Kernel Crash

Home » CentOS » Kernel Crash
CentOS 4 Comments

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 (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.

4 thoughts on - Kernel Crash

  • Diego Farias wrote:

    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?


  • patch and another sed for EL 7.4.

    The elrepo wl-kmod.srpm includes both and can build kmod-wl on your system for you by following the instructions at:


  • I’m sorry for all this trouble; I followed ElRepo’s instructions and now I
    have wifi! (someday I will fix bluetooth).

    2017-10-12 18:52 GMT-03:00 Diego Farias :