Created attachment 1682696 [details]
dmesg.txt

1. Please describe the problem:
On my MacBookPro13,3 the built-in display doesn't work anymore since I've updated the kernel to 5.6

2. What is the Version-Release number of the kernel:
5.6.6-200


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 :

5.6.6-200

4. Can you reproduce this issue? If so, please provide the steps to reproduce
   the issue below:

Boot the kernel, I'm using refind as bootloader.


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've tried 5.6.7-200.fc31 (updates-testing), same problem.


6. Are you running any modules that not shipped with directly Fedora's kernel?:

Yes, kmod-macbook12-spi-driver to use the built-in keyboard (sigh...)


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.

Done.