Comment # 28 on bug 1183839 from Bruno Friedmann

(In reply to Takashi Iwai from comment #27)
> OK, then could you try to uninstall Nvidia package once, rebuild initrd and
> check whether initrd still contains the sound module?  If it's still there,
> uninstall vbox once and check again.  If both drivers are uninstalled but
> still the sound module gets dragged, some other configuration must be the
> cause.  Maybe better to ask dracut people for taking a look.  A typical
> cause in that case is some leftover setup for the kernel.

Hello Takashi, sorry was off a few days.

I've tried by uninstalling nvidia and virtualbox, and rebuild with my dracut
exclusion configuration file. snd modules are present in the initrd.

I was not yet able to disconnect everything (take the laptop out of the base
without any additionnal peripheral like screens, webcam etc). Perhaps the snd
come now from one of those, but the laptop serve here a central datacenter with
a lot of vms so no easy to get out of order to make tests (sorry)

I'm pretty sure it is not nvidia, nor virtualbox, and on another computer, with
both installed snd doesn't appear on initrd.
:-(

Hopefully the trick of using an omit_driver with dracut works, and allow me to
use again the computer. So in a sense it now works for me, we just don't know
why it failed ....