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    recalbox not work well with DPI LCD on 4B

    Recalbox General
    recalbox dpi lcd
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    • ian57
      ian57 Staff last edited by

      @DRAgon734235 that's srtrange but it may comes from the Pi4 3D Accel. Try to comment out the 3D acceleration for pi4 to fall back in Pi3-like running.
      With Pi4 3D accel, only 180° rotation is allowed in framebuffer, 90 and 270 do not work

      You need to comment

      #dtoverlay=vc4-kms-v3d
      

      in /boot/config.txt
      After you should able to rotate the display as in your Pi3 config.

      "UNIX is basically a simple operating system, but you have to be a genius to understand the simplicity." Dennis Ritchie

      DRAgon734235 1 Reply Last reply Reply Quote 0
      • DRAgon734235
        DRAgon734235 @Zing last edited by

        @Zing
        DPI LCD same configuration 3B work well

        But 4B just stay at this recalbox logo image
        alt text

        1 Reply Last reply Reply Quote 0
        • DRAgon734235
          DRAgon734235 @ian57 last edited by

          @ian57 said in recalbox not work well with DPI LCD on 4B:

          #dtoverlay=vc4-kms-v3d

          After comment
          #dtoverlay=vc4-kms-v3d

          Still stay at recalbox logo image

          ian57 1 Reply Last reply Reply Quote 0
          • ian57
            ian57 Staff @DRAgon734235 last edited by ian57

            @DRAgon734235 seems that Emulationstation does not like unaccelerated Pi4 config.

            When I'll have some time will check on my geekworm dpi screen

            "UNIX is basically a simple operating system, but you have to be a genius to understand the simplicity." Dennis Ritchie

            DRAgon734235 1 Reply Last reply Reply Quote 0
            • DRAgon734235
              DRAgon734235 @ian57 last edited by

              @ian57 said in recalbox not work well with DPI LCD on 4B:

              geekworm

              OK ,

              think you

              1 Reply Last reply Reply Quote 0
              • DRAgon734235
                DRAgon734235 last edited by

                @ian57 @Zing

                have news ?

                ian57 1 Reply Last reply Reply Quote 0
                • ian57
                  ian57 Staff @DRAgon734235 last edited by

                  @DRAgon734235 Hi,

                  It works well... but no rotation 90/270° available from the firmware and the overlay... the fondation doc DOES NOT work!

                  perhaps a lead.. i read something about that the kernel 5.10 supports all rotation from the accelerated overlay... so we need to b*mp to test...

                  As a sum up ... All the screen are working with acceleration but no 90° 270° actually
                  only 180°

                  "UNIX is basically a simple operating system, but you have to be a genius to understand the simplicity." Dennis Ritchie

                  1 Reply Last reply Reply Quote 0
                  • DRAgon734235
                    DRAgon734235 last edited by

                    my 4b stay at this
                    alt text

                    Do you have any suggestion ? (Even in “rotate=0” )

                    1 Reply Last reply Reply Quote 0
                    • DRAgon734235
                      DRAgon734235 last edited by

                      @ian57
                      Do you have any suggestion ?

                      ian57 1 Reply Last reply Reply Quote 0
                      • ian57
                        ian57 Staff @DRAgon734235 last edited by

                        @DRAgon734235 hdmi or dpi ?
                        which screen ?

                        "UNIX is basically a simple operating system, but you have to be a genius to understand the simplicity." Dennis Ritchie

                        1 Reply Last reply Reply Quote 0
                        • DRAgon734235
                          DRAgon734235 last edited by

                          @ian57
                          https://www.aliexpress.com/item/1005001659074233.html?spm=a2g0o.productlist.0.0.9cc286b4PDloaM&algo_pvid=05efcf4a-b64c-4624-b3b0-7450fe193177&algo_expid=05efcf4a-b64c-4624-b3b0-7450fe193177-13&btsid=0b86d81616125235002752171e1e1f&ws_ab_test=searchweb0_0,searchweb201602_,searchweb201603_

                          Waveshare 2.8inch dpi LCD

                          ian57 1 Reply Last reply Reply Quote 0
                          • ian57
                            ian57 Staff @DRAgon734235 last edited by

                            @DRAgon734235 this screen has 480x640 resolution so you need to rotate it (90 or 270). Actually it seems not to be supported in frambuffer, only with xrandr in GUI. I saw this https://www.raspberrypi.org/documentation/configuration/cmdline-txt.md and tried it but it only works with 0-180° not with 90-270.

                            "UNIX is basically a simple operating system, but you have to be a genius to understand the simplicity." Dennis Ritchie

                            1 Reply Last reply Reply Quote 0
                            • DRAgon734235
                              DRAgon734235 last edited by DRAgon734235

                              @ian57

                              I do not rotate the LCD with 90 or 270, the LCD display as the default direction like this image

                              alt text

                              and the recalbox stay at this picture always

                              ian57 1 Reply Last reply Reply Quote 0
                              • ian57
                                ian57 Staff @DRAgon734235 last edited by

                                @DRAgon734235 I think you need to use the fdmk overlay instead of the dmks overlay : here is may configuration for my 800x480 dpi screen

                                temp_soft_limit=70
                                dtoverlay=vc4-fkms-v3d
                                 
                                 
                                # custom config
                                [all]
                                #3.5 HD tft screen 800x480
                                dtoverlay=dpi18
                                disable_overscan=1
                                 
                                overscan_left=0
                                overscan_right=0
                                overscan_top=0
                                overscan_bottom=0
                                 
                                hdmi_force_hotplug=1
                                 
                                 
                                #geekwrom
                                framebuffer_width=800
                                framebuffer_height=480
                                #dtparam=spi=off
                                #dtparam=i2c_arm=off
                                enable_dpi_lcd=1
                                display_default_lcd=1
                                dpi_output_format=0x6f015
                                dpi_group=2
                                dpi_mode=87
                                hdmi_timings=480 0 16 16 24 800 0 4 2 2 0 0 0 60 0 32000000 6
                                #display_rotate=3
                                

                                "UNIX is basically a simple operating system, but you have to be a genius to understand the simplicity." Dennis Ritchie

                                DRAgon734235 2 Replies Last reply Reply Quote 0
                                • DRAgon734235
                                  DRAgon734235 @ian57 last edited by

                                  @ian57
                                  I use recalbox-rpi4 7.1

                                  this is my code :

                                  dtoverlay=vc4-fkms-v3d
                                  max_framebuffers=1
                                  overscan_scale=1
                                  
                                  overscan_left=0
                                  overscan_right=0
                                  overscan_top=0
                                  overscan_bottom=0
                                  
                                  hdmi_force_hotplug=1
                                  
                                  framebuffer_width=480
                                  framebuffer_height=800
                                  
                                  gpio=0-9=a2
                                  gpio=12-17=a2
                                  gpio=20-25=a2
                                  dtoverlay=dpi18
                                  enable_dpi_lcd=1
                                  display_default_lcd=1
                                  #extra_transpose_buffer=2
                                  dpi_group=2
                                  dpi_mode=87
                                  dpi_output_format=0x7F216
                                  hdmi_timings=480 0 26 16 10 640 0 25 10 15 0 0 0 60 0 32000000 1
                                  dtoverlay=waveshare-28dpi-3b-4b
                                  
                                  

                                  The recalbox still stay at that recalbox logo picture always

                                  1 Reply Last reply Reply Quote 0
                                  • DRAgon734235
                                    DRAgon734235 @ian57 last edited by

                                    @ian57

                                    Your recalbox is 4.6 ?

                                    ian57 1 Reply Last reply Reply Quote 0
                                    • ian57
                                      ian57 Staff @DRAgon734235 last edited by ian57

                                      @DRAgon734235 nop, 7.2 beta 🙂 do you have something connected on HDMI?

                                      "UNIX is basically a simple operating system, but you have to be a genius to understand the simplicity." Dennis Ritchie

                                      DRAgon734235 1 Reply Last reply Reply Quote 0
                                      • DRAgon734235
                                        DRAgon734235 @ian57 last edited by

                                        @ian57
                                        I have tried to connect or not connect HDMI LCD , the HDMI LCD not display

                                        they do not have any effect

                                        ian57 1 Reply Last reply Reply Quote 0
                                        • ian57
                                          ian57 Staff @DRAgon734235 last edited by

                                          @DRAgon734235 here is my complete config.txt :

                                          ############################################################################
                                          # Boot loader configuration                                                #
                                          # Warning: do not edit this file as it will be overwritten when upgrading! #
                                          ############################################################################
                                          
                                          # Using /etc/modules is deprecated and no longer supported on 4.4 kernel
                                          # So manually enable audio
                                          dtparam=audio=on
                                          
                                          # if you plug your tv at the same time as your rpi and that the rpi switches from the hdmi or
                                          # give a low resolution because tv had no enough time to initialize it
                                          boot_delay=3
                                          
                                          # disable boot rainbow
                                          disable_splash=1
                                          
                                          # default CEC name
                                          cec_osd_name=recalbox
                                          
                                          avoid_safe_mode=1
                                          
                                          kernel=boot/linux
                                          initramfs boot/initrd.gz
                                          
                                          # force hdmi while the tv can take time before sending the signal on the hdmi output
                                          hdmi_force_hotplug=1
                                          
                                          # total amount of GPU memory
                                          gpu_mem_256=128
                                          gpu_mem_512=256
                                          gpu_mem_1024=448
                                          
                                          # your settings can be set in /boot/recalbox-user-config.txt
                                          include recalbox-user-config.txt
                                          # Raise the first security limit up to 70° instead of 60° for pi3 and pi4
                                          [pi3]
                                          temp_soft_limit=70
                                          
                                          [pi4]
                                          temp_soft_limit=70
                                          dtoverlay=vc4-fkms-v3d
                                          #max_framebuffer=2
                                          
                                          
                                          # custom config
                                          [all]
                                          #3.5 HD tft screen 800x480
                                          dtoverlay=dpi18
                                                                      
                                          #geekwrom DPI 480x800 TFT display
                                          enable_dpi_lcd=1            
                                          display_default_lcd=1       
                                          dpi_output_format=0x6f015   
                                          dpi_group=2                 
                                          dpi_mode=87                 
                                          hdmi_timings=480 0 16 16 24 800 0 4 2 2 0 0 0 60 0 32000000 6
                                          #display_rotate=3

                                          "UNIX is basically a simple operating system, but you have to be a genius to understand the simplicity." Dennis Ritchie

                                          DRAgon734235 1 Reply Last reply Reply Quote 0
                                          • DRAgon734235
                                            DRAgon734235 @ian57 last edited by

                                            @ian57

                                            thank you

                                            where can I download recalbox 7.2 beta ?

                                            I will try that

                                            ian57 1 Reply Last reply Reply Quote 0
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