Public bug reported:

Hi,

I'm running a kubuntu raring on a sony vaio z series (svz1311c5e) and I
also have the sony docking station.

With the linux-kernel-3.5 I can have plug and play working with every
devices of the docking station but upgrading to 3.8 the plug and play is
still not working. If I connect the docking station before turning on
the computer everithing works  but if I disconnect and reconnect it
again every device in the docking station doesn't work.

The docking station is connected through light peak (thunderbolt).
Using the kernel 3.5 I can unplug and plug in the docking and every devices 
will be refreshed, except the usb hub which is still not working.  With the 
version 3.8 if I plug the docking station after the boot every device of the 
docking station doesn't work.

Anyway everything works fine if I plug in the docking station before the
boot.

The plug and play of those devices doesn't work also with every vanilla
kernel, so I think it's a patch introduced by ubuntu in the kernel
version 3.5.

In order to assure the support for every new vaio I suggest to include
in your kernels also the last version of the module sony-laptop. This
module is already included in main line but the version is outdated and
several things don't work. I asked to the maintainer about that and he
said that the module will be upgraded as soon as he can find the enough
time to rewrite it in an acceptable way. Anyway the version provided by
his git seems to be stable, or at least I had no problems with that.

I suggest to include the last version of this module under the ubuntu
kernel packages. You can find the last version here:
http://git.kamineko.org/cgi-bin/gitweb.cgi?p=linux-
sony-2.6.git;a=summary

Thank you for your support

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: Incomplete

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https://bugs.launchpad.net/bugs/1159418

Title:
  plug and play with thunderbolt devices was working with 3.5 but is
  still not working with 3.8

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