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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

    Can´t change emulators - Tried a command and now its weird.

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    • mituM
      mitu Global Moderator @lesk
      last edited by mitu

      @lesk Since you're just beginning, I'd say you start over again, you may have messed up your folder permissions and who knows where/how they're broken.
      To change emulators, use the Runcommand launch menu - https://retropie.org.uk/docs/Runcommand/#runcommand-launch-menu - there's no need to edit any file.

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        lesk @mitu
        last edited by lesk

        @mitu
        Thanks for the reply!

        I have used the Runcommand launch menu. It was when I was trying to change emulators for arcade games that I discovered that, whenever I choose an emulator for the rom it gave me that permission denied message in the bottom.

        That's when I searched this forum for a solution. Found the thread I linked to. It gave a list of commands to try, and I tried them.
        Now it's all messed up.

        Unfortunately, I've spent a lot of hours setting up Retropie the way I want it. Fortunately, I made a backup yesterday before this happen.

        But. If I go use my backup, I will still not be able to change emulators. Any idéa why?

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

          @lesk said in Can´t change emulators - Tried a command and now its weird.:

          But. If I go use my backup, I will still not be able to change emulators. Any idéa why?

          Post the error you get when changing the emulators and it's not working and we'll try to figure it out.

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          • L
            lesk @mitu
            last edited by

            @mitu
            I get this error:
            /opt/retropie/configs/all/<bunch of letters that seems random> permission denied

            It appears for like a half second on the bottom left screen when I try changing emulators.

            To make things even weirder... It stopped when I used this command: sudo chown -R pi:pi /opt/retropie/configs. But only when I choose default emulator for all roms. Changing video setting for emulator, or changing specific emulator for rom still gives me that message.

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

              @lesk There's no such thing as default emulator for all ROMs, you can only set a default emulator for a system or a ROM since there is no single emulator to run every type of ROMs. What exactly are you trying to accomplish ? Be specific - which ROM, which system, etc. ?

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              • L
                lesk @mitu
                last edited by

                @mitu said in Can´t change emulators - Tried a command and now its weird.:

                @lesk There's no such thing as default emulator for all ROMs, you can only set a default emulator for a system or a ROM since there is no single emulator to run every type of ROMs. What exactly are you trying to accomplish ? Be specific - which ROM, which system, etc. ?

                Well in the Runcommand launch window it says - Default emulator for all roms.

                Above I wrote:
                " It was when I was trying to change emulators for arcade games that I discovered that, whenever I choose an emulator for the rom it gave me that permission denied message in the bottom."

                But it applies to all systems. Nes, Snes, GBA and Arcade. Those are the ones I've checked.

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                • mituM
                  mitu Global Moderator
                  last edited by mitu

                  I can't reproduce this on a stock 4.4 system. Runcommand will modify the file /opt/retropie/configs/<system>/emulators.cfg, were <system> is the system where you want to change the emulator. The files are owned by the user pi, so if you fiddled with the permissions, check the user has write access to them. As an example, here is my /opt/retropie/configs/emulators.cfg

                  lr-fbalpha = "/opt/retropie/emulators/retroarch/bin/retroarch -L /opt/retropie/libretrocores/lr-fbalpha/fbalpha_libretro.so --config /opt/retropie/configs/arcade/retroarch.cfg %ROM%"
                  lr-mame2003 = "/opt/retropie/emulators/retroarch/bin/retroarch -L /opt/retropie/libretrocores/lr-mame2003/mame2003_libretro.so --config /opt/retropie/configs/arcade/retroarch.cfg %ROM%"
                  advmame = "/opt/retropie/emulators/advmame/bin/advmame %BASENAME%"
                  default = "lr-fbalpha"
                  
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                  • L
                    lesk @mitu
                    last edited by

                    @mitu
                    Don't think I´ve fiddled with any permissions. I have followed guides to change themes, add background music and to hide boot text, emulationstation, and the raspberries to show at boot.

                    How can I check that the user has write access? I´m a total noob when it comes to linux commands etc.

                    mituM dankcushionsD 2 Replies Last reply Reply Quote 0
                    • mituM
                      mitu Global Moderator @lesk
                      last edited by

                      @lesk You can list the permissions from the command line with ls

                      # show the permissions for the NES system
                      ls -l /opt/retropie/configs/nes/emulators.cfg
                      
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                      • L
                        lesk @mitu
                        last edited by

                        @mitu
                        Ah okay.
                        So I press F4 on the keyboard to open up the terminal.
                        Type in ls -l /opt/retropie/configs/nes/emulators.cfg to see what permission the NES system has?

                        Would I see all permissions if I just do ls -l /opt/retropie/configs

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                        • dankcushionsD
                          dankcushions Global Moderator @lesk
                          last edited by

                          @lesk said in Can´t change emulators - Tried a command and now its weird.:

                          @mitu
                          Don't think I´ve fiddled with any permissions.

                          but then

                          On the last post there is a link to another thread with a command that I first tried:

                          sudo chown -R pi:pi /opt/retropie/configs

                          that's "fiddling with permissions" :)

                          anyway, one thing you can try: https://github.com/RetroPie/RetroPie-Setup/wiki/FAQ#reset-ownershippermissions-of-homepiretropie-roms

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                          • L
                            lesk @dankcushions
                            last edited by

                            @dankcushions said in Can´t change emulators - Tried a command and now its weird.:

                            @lesk said in Can´t change emulators - Tried a command and now its weird.:

                            @mitu
                            Don't think I´ve fiddled with any permissions.

                            but then

                            On the last post there is a link to another thread with a command that I first tried:

                            sudo chown -R pi:pi /opt/retropie/configs

                            that's "fiddling with permissions" :)

                            anyway, one thing you can try: https://github.com/RetroPie/RetroPie-Setup/wiki/FAQ#reset-ownershippermissions-of-homepiretropie-roms

                            Hahaha, that just shows how much of a noob I am ^^
                            Thanks, I will try this when I'm back home.

                            1 Reply Last reply Reply Quote 1
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