* HOWTO
** Open ports
#+begin_src sh
$ firewall-cmd --add-port=8000/tcp
#+end_src
To make permanent, either:
- run the command with =--permanent=, and restart ~firewalld~ for
  immediate application,
- run the command /a second time/ with =--permanent=,
- run ~firewall-cmd --runtime-to-permanent~.
** Fix broken Nvidia drivers after upgrade
Reinstall Nvidia kernel module:
#+begin_src sh
$ sudo zypper in -f nvidia-gfxG05-kmp-default
#+end_src