Diego Farias wrote:

Hi everyone,

I updated the kernel from 3.10.0-514.16.1.el7.x86_64 to 3.10.0-693.2.2.el7.x86_64 . While I was following these steps https://wiki.centos.org/HowTos/Laptops/Wireless/Broadcom (I knew that I needed to compile again everything) in order to activate WIFI, the laptop crashed doing

# depmod -a # modprobe wl

Noting that I replaced (naively) # depmod $(uname -r) from the guide (stupid mistake, I use tcsh and the command above didn't work; that's why the replacement).

After the crash, I had to manually shutdown the laptop. Then, I booted the same kernel and it went to 'emergency mode'; as I don't have the root password (second stupid mistake; I'm superuser but I don't remember the root password/nor I can change it -I don't know-) I couldn't do a thing.

Then, I booted the previous kernel, 3.10.0-514.16.1.el7.x86_64 (which works fine), removed 3.10.0-693.2.2.el7.x86_64 (yum remove), and reinstalling it from zero. Oddly, when I boot with the new kernel, the laptop crashes before login; the caps lock light tilts and nothing happens. I've done this several times and the same.

I know I can use the older kernels to work, but I really want to fix this if possible.

Thanks in advance.

Congrats. It's nice to know other folks have the same problem I do, except mine was on a honkin' Dell R730 server with lots of cores and memory.

Btw, folks, the normal update installs teh "with debugging" as an option; I *assuem* that it has crash kernel enabled. However, /etc/kdump.conf is default configured to dump to /var/crash, which has nothing at all in it. Also - I believe I mentioned it, it kernel panics *just* as it tries to switch root.

Diego, can you tell if you're getting a kernel panic?

mark