[ltp] T30 Docking Problem

D. Sen linux-thinkpad@linux-thinkpad.org
Sun, 01 Dec 2002 16:25:00 -0500


So this feature is only while the laptop battery is charging? If the
battery is 100% charged, the laptop can be released? How does it work in
   Window$?

Thanks,
DS

Lee Colleton wrote:
 > On Fri, 2002-11-29 at 13:34, D. Sen wrote:
 >
 >>I just bought a docking station for my T30 and am having trouble
 >>releasing the laptop from the docking station. So far, I have only been
 >>able to detach the machine by switching off power (literally pulling out
 >>the plug) to the docking station.
 >>
 >>Is this the correct mode of operation for the docking station or is the
 >>unit malfunctioning? If it IS the correct mode, how are you meant to
 >>detach the machine without needing to power it down?
 >>
 >>DS
 >>
 >>
 >
 > I noticed the same "feature" with my 560X and it's docking station; The
 > dock will latch the ThinkPad in place while it is charging.  Two
 > effective ways to release this latch without shutting down entirely are:
 > 1. Put the ThinkPad in suspend mode by pressing Fn+F4 (on the 560X)
 > 2. Remove power to the docking station.  I have my dock's power routed
 > through a surge protector which makes this a simple matter.
 > This feature is not documented so far as I can tell, but is probably in
 > place to prevent power surges from damaging the dock or attached
 > equipment.  The ThinkPad's DC/DC power card can handle the surge of
 > disconnecting the supply while power is applied, but attached
 > monitors/drives/etc. may not be protected.
 >
 > Here is a link to the IBM ThinkPad Dock User's Guide:
 > 
http://www.pc.ibm.com/qtechinfo/MIGR-4UYLS4.html?lang=en_US&page=brand&brand=root&doctype=&subtype=Cat&up=unknownuser
 >
 > Lee

-- 
D. Sen, PhD
http://www.auditorymodels.org/~dsen