Hello. I'm using a Lenovo IdeaPad Y510p (64bits) with dual booting (W8.1 and Linux Ubuntu 14.04 LTS). From several weeks ago I've problems for booting Ubuntu. The screen becomes black with many lines of messages without end. I need to switch off the computer and restarting it. Then I select in Grub "Advanced options". I can see several kernel alternatives from 3.13.0-35-generic to 34, 32, 29 and 24. 35, 34 and 32 don't work. I need to select 29 and all is OK. But I think is not OK that three kernels don't work with my system.
The GRUB version is 2.02~beta2-9ubuntu1.
My Linux version:
Linux 3.13.0-29-generic #53-Ubuntu SMP Wed Jun 4 21:00:20 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux