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    Strange issue with booting XCP-NG

    Compute
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    • Danp
      Danp @Guest last edited by

      @appollonius I don't have this issue. Just been following along on this thread and happened to run across the Citrix issue I posted earlier. 😀

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      • ?
        A Former User @Danp last edited by

        @danp Ahh I thought you had the same problem, but I still find it strange and I cannot find anything about it on the interwebs...

        Danp 1 Reply Last reply Reply Quote 0
        • Danp
          Danp @Guest last edited by

          @appollonius Did you read the issue I linked above?

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          • ?
            A Former User @Danp last edited by A Former User

            @danp Yeah though it still does not have any solution... Which is sad 😞

            Danp 1 Reply Last reply Reply Quote 0
            • Danp
              Danp @Guest last edited by

              @appollonius Found the patch where Citrix backported the fix to XS 7.1 -- https://github.com/xenserver/xen.pg/commit/4629bd92f3d3263da9d7fe304df422e54d56ee56

              @r1 @stormi Guessing that they didn't pass this upstream to the Xen folks. 🤷

              0 idruzhinin committed to xenserver/xen.pg
              CA-316240: Fix booting on some platforms without monitor attached
              
              Some platform UEFI firmware doesn't initialize EFI_GRAPHICS_OUTPUT_PROTOCOL
              instance if there is no physically attached display present. So trying
              to use it will result in NULL pointer dereference even before existing
              BootServices.
              
              Signed-off-by: Igor Druzhinin <igor.druzhinin@citrix.com>
              ? R 3 Replies Last reply Reply Quote 0
              • ?
                A Former User @Danp last edited by

                @danp thanks, I might be able to somehow tweak this in the EFI config but not 100% sure. Will check this out asap, otherwise I'll have to leave it to the Xcp-NG team

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                • ?
                  A Former User @Danp last edited by A Former User

                  @danp So I have another question, do you think that when I install XCP-NG in BIOS mode that this issue wont arise?

                  Now I know what the problem might be @stormi could this be an UEFI issue rather than an XCP-NG issue?

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                  • R
                    r1 XCP-ng Team @Danp last edited by

                    @danp said in Strange issue with booting XCP-NG:

                    https://github.com/xenserver/xen.pg/commit/4629bd92f3d3263da9d7fe304df422e54d56ee56

                    This seems present for XCP-ng 8.0 and 8.2..

                    ? 1 Reply Last reply Reply Quote 1
                    • ?
                      A Former User @r1 last edited by

                      @r1 Its still strange though that this problem still persists. As I think there are more people using the Quadro P400.. (Correct me if I'm wrong of course).

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                      • ?
                        A Former User last edited by

                        Do you guys think that this has to do with UEFI? Otherwise I will have to reinstall XCP-NG in BIOS mode instead of UEFI mode...

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                        • R
                          r1 XCP-ng Team @Guest last edited by

                          @appollonius I don't think it is driver issue (POST boot).. We may know more only from serial output.

                          Are you able to boot as-is in BIOS mode without reinstall?

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                          • ?
                            A Former User @r1 last edited by

                            @r1 I could try that, will update when that has been done...

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                            • ?
                              A Former User @r1 last edited by

                              @r1 How do I boot in BIOS mode without a reinstall? Can that even be done, because I remember that when I installed xcp-ng I had to choose between BIOS or UEFI am I correct? (Could be something else though) otherwise if not I can give that a try.

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                              • R
                                r1 XCP-ng Team @Guest last edited by

                                @appollonius I think it will depend on hardware settings. See if you have option to change the mode in motherboard settings?

                                I don't have physical hardware access to validate this as I mostly use nested virtualization but XCP-ng /boot has required files support both for UEFI and BIOS mode.

                                Maybe @stormi can confirm.

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                                • ?
                                  A Former User @r1 last edited by

                                  @r1 If this could be confirmed I would be happy to test it, otherwise I'll have to do it when I have a new system.. Because I dont want to mess up the current one just yet 🙂

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                                  • R
                                    r1 XCP-ng Team @Guest last edited by

                                    @appollonius I don't think there is any harm. You will be either be able to boot or not. You can always switch back to old settings.

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                                    • ?
                                      A Former User @r1 last edited by

                                      @r1 Alright then I will give it a try somewhere today 🙂

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                                      • stormi
                                        stormi XCP-ng Team last edited by

                                        Unless I'm mistaken, XCP-ng installed in UEFI mode won't boot in bios mode. There won't be anything written in the MBR.

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                                        • ?
                                          A Former User @stormi last edited by

                                          @stormi Ahh... So I would have to reinstall XCP-NG completely to be able to boot in BIOS?

                                          stormi 1 Reply Last reply Reply Quote 0
                                          • stormi
                                            stormi XCP-ng Team @Guest last edited by

                                            @appollonius yes

                                            ? 1 Reply Last reply Reply Quote 0
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