent suspend to RAM