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    Please do not post a support request without first reading and following the advice in https://retropie.org.uk/forum/topic/3/read-this-first

    KMS goes to black screen with recent kernel

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    • saccublendaS
      saccublenda @Blerkotron
      last edited by

      @blerkotron Yes, I confirm that, ES is working fine for me because I have switched off navigation sounds. It is a combination of new kernel, KMS and audio.
      I wonder if it is a RetroPie problem or a kernel problem.

      1 Reply Last reply Reply Quote 0
      • busywaitB
        busywait @saccublenda
        last edited by busywait

        @saccublenda Yes, I've seen this. I asked about it on the Raspberry Pi forum: https://www.raspberrypi.org/forums/viewtopic.php?f=28&t=316721

        A few utilities to collect debug information were suggested, but they need building from source, I don't know how to use them, and I'm busy, so [shrug]

        I assume that the Raspberry Pi OS team will be debugging this over the next few months as they move towards a Bullseye based release, so I'm just waiting.

        busywaitB 1 Reply Last reply Reply Quote 2
        • busywaitB
          busywait @busywait
          last edited by

          An almost related comment from a Raspberry Pi engineer over on the RPi forums:

          If [screen tearing] bothers you, it may be worth waiting for the bullseye image which will kms by default, which is the real solution for tearing

          \o/

          saccublendaS 1 Reply Last reply Reply Quote 2
          • saccublendaS
            saccublenda @busywait
            last edited by

            @busywait Yeah, I guess that a RetroPie image based on bullseye will fix it.

            DarksaviorD 1 Reply Last reply Reply Quote 0
            • DarksaviorD
              Darksavior @saccublenda
              last edited by

              I tried the unofficial manual upgrade to bullseye but the problem didn't go away. I'm sure there's much more to it, but I wanted to try.
              https://www.raspberrypi.org/forums/viewtopic.php?f=29&t=317888

              busywaitB 1 Reply Last reply Reply Quote 0
              • busywaitB
                busywait @Darksavior
                last edited by busywait

                @darksavior I ran that script on a clean 64-bit install too. It was a smooth process but still some problems

                • I was warned on the forum that there are still missing packages in the raspberry pi maintained bullseye repos (that's independent of the debian Bullseye release and repos)
                • Raspberry Pi haven't previously supported upgrades to new OS versions
                • The package python3-sdl2 that is needed by the RetroPi installer doesn't install because of unmet dependencies (at least last week when I tried)
                • No, the blank screen issue is not fixed (yet?)

                However, it will be good that kms becomes the default. I wonder how long until the RetroPie install script will support it [the bullseye distro]? 🤔

                saccublendaS DarksaviorD 2 Replies Last reply Reply Quote 0
                • saccublendaS
                  saccublenda @busywait
                  last edited by

                  @busywait said in KMS goes to black screen with recent kernel:

                  I wonder how long until the RetroPie install script will support it?

                  I think we have to wait for an official bullseye Raspberry Pi OS image (2-4 months from now), and then for a RetroPie image based on the former.

                  1 Reply Last reply Reply Quote 1
                  • DarksaviorD
                    Darksavior @busywait
                    last edited by

                    @busywait I only tried 32 bit and retroarch wouldn't compile due to missing sdl2 dependancies until I used this repo https://github.com/joolswills/RetroPie-Setup/tree/sdl_2.0.16

                    saccublendaS 1 Reply Last reply Reply Quote 1
                    • saccublendaS
                      saccublenda @Darksavior
                      last edited by

                      Just as an update, the official bullseye Raspberry Pi OS image was just released.

                      sirhenrythe5thS 1 Reply Last reply Reply Quote 1
                      • sirhenrythe5thS
                        sirhenrythe5th @saccublenda
                        last edited by

                        @devs: just to get an idea: as soon as bullseye will be the base of retropie: will we have to build a new image, or will buster be upgradable to bullseye?

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                        mituM 1 Reply Last reply Reply Quote 0
                        • mituM
                          mitu Global Moderator @sirhenrythe5th
                          last edited by

                          @sirhenrythe5th said in KMS goes to black screen with recent kernel:

                          will we have to build a new image, or will buster be upgradable to bullseye?

                          New image, as always.

                          sirhenrythe5thS 1 Reply Last reply Reply Quote 1
                          • sirhenrythe5thS
                            sirhenrythe5th @mitu
                            last edited by

                            @mitu thanks for info, i will start the backup :D

                            -- Retro-Achievements Username: SirALX --
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                            mituM 1 Reply Last reply Reply Quote 0
                            • mituM
                              mitu Global Moderator @sirhenrythe5th
                              last edited by

                              @sirhenrythe5th I wouldn't be in such a hurry.

                              1 Reply Last reply Reply Quote 1
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