Been using Ubuntu for years, consider myself kind of an advanced user, and I assure you I have spent the better half of the day trying things and googling around.
Here's what happened:
Upgraded my 64bit 13.10 to 14.04 this afternoon (upgrade, not a fresh install) on a Lenovo X1 Carbon which had previously worked flawlessly out of the box.
The first restart upon finished installation/upgrade rendered my machine unusable:
- I see no bios/lenovo screen upon powering on the machine
- screen stays blank (HD activity, screen is lit)
What I can do:
- plug a HDMI cord into the machine and use the laptop from my TV. Laptop screen stays blank
What I can't do (and here is where it gets weird):
- I cannot boot a live USB installation. Either because it just doesn't work, or it works but I don't see anything (because of the blank screen). At any rate, even if it works (which I cannot tell), in that option the 2nd screen isn't on.
HOW can I reset/reinstall my complete OS if I cant do a from-USB-installation? Is there a way (scripts, terminal commands etc) to reset all the boot parameters, grub, graphics drivers etc...?
How would I roll back to 13.10? So I am basically running a current daily 14.04
Help is much much apprciated. I am totally frustrated, I have no backup laptop to take to work with