Comment 0 for bug 1640200

This bug is about my Gateway M1629 not shutting down screen stops at reached . I can reproduce it every time. I also have a problem with booting up ( may be related) that has to do with the timing. If I click on ubunto LTS in grub screen it boots to a black screen. But if I make it wait by clicking on boot options and then back to ubuntu it boots fine!
The bug about hanging was reported so many times. I am not sure if is the kernel or the bios? too many answers but never one fix! can someone help please?
Thanks,
David