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    Remote desktop on Gnome hangs randomly

    Scheduled Pinned Locked Moved Hardware
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    • O Offline
      ovicz
      last edited by

      Hello. I'm running a Rocky Linux 10 vm on xcp-ng latest version with gpu passthrough enabled. The host is a TOPTON mini-pc with intel Alder Lake N100 processor.

      The problem is that at random times the RDP session freezes and to make it work again I have to restart the vm. The VM is running with no issues when this occurs but only the gui is not working. If I run with software rendering there are no problems at all, but that's not ideal.

      The passthrough drivers are loaded correctly but something is not right.

      lspci
      00:00.0 Host bridge: Intel Corporation 440FX - 82441FX PMC [Natoma] (rev 02)
      00:01.0 ISA bridge: Intel Corporation 82371SB PIIX3 ISA [Natoma/Triton II]
      00:01.1 IDE interface: Intel Corporation 82371SB PIIX3 IDE [Natoma/Triton II]
      00:01.2 USB controller: Intel Corporation 82371SB PIIX3 USB [Natoma/Triton II] (rev 01)
      00:01.3 Bridge: Intel Corporation 82371AB/EB/MB PIIX4 ACPI (rev 03)
      00:02.0 VGA compatible controller: Device 1234:1111 (rev 02)
      00:03.0 Unassigned class [ff80]: XenSource, Inc. Xen Platform Device (rev 01)
      00:08.0 Audio device: Intel Corporation Alder Lake-N PCH High Definition Audio Controller
      00:09.0 VGA compatible controller: Intel Corporation Alder Lake-N [UHD Graphics]

      lsmod | grep i915
      i915 4677632 28
      cec 69632 2 xe,i915
      intel_gtt 24576 1 i915
      drm_buddy 28672 2 xe,i915
      i2c_algo_bit 20480 2 xe,i915
      drm_display_helper 286720 2 xe,i915
      video 81920 2 xe,i915
      ttm 110592 4 drm_vram_helper,drm_ttm_helper,xe,i915

      I've tried even with a newer distro as Debian Testing but it's the same result.

      1 Reply Last reply Reply Quote 0
      • O Offline
        ovicz
        last edited by

        If I pass the option GRUB_CMDLINE_LINUX_DEFAULT="i915.enable_guc=0 quiet" the gui doesn't freeze totally but still lags.

        P 1 Reply Last reply Reply Quote 0
        • P Offline
          ph7 @ovicz
          last edited by

          @ovicz
          Perhaps upgrade bios ???

          1 Reply Last reply Reply Quote 0
          • O Offline
            ovicz
            last edited by

            I'm afraid there aren't any bios updates...the device is a chinese mini pc from aliexpress. I've spoken with the seller and he told there aren't any, at least not official ones. I don't think it's a bios issue, but something regarding the passthrough on the newer devices . maybe the kernel from xcp is too old, although it's heavily patched.

            1 Reply Last reply Reply Quote 0
            • O Offline
              ovicz
              last edited by

              Setting pci=nomsi seems to do the trick for now. Probably not optimal but it's just a VM and I didn't notice any performance issues.

              1 Reply Last reply Reply Quote 1
              • olivierlambertO Offline
                olivierlambert Vates 🪐 Co-Founder CEO
                last edited by

                Adding @Team-OS-Platform-Release in case that rings a bell

                yannY 1 Reply Last reply Reply Quote 0
                • yannY Offline
                  yann Vates 🪐 XCP-ng Team @olivierlambert
                  last edited by

                  Since GPU passthrough is involved I'd ping @Team-Hypervisor-Kernel

                  1 Reply Last reply Reply Quote 1

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