Recent Kernels failing to boot?

[fruktopus@gmail.com (Stephan Müller)]

Am 02.09.2014 13:14, schrieb John Whitmore:
> I'm not even sure that this is the correct home for this question but sure
> it's worth a punt. I'm running OpenSUSE on a netbook and use it to compile and
> install the latest kernel from Linus's git repo. This has always been a simple
> operation pulling the latest, updating the config file, make and install.
> 
> A few versions ago I hit a snag in that once installed the new kernel would
> show up in the grub2 menu but once selected for boot the machine would just go
> to a blank screen and hang. I'd have to do a hard reset. I can't be specific
> on which version this started happening on as the problem is intermittent. It
> seems to be a race condition sometimes a kernel will boot and sometimes it
> won't.
> 
> I thought I could investigate this issue but I can't find any debug info for
> this problem at all. grub2 is happy as it's handed control over to the kernel
> but there's no evidence of any kernel activity in the logs at all for the
> requested boot.
> 
> So the reason for this post is to ask if anybody could suggest how to debug
> this issue. I think it came in about 3.14 but like I say it's intermittent.
> 


Hi,
some time ago I had a similar problem. It was caused by an invalid grub.cfg. Have a look there, maybe your kernel never gets started.

  stephan