Problems after installing retrOSMCmk2

My rpi 3+ after installing retROSMCmk2 is have Settings > System > Display > Display mode greyed out.
Settings > System > Audio > Audio output device is also greyed out.

Every time I navigate to Settings > System > Audio there is few seconds lag.

There is no sound coming out from either HDMI or 3.5mm plug.

My pi osmc box is freezing after few hours of uptime after upgrading to November 2021 update. (this might be separate issue, but I think this information may needed)

Have similar issue as here Failed to start Load Kernel Modules
Have errors on boot

[DEPEND] Dependency failed for Remote File Systems.
[DEPEND] Dependency failed for retrOSMCmk2 app-switcher.

these 3 lines are repeating in ~/.kodi/temp/kodi.log:

2021-12-16 22:44:02.589 T:584      INFO <general>: CActiveAESink::OpenSink - initialize sink
2021-12-16 22:44:02.589 T:584     ERROR <general>: CActiveAESink::OpenSink - no sink was returned
2021-12-16 22:44:02.589 T:583     ERROR <general>: ActiveAE::InitSink - returned error

log file

Can someone help to point which part should be fixed?

That’s because you have enabled the fkms dtoverlay=vc4-fkms-v3d,cma-512

Thank you for the reply. It is written on /boot/Config.txt I believe it shouldn’t be there. But if I commented that, osmc have sad face and constantly restarting mediacenter.service

How to get log from osmc with that state?

Login via SSH and run grab-logs -A

changing dtoverlay=vc4-fkms-v3d,cma-512 to dtoverlay=vc4-kms-v3d,cma-512 on /boot/config.txt fixed the issue. Should not comment this line.