I have a 64-bit System76 computer and this problem also affects me. My kernel is 3.19.0-22-generic. I am using factory-installed Ubuntu 15.04, but I've been running updates regularly.
I can still boot my original 3.19.0-21-generic kernel just fine, and do my work on that kernel without any problems.
I have a 64-bit System76 computer and this problem also affects me. My kernel is 3.19.0-22-generic. I am using factory-installed Ubuntu 15.04, but I've been running updates regularly.
I can still boot my original 3.19.0-21-generic kernel just fine, and do my work on that kernel without any problems.