GPU Installation: Desktop Does Not Load Unity Afterwards
I've got a weird problem after installing a new GPU in my desktop. Everything goes awesome until I log into Ubuntu. After I type in my password and log in, all that shows is my wallpaper and mouse cursor: there is no panel or unity dash. I can move my cursor around the screen, but a right-click does not trigger the usual cursor menu. Keyboard shortcuts also do not work. Before I installed the GPU, I did the usual apt-get update and apt-get upgrade, so everything not-GPU-related should be up to date.
Isn't this weird? I was expecting either everything to work or nothing to work at all, but what happened was somewhere in between. I'm guessing there's a little, trivial thing I overlooked or forgot to do.
Previously, I just had an APU, and now I've added a GPU into a PCI slot. So both an APU and a GPU are running. (They're compatible with each other too; I checked.) I also installed a new power supply at the same time, but I doubt that would make a difference.
Any ideas before I do a fresh install? Keep being awesome, Ubuntu men.
Here's my tech specs:
OS: Ubuntu 14.04 64 bit
APU: AMD Kaveri A10-7850K
GPU: AMD Radeon HD7970 (Sapphire)
Laptop: ASUS k53e, Intel i5 2410M CPU, 120GB Samsung SSD - Ubuntu 14.04 (64 bit) and Windows 7 (64 bit)
Desktop: ASUS A88X motherboard, AMD Kaveri A10-7850K APU, AMD Radeon HD7970 GPU, 8GB Mushkin RAM, 250GB Samsung 840 SSD - Ubuntu 14.04 (64 bit)