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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

Raspberry Pi 3 B Black Screen on Dell Monitor

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dellu3014hdmi
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  • Z
    Zachariel
    last edited by 8 Jan 2018, 10:03

    Pi Model or other hardware: B and Dell u3014 via HDMI to HDMI
    RetroPie Version Used: v4.3

    Hey all, I'm mostly just wondering if anyone has any info on whether or not this combination has ever worked. Two days of reading every forum post under the sun, and fiddling with the config.txt for hours has yielded nothing but a black screen, and I can find no info on anyone every using this setup. I'm just wondering if I'm barking up the wrong tree.

    Thanks!

    R 1 Reply Last reply 8 Jan 2018, 12:10 Reply Quote 0
    • R
      rbaker @Zachariel
      last edited by 8 Jan 2018, 12:10

      @zachariel said in Raspberry Pi 3 B Black Screen on Dell Monitor:

      config.txt

      Post a copy for us to see

      1 Reply Last reply Reply Quote 0
      • Z
        Zachariel
        last edited by 8 Jan 2018, 12:21

        It's simply the base config.txt that I tried every different combination of force HDMI hotplug, HDMI groups and modes, and HDMI boost that I could think of.

        R M 2 Replies Last reply 8 Jan 2018, 12:29 Reply Quote 0
        • R
          rbaker @Zachariel
          last edited by 8 Jan 2018, 12:29

          @zachariel said in Raspberry Pi 3 B Black Screen on Dell Monitor:

          I tried every different combination of force HDMI hotplug, HDMI groups and modes, and HDMI boost that I could think of

          post a copy for us to see how you tried and what you typed.....

          https://retropie.org.uk/forum/topic/3/read-this-first

          Z 1 Reply Last reply 8 Jan 2018, 12:38 Reply Quote 0
          • M
            mitu Global Moderator @Zachariel
            last edited by 8 Jan 2018, 12:29

            @zachariel Normally there is no need to modify the config.txt and HDMI output should work out-of-the-box. Have you tried a different monitor/tv or a different cable ?

            1 Reply Last reply Reply Quote 0
            • Z
              Zachariel @rbaker
              last edited by Zachariel 1 Aug 2018, 12:39 8 Jan 2018, 12:38

              @rbaker I've probably tried fifty different combinations by now, and each time I go back to the default, which is what it is right now. There's no way I can list, or remember, every single thing I tried, and I've even tried just safe HDMI.

              @mitu Normals all well and good, but no tech I've ever owned has worked like "normal". I have tried it on a TV with the same cable and it works fine. The overscan needed to be adjusted but at least I had a picture. It's just on this monitor that it will not work, and the monitor knows something is connected because it isn't showing the "no signal, power save" message.

              M R 2 Replies Last reply 8 Jan 2018, 12:43 Reply Quote 0
              • M
                mitu Global Moderator @Zachariel
                last edited by mitu 1 Aug 2018, 12:44 8 Jan 2018, 12:43

                @zachariel Ok, so it's not the cable. Use a keyboard and play with thetvservice utility to find out the optimal settings for the display to use in the config.txt file.

                • https://elinux.org/RPi_Configuration#Which_values_are_valid_for_my_monitor.3F
                • https://www.opentechguides.com/how-to/article/raspberry-pi/28/raspi-display-setting.html
                Z 1 Reply Last reply 8 Jan 2018, 13:10 Reply Quote 0
                • Z
                  Zachariel @mitu
                  last edited by 8 Jan 2018, 13:10

                  @mitu Yes, I've SSHed into it and tried that. The edid comes back with CEA mode 16 prefered, which is what it sets itself to when there's no changes to the config file (it doesn't work). I found a forum post by someone who had a similar monitor to mine (u3011), and they were having "no signal" issues when using an HDMI to DVI. They said the fix they finally found was to set it to group 2, mode 69, which worked perfectly for them. Even though it was a slightly different model, and he was using HDMI to DVI instead of HDMI to HDMI, I tried it anyway and that was also a no go. The extended edid data has listed group 2, mode 69 in standard timing 2. Might I also need to write in a line to change to that timing? I had assumed the timing was part of the mode.

                  1 Reply Last reply Reply Quote 0
                  • R
                    rbaker @Zachariel
                    last edited by 8 Jan 2018, 15:51

                    @zachariel said in Raspberry Pi 3 B Black Screen on Dell Monitor:

                    I've probably tried fifty different combinations by now

                    Just wanted to check your syntax.

                    Z 1 Reply Last reply 9 Jan 2018, 06:45 Reply Quote 0
                    • Z
                      Zachariel @rbaker
                      last edited by 9 Jan 2018, 06:45

                      @rbaker I get it, but I merely used the commented code they provide for you, I'm fairly confident I didn't screw it up.

                      I really appreciate everyone attempting to help, so if anyone else has any knowledge, information, or thoughts on the matter, that would be wonderful. It's amazing, whenever I have a problem with something, I'm always the only one with that same problem! :-D

                      1 Reply Last reply Reply Quote 0
                      • S
                        Salaman64
                        last edited by 9 Jan 2018, 08:32

                        Hi, I had issues too with my PC monitor, in the end and after lots of trial and error this is my config file. Please be aware that there are probably unnecassary lines in there, but it worked so I didn't want to mess around with it anymore. Some of it was cut and pasted from various sources as I made more progress each day and discovered new discussion threads about it.

                        My monitor has no HDMI support, so I have an DVI adaptor. And 3.5 mm plug for my speaker sound

                        hdmi_force_unplug=1
                        config_hdmi_boost=4

                        hdmi_force_edid_audio=1
                        hdmi_drive=1
                        hdmi_group=2
                        hdmi_mode=35
                        gpu_mem=256
                        gpu_mem_256=128
                        gpu_mem_512=256
                        gpu_mem_1024=256
                        overscan_scale=1

                        dtparam=audio=on
                        disable_audio_dither=1

                        audio_pwm_mode=2

                        P 1 Reply Last reply 24 Sept 2019, 02:08 Reply Quote 0
                        • Z
                          Zachariel
                          last edited by 9 Jan 2018, 10:01

                          Folks, I seem to have finagled it into working. Thanks for the support!

                          M A 2 Replies Last reply 9 Jan 2018, 10:03 Reply Quote 0
                          • M
                            mitu Global Moderator @Zachariel
                            last edited by 9 Jan 2018, 10:03

                            @zachariel Great ! Can you post the solution, so future users will find it when searching the forums ?

                            A 1 Reply Last reply 28 Dec 2018, 17:04 Reply Quote 1
                            • A
                              av999 @Zachariel
                              last edited by 15 Dec 2018, 21:54

                              @Zachariel
                              Hi, i wonder if you can help me. I am having exactly the same issue with my monitor dell1905fp. Can you tell me how did you sorted out? I have try everything, still not signal. Thanks in advance

                              1 Reply Last reply Reply Quote 0
                              • A
                                av999 @mitu
                                last edited by 28 Dec 2018, 17:04

                                @mitu hi, any ideas how to solve the dell monitor black screen problem posted here? I have tried all options but can't get it to work. Thanks

                                M R 2 Replies Last reply 28 Dec 2018, 17:38 Reply Quote -1
                                • M
                                  mitu Global Moderator @av999
                                  last edited by 28 Dec 2018, 17:38

                                  @av999 You already have a topic opened - why barging in on another one ?

                                  1 Reply Last reply Reply Quote 0
                                  • R
                                    raohmaru @av999
                                    last edited by 6 Jan 2019, 10:08

                                    @av999
                                    I had a similar issue with a Philips monitor. I solved it by commenting the following line in /boot/config.txt:

                                    # uncomment if hdmi display is not detected and composite is being output
                                    #hdmi_force_hotplug=1

                                    1 Reply Last reply Reply Quote 0
                                    • N
                                      nasonjo
                                      last edited by 10 Jan 2019, 01:41

                                      @Zachariel did you ever post the solution? I would like to try it... having the same issue

                                      1 Reply Last reply Reply Quote 0
                                      • P
                                        pitaru @Salaman64
                                        last edited by 24 Sept 2019, 02:08

                                        @Salaman64 thank you, the solution you posted worked for my samsung monitor with no HDMI input.

                                        1 Reply Last reply Reply Quote 0
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