Problem with kernels 3.16.2-200 and 3.16.2-201

[Michael D. Setzer II]

Ran the update today, and saw the new kernels, but then had about 2/3 of 
the machines have the same issue with just getting a blank screen after the 
reboot and trying to load the kernel as I had seen with the 3.16.2-200 kernel.

The machines are all new Lenovo ThinkCentre systems from January, so not 
clear what is going on. Had gone back to the previous 3.15.10 kernel that 
work fine with all. Not sure why the 1/3 booted? Would expect all or none? I 
have found that using the edit option on grub menu and modifying it would 
get it to work sometimes. Sometimes just using edit and F10 with no changes 
would work, sometime entering a blank line would work. Sometime removing 
the  rhgb or quiet would do it??

modified the /etc/default/grub and removed the rhgb quiet and used the 
grub2-mkconfig -o /boot/grub2/grub.cfg 
and then did a test and all 20 machines booted just fine. Have no clue as to 
why that would have an effect? Didn't see any error messages, so not clear 
on why 2/3rds of machine wouldn't boot after the yum update with the new 
kernels. 


+----------------------------------------------------------+
  Michael D. Setzer II -  Computer Science Instructor      
  Guam Community College  Computer Center                  
  mailto:mikes at kuentos.guam.net                            
  mailto:msetzerii at gmail.com
  http://www.guam.net/home/mikes
  Guam - Where America's Day Begins                        
  G4L Disk Imaging Project maintainer 
  http://sourceforge.net/projects/g4l/
+----------------------------------------------------------+

http://setiathome.berkeley.edu (Original)
Number of Seti Units Returned:  19,471
Processing time:  32 years, 290 days, 12 hours, 58 minutes
(Total Hours: 287,489)

BOINC at HOME CREDITS
ROSETTA     19863285.050956   |   SETI        33654218.686661
ABC         16613838.513356   |   EINSTEIN    33323307.787900