[ltp] UltraBay Slim removal

[Peter F. Patel-Schneider]

I'm running 2.6.29 (Fedora 11 beta) so I guess that the dock driver will
be doing the work.  However, I don't see anything happening when I eject
the lever.  How can I figure out what is going wrong?

peter


From: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Subject: Re: [ltp] UltraBay Slim removal
Date: Wed, 22 Apr 2009 00:07:42 -0300

> On Tue, 21 Apr 2009, Peter F. Patel-Schneider wrote:
>> Does anyone know how the Ultrabay Slim physical actions are mapped into
>> events that Linux (Fedora, in my case) can respond to?
> 
> Yes.  On any non-ancient thinkpad, dock and bay actions are two-step.
> On the first step, we get a notification from ACPI that the lever is
> "out".  Then we do whatever we should do, and issue the acpi eject
> command, which powers down the bay/dock.  Then the user does the
> second step (remove the device/undock).
> 
> In a new-enough kernel (2.6.28+), the dock driver (which also takes
> care of the bays) will issue an uevent when you eject the lever.  I am
> not sure how well it works on 2.6.27, but it _is_ supposed to work
> in 2.6.27.
> 
> If the dock driver isn't working on your kernel, you can configure
> thinkpad-acpi with the legacy bay and dock support, it will give you
> acpi events to hook to.  Check the documentation.  It is incompatible
> with ACPI-aware libata, and it is incompatible with the T60 bay.  Your
> best bet really is the standard dock driver.
> 
>> In particular, is there an event that corresponds to moving the latch
>> that lets the device eject lever pop out?  
> 
> Yes, see above.
> 
> -- 
>   "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