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    xcp-ng 8.3 not recognizing all host memory

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    • S Offline
      Shrubbery
      last edited by

      I'm running xcp-ng on a Beelink EQR6 with a AMD Ryzen 5 6600H and 16GB ram. xcp-ng xsconsole (and XO) is only showing 12 GiB of Ram. Anyone have any ideas what is causing the reduction of ram?

      Thx

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      • olivierlambertO Offline
        olivierlambert Vates 🪐 Co-Founder CEO
        last edited by

        Hi,

        I suppose because you are maybe checking the RAM available to the Dom0, which is a VM, not the entire host? Can you provide a screenshot of the host view?

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        • S Offline
          Shrubbery @olivierlambert
          last edited by

          @olivierlambert Thanks for the response.

          Here are two screen shots, from the vsconsole of the host and from the XO host page. The XO page shows XCP-ng using 1.59 GiB (I assume that is Dom0 usage). With no VMs running, the host is using 2.2GiB of 12GiB. I confirmed that both 8 GB sticks of ram were seated properly.

          vsconsole
          Screenshot 2025-01-16 at 6.13.13 AM.png

          XO host page
          Screenshot 2025-01-16 at 6.19.53 AM.png

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          • D Offline
            DustinB @Shrubbery
            last edited by

            @Shrubbery If you check BIOS do you see the full 16GB of ram, and does this box have a built in memtest that you can validate that the memory isn't faulty?

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            • S Offline
              Shrubbery @DustinB
              last edited by

              @DustinB Thanks Dustin. I should have checked that already, but didn't even think about it... I'lll check it out when I get home this evening.

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              • olivierlambertO Offline
                olivierlambert Vates 🪐 Co-Founder CEO
                last edited by

                Indeed, @DustinB is right. In the meantime, you can show us the result of xl dmesg and dmesg.

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                • S Offline
                  Shrubbery @olivierlambert
                  last edited by

                  @olivierlambert Thanks for the help. I was able to check the bios at lunch and it is showing 16GB, but it did not have a memtest that I could find. I plan to run memtest86 this evening.

                  xl dmesg
                  xcp-ng_xl_dmesg.txt

                  dmesg
                  xcp-ng_dmesg.txt

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                  • olivierlambertO Offline
                    olivierlambert Vates 🪐 Co-Founder CEO
                    last edited by

                    So Xen can only see 12GiB RAM:

                    (XEN) [0000000d42938c09] System RAM: 12067MB (12357076kB)

                    I would double check BIOS settings, maybe 4GiB RAM reserved for video?

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                    • S Offline
                      Shrubbery @olivierlambert
                      last edited by

                      @olivierlambert & @DustinB The issue was memory reserved for the integrated graphics card. I'm going to reduce the reserved memory to make more available for VMs and play around with it until I find the sweet spot. Thank you both for the help troubleshooting.

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                      • D Offline
                        DustinB @Shrubbery
                        last edited by

                        @Shrubbery said in xcp-ng 8.3 not recognizing all host memory:

                        The issue was memory reserved for the integrated graphics card

                        haha.. that is such a silly thing... but good to know then next time I'm working on some hardware and wondering where the RAM is going too...

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