Comment 17 for bug 2025565

Just as info, in case someone else has the same problem. While I was trying to fix the issue, I did:
sudo apt update && sudo apt upgrade -y
and then
sudo apt --fix-broken install
And then I have restarted and I have received a black screen. To fix it:
Boot in recovery mode -> go to networking -> press y to enable networking. Then go to the menu dpkgs, press y to start the fix/upgradre. In my case 27 new packages were installed and some removed.Then (if like in my case, it worked), continue the boot.

It looks like I am using nvidia drivers. This is the output of sudo lshw -c video

  *-display
       description: VGA compatible controller
       product: GP104 [GeForce GTX 1080]
       vendor: NVIDIA Corporation
       physical id: 0
       bus info: pci@0000:01:00.0
       version: a1
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress vga_controller bus_master cap_list rom
       configuration: driver=nvidia latency=0

Although this not tells me which version. If I check the log /var/log/Xorg.0.log, i see:
[ 27.309] ABI class: X.Org Server Extension, version 10.0
[ 27.427] (==) Matched nouveau as autoconfigured driver 0
[ 27.427] (==) Matched modesetting as autoconfigured driver 1
[ 27.427] (==) Matched fbdev as autoconfigured driver 2
[ 27.427] (==) Matched vesa as autoconfigured driver 3
[ 27.427] (==) Assigned the driver to the xf86ConfigLayout
[ 27.427] (II) LoadModule: "nouveau"
[ 27.427] (II) Loading /usr/lib/xorg/modules/drivers/nouveau_drv.so
[ 27.429] (II) Module nouveau: vendor="X.Org Foundation"
[ 27.429] compiled for 1.21.1.3, module version = 1.0.17
[ 27.429] Module class: X.Org Video Driver
[ 27.429] ABI class: X.Org Video Driver, version 25.2

So, it works running the nvidia nouveau drivers 25.2. But for my daily work I need to use the proprietary drivers, as a couple of software don't work.