Bad news.

 v3.18-rc2-utopic screws things up completely and the system doesn't
boot.

The symptoms are as follows: 
- the initramdisk doesn't show the password prompt to unlock the full disk 
encryption.
- the external usb keyboard doesn't work (i.e. I can't use ESC to hide the 
splash screen on the external keyboard but I can use ESC on the internal 
keyboard. However it is not a complete USB outage since both, the keyboard and 
mouse are showing lights. The external keyboard does work during grub though)
- after hiding the splash screen it tells me something about not finding any 
volume groups (not really surprising if it skips the disc encryption...)

I tried to run dpkg -i on the three kernel packages again to re-generate
the initramdisk and look for errors. I didn't see any relevant messages
and it still failed to boot. The kernel packages I used were

linux-headers-3.18.0-031800rc2_3.18.0-031800rc2.201410262035_all.deb
linux-headers-3.18.0-031800rc2-generic_3.18.0-031800rc2.201410262035_amd64.deb
linux-image-3.18.0-031800rc2-generic_3.18.0-031800rc2.201410262035_amd64.deb

I dare say, there is another issue at work here than the one we were
dealing with so far.

** Changed in: linux (Ubuntu)
       Status: Incomplete => Confirmed

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https://bugs.launchpad.net/bugs/1384041

Title:
  [Dell Precision M3800] USB is dead after resume from sleep

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