Created attachment 1548488 [details]
result of: # journalctl --no-hostname -k > dmesg.txt

1. Please describe the problem:
no sound since the latest one or two kernel releases

2. What is the Version-Release number of the kernel:
4.20.16-100.fc28.x86_64

3. Did it work previously in Fedora? If so, what kernel version did the issue
   *first* appear?  Old kernels are available for download at
   https://koji.fedoraproject.org/koji/packageinfo?packageID=8 :
don't remember if it still worked on 4.20.15-100
if I remember correctly, with kernel 4.20.15-100 there was an issue with recompiling vmware modules

4. Can you reproduce this issue? If so, please provide the steps to reproduce
   the issue below:
e.g. play a youtube clip


5. Does this problem occur with the latest Rawhide kernel? To install the
   Rawhide kernel, run ``sudo dnf install fedora-repos-rawhide`` followed by
   ``sudo dnf update --enablerepo=rawhide kernel``:
==> does not work out of the box:

warning: /var/cache/dnf/rawhide-2d95c80a1fa0a67d/packages/kernel-core-5.1.0-0.rc1.git2.1.fc31.x86_64.rpm: Header V3 RSA/SHA256 Signature, key ID 3c3359c4: NOKEY
Importing GPG key 0x9DB62FB1:
 Userid     : "Fedora 28 (28) <fedora-28>"
 Fingerprint: 128C F232 A937 1991 C8A6 5695 E08E 7E62 9DB6 2FB1
 From       : /etc/pki/rpm-gpg/RPM-GPG-KEY-fedora-28-x86_64
Is this ok [y/N]: y
Key imported successfully
Import of key(s) didn't help, wrong key(s)?
Public key for kernel-core-5.1.0-0.rc1.git2.1.fc31.x86_64.rpm is not installed. Failing package is: kernel-core-5.1.0-0.rc1.git2.1.fc31.x86_64
 GPG Keys are configured as: file:///etc/pki/rpm-gpg/RPM-GPG-KEY-fedora-28-x86_64
Public key for kernel-5.1.0-0.rc1.git2.1.fc31.x86_64.rpm is not installed. Failing package is: kernel-5.1.0-0.rc1.git2.1.fc31.x86_64
 GPG Keys are configured as: file:///etc/pki/rpm-gpg/RPM-GPG-KEY-fedora-28-x86_64
Public key for kernel-modules-5.1.0-0.rc1.git2.1.fc31.x86_64.rpm is not installed. Failing package is: kernel-modules-5.1.0-0.rc1.git2.1.fc31.x86_64
 GPG Keys are configured as: file:///etc/pki/rpm-gpg/RPM-GPG-KEY-fedora-28-x86_64
The downloaded packages were saved in cache until the next successful transaction.
You can remove cached packages by executing 'dnf clean packages'.
Error: GPG check FAILED


6. Are you running any modules that not shipped with directly Fedora's kernel?:
I don't understand: do you mean, whether I use pkgs that are not from fc28 repos?
s6> dnf repolist
...
Failed to synchronize cache for repo 'nuxref-shared', disabling.
Last metadata expiration check: 0:00:00 ago on Wed 27 Mar 2019 10:59:26 AM CET.
repo id                                  repo name                                                  status
*fedora                                  Fedora 28 - x86_64                                         57,327
google-chrome                            google-chrome                                                   3
nuxref                                   RHEL 28 - nuxref.com                                           23
rpm-sphere                               RPM Sphere                                                 10,717
*rpmfusion-free                          RPM Fusion for Fedora 28 - Free                               563
*rpmfusion-free-updates                  RPM Fusion for Fedora 28 - Free - Updates                     280
*rpmfusion-nonfree-nvidia-driver         RPM Fusion for Fedora 28 - Nonfree - NVIDIA Driver             15
*updates                                 Fedora 28 - x86_64 - Updates                               21,633


7. Please attach the kernel logs. You can get the complete kernel log
   for a boot with ``journalctl --no-hostname -k > dmesg.txt``. If the
   issue occurred on a previous boot, use the journalctl ``-b`` flag.