I was recently doing some tinkering to try to get my Thinkpad w550s working properly with an ultra dock and multiple displays - in doing this it appears as though I have removed some packages necessary for X and Unity to operate properly. When I boot into Ubuntu I'm thrown into a black screen. I can jump into a terminal so I am able to tinker around a bit.
I'm fairly certain this is where I broke it: https://ptpb.pw/SW9r/sh#L-9
Since realizing things no longer worked I have tried to install the
ubuntu-desktop package but it seems apt is unhappy.
When I try to install
ubuntu-desktop I get this:
Reading package lists... Building dependency tree... Reading state information... Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: unity-control-center : Depends: libcheese-gtk23 (>= 3.4.0) but it is not going to be installed Depends: libcheese7 (>= 3.0.1) but it is not going to be installed
I'm happy to provide any additional information that can help identify the actual problem as I am clearly speculating as to the actual problem.
EDIT: This problem was caused by packages for 15.10 being installed on this machine. Uncertain how I did this, but upon removing them and reinstalling the 14.04 packages all was well.