Created attachment 1527061 [details]
dmesg from boot 4.20.5-200.fc29

1. Please describe the problem:
Since kernel 4.20.5-200.fc29 broken display brightness.

2. What is the Version-Release number of the kernel:
Linux localhost.localdomain 4.20.5-200.fc29.x86_64 #1 SMP Mon Jan 28 19:29:17 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

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 :
Yes, with 4.20.4-200.fc29.x86_64 and before.

4. Can you reproduce this issue? If so, please provide the steps to reproduce
   the issue below:
Always.
Boot kernel 4.20.5-200.fc29.x86_64

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``:
I can't install Rawhide kernel.
:(

[root@localhost kirya]# dnf update --enablerepo=rawhide kernel
Last metadata expiration check: 0:07:17 ago on Tue 05 Feb 2019 11:31:28 AM MSK.
Dependencies resolved.
================================================================================
 Package                 Arch      Version                    Repository   Size
================================================================================
Installing:
 kernel                  x86_64    5.0.0-0.rc4.git3.1.fc30    rawhide      22 k
 kernel-core             x86_64    5.0.0-0.rc4.git3.1.fc30    rawhide      27 M
 kernel-modules          x86_64    5.0.0-0.rc4.git3.1.fc30    rawhide      29 M
Removing:
 kernel                  x86_64    4.19.15-300.fc29           @updates      0  
 kernel-core             x86_64    4.19.15-300.fc29           @updates     60 M
 kernel-modules          x86_64    4.19.15-300.fc29           @updates     27 M
Removing dependent packages:
 kernel-modules-extra    x86_64    4.19.15-300.fc29           @updates    2.1 M

Transaction Summary
================================================================================
Install  3 Packages
Remove   4 Packages

Total size: 56 M
Is this ok [y/N]: y
Downloading Packages:
[SKIPPED] kernel-5.0.0-0.rc4.git3.1.fc30.x86_64.rpm: Already downloaded        
[SKIPPED] kernel-core-5.0.0-0.rc4.git3.1.fc30.x86_64.rpm: Already downloaded   
[SKIPPED] kernel-modules-5.0.0-0.rc4.git3.1.fc30.x86_64.rpm: Already downloaded
warning: /var/cache/dnf/rawhide-2d95c80a1fa0a67d/packages/kernel-5.0.0-0.rc4.git3.1.fc30.x86_64.rpm: Header V3 RSA/SHA256 Signature, key ID cfc659b9: NOKEY
Fedora - Rawhide - Developmental packages for t 1.6 kB/s | 1.6 kB     00:01    
Importing GPG key 0x429476B4:
 Userid     : "Fedora 29 (29) <fedora-29>"
 Fingerprint: 5A03 B4DD 8254 ECA0 2FDA 1637 A20A A56B 4294 76B4
 From       : /etc/pki/rpm-gpg/RPM-GPG-KEY-fedora-29-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-5.0.0-0.rc4.git3.1.fc30.x86_64.rpm is not installed. Failing package is: kernel-5.0.0-0.rc4.git3.1.fc30.x86_64
 GPG Keys are configured as: file:///etc/pki/rpm-gpg/RPM-GPG-KEY-fedora-29-x86_64
Public key for kernel-core-5.0.0-0.rc4.git3.1.fc30.x86_64.rpm is not installed. Failing package is: kernel-core-5.0.0-0.rc4.git3.1.fc30.x86_64
 GPG Keys are configured as: file:///etc/pki/rpm-gpg/RPM-GPG-KEY-fedora-29-x86_64
Public key for kernel-modules-5.0.0-0.rc4.git3.1.fc30.x86_64.rpm is not installed. Failing package is: kernel-modules-5.0.0-0.rc4.git3.1.fc30.x86_64
 GPG Keys are configured as: file:///etc/pki/rpm-gpg/RPM-GPG-KEY-fedora-29-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
[root@localhost kirya]#


6. Are you running any modules that not shipped with directly Fedora's kernel?:
No.

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.