On a Toshiba Portege R835-P56X set up as a dual boot with Windows, I have Ubuntu 14.10 on one side. Yesterday morning, there was a security upgrade that, I saw, included a new Linux kernel version.
Nothing since. Can log in, but beyond that, nothing. Wallpaper shows, mouse moves, but nothing on the top, nothing on sides (I use Unity). The thing just sits there.
Once, it generated a 'serious internal error' message. It seemed to say--if I read it right--that the problem was "kernel oops" and the report was sent.
Are others experiencing this problem (I looked around here and didn't see anything similar)?
Is there some way--any way--of fixing this? Or are there Ubuntu-experienced repair people in the Minneapolis-Saint Paul area? Or do I just write off that side of this computer?
Any constructive advice would be greatly appreciated--I really prefer to run Ubuntu to Windows--and thanks in advance.