Pyroteq

Pyroteq

Try the CLI method and see if that fixes it.

Those settings in XOA exist for vGPUs I believe, not for pass through.

Pyroteq

09:00.0 "Multimedia video controller [0400]" "Conexant Systems, Inc. [14f1]" "CX23887/8 PCIe Broadcast Audio and Video Decoder with 3D Comb [8880]" -r04 "Hauppauge computer works Inc. [0070]" "Device [6a28]"

0a:00.0 "Multimedia video controller [0400]" "Conexant Systems, Inc. [14f1]" "CX23887/8 PCIe Broadcast Audio and Video Decoder with 3D Comb [8880]" -r04 "Hauppauge computer works Inc. [0070]" "Device [6b28]"

Pyroteq

@andriy.sultanov

09:00.0 "Multimedia video controller [0400]" "Conexant Systems, Inc. [14f1]" "CX23887/8 PCIe Broadcast Audio and Video Decoder with 3D Comb [8880]" -r04 "Hauppauge computer works Inc. [0070]" "Device [6a28]"

0a:00.0 "Multimedia video controller [0400]" "Conexant Systems, Inc. [14f1]" "CX23887/8 PCIe Broadcast Audio and Video Decoder with 3D Comb [8880]" -r04 "Hauppauge computer works Inc. [0070]" "Device [6b28]"

Pyroteq

@olivierlambert

My issue isn't that I can't pass through the card at all, I can still do it via CLI just fine so there isn't really any real problem preventing me from hiding the card from dom0 and then attaching it to my Plex VM. I was just curious why some devices are listed with xe pci-list and others aren't because I would have thought that it would essentially just reflect whatever shows in lspci.

Having it show in xe pci-list would just mean it's easier to attach/detach from a VM as it would then show in the webUI.

Does XCP-NG require the built in driver support to list the devices in pci-list?? Because the TV tuner doesn't work natively on Linux without downloading the drivers so I guess that could be a possibility?

Pyroteq

@olivierlambert

Correct. The webUI seems to reflect whatever is in xe pci-list, but what appears in this list seems somewhat random when compared to the full lspci list.

Perhaps xe pci-list could be made to be a bit more broad in what it can detect?

Pyroteq

I have a TV tuner card I use with my Plex Media Server.

I've successfully used the command line to pass this device through to the VM and it works fine, but recently I upgraded to XCP-NG 8.3 and saw that there is now new options in XO to make pass through much easier so I figured I'd give it a try.

Unfortunately it appears that not all PCI devices are listed including my TV Tuner card.

Is there a reason some devices are detected and others aren't?

lspci
00:00.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Renoir/Cezanne Root Complex
00:00.2 IOMMU: Advanced Micro Devices, Inc. [AMD] Renoir/Cezanne IOMMU
00:01.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Renoir PCIe Dummy Host Bridge
00:01.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Renoir PCIe GPP Bridge
00:01.2 PCI bridge: Advanced Micro Devices, Inc. [AMD] Renoir/Cezanne PCIe GPP Bridge
00:02.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Renoir PCIe Dummy Host Bridge
00:02.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Renoir/Cezanne PCIe GPP Bridge
00:08.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Renoir PCIe Dummy Host Bridge
00:08.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Renoir Internal PCIe GPP Bridge to Bus
00:08.2 PCI bridge: Advanced Micro Devices, Inc. [AMD] Renoir Internal PCIe GPP Bridge to Bus
00:14.0 SMBus: Advanced Micro Devices, Inc. [AMD] FCH SMBus Controller (rev 51)
00:14.3 ISA bridge: Advanced Micro Devices, Inc. [AMD] FCH LPC Bridge (rev 51)
00:18.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Cezanne Data Fabric; Function 0
00:18.1 Host bridge: Advanced Micro Devices, Inc. [AMD] Cezanne Data Fabric; Function 1
00:18.2 Host bridge: Advanced Micro Devices, Inc. [AMD] Cezanne Data Fabric; Function 2
00:18.3 Host bridge: Advanced Micro Devices, Inc. [AMD] Cezanne Data Fabric; Function 3
00:18.4 Host bridge: Advanced Micro Devices, Inc. [AMD] Cezanne Data Fabric; Function 4
00:18.5 Host bridge: Advanced Micro Devices, Inc. [AMD] Cezanne Data Fabric; Function 5
00:18.6 Host bridge: Advanced Micro Devices, Inc. [AMD] Cezanne Data Fabric; Function 6
00:18.7 Host bridge: Advanced Micro Devices, Inc. [AMD] Cezanne Data Fabric; Function 7
01:00.0 VGA compatible controller: NVIDIA Corporation GP106 [GeForce GTX 1060 6GB] (rev a1)
01:00.1 Audio device: NVIDIA Corporation GP106 High Definition Audio Controller (rev a1)
02:00.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Matisse Switch Upstream
03:01.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Matisse PCIe GPP Bridge
03:02.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Matisse PCIe GPP Bridge
03:04.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Matisse PCIe GPP Bridge
03:05.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Matisse PCIe GPP Bridge
03:06.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Matisse PCIe GPP Bridge
03:08.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Matisse PCIe GPP Bridge
03:09.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Matisse PCIe GPP Bridge
03:0a.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Matisse PCIe GPP Bridge
04:00.0 Ethernet controller: Mellanox Technologies MT27500 Family [ConnectX-3]
05:00.0 VGA compatible controller: NVIDIA Corporation GP106GL [Quadro P2000] (rev a1)
05:00.1 Audio device: NVIDIA Corporation GP106 High Definition Audio Controller (rev a1)
06:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8211/8411 PCI Express Gigabit Ethernet Controller (rev 16)
07:00.0 PCI bridge: Pericom Semiconductor PI7C9X2G304 EL/SL PCIe2 3-Port/4-Lane Packet Switch (rev 05)
08:01.0 PCI bridge: Pericom Semiconductor PI7C9X2G304 EL/SL PCIe2 3-Port/4-Lane Packet Switch (rev 05)
08:02.0 PCI bridge: Pericom Semiconductor PI7C9X2G304 EL/SL PCIe2 3-Port/4-Lane Packet Switch (rev 05)
09:00.0 Multimedia video controller: Conexant Systems, Inc. CX23887/8 PCIe Broadcast Audio and Video Decoder with 3D Comb (rev 04)
0a:00.0 Multimedia video controller: Conexant Systems, Inc. CX23887/8 PCIe Broadcast Audio and Video Decoder with 3D Comb (rev 04)
0b:00.0 Serial controller: MosChip Semiconductor Technology Ltd. PCIe 9912 Multi-I/O Controller
0b:00.1 Serial controller: MosChip Semiconductor Technology Ltd. PCIe 9912 Multi-I/O Controller
0b:00.2 Parallel controller: MosChip Semiconductor Technology Ltd. PCIe 9912 Multi-I/O Controller
0c:00.0 Non-Essential Instrumentation [1300]: Advanced Micro Devices, Inc. [AMD] Starship/Matisse Reserved SPP
0c:00.1 USB controller: Advanced Micro Devices, Inc. [AMD] Matisse USB 3.0 Host Controller
0c:00.3 USB controller: Advanced Micro Devices, Inc. [AMD] Matisse USB 3.0 Host Controller
0d:00.0 SATA controller: Advanced Micro Devices, Inc. [AMD] FCH SATA Controller [AHCI mode] (rev 51)
0e:00.0 SATA controller: Advanced Micro Devices, Inc. [AMD] FCH SATA Controller [AHCI mode] (rev 51)
0f:00.0 Non-Volatile memory controller: Kingston Technology Company, Inc. FURY Renegade NVMe SSD with heatsink (rev 01)
10:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Cezanne [Radeon Vega Series / Radeon Vega Mobile Series] (rev c8)
10:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Renoir Radeon High Definition Audio Controller
10:00.2 Encryption controller: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 10h-1fh) Platform Security Processor
10:00.3 USB controller: Advanced Micro Devices, Inc. [AMD] Renoir/Cezanne USB 3.1
10:00.4 USB controller: Advanced Micro Devices, Inc. [AMD] Renoir/Cezanne USB 3.1
10:00.6 Audio device: Advanced Micro Devices, Inc. [AMD] Family 17h/19h HD Audio Controller
11:00.0 SATA controller: Advanced Micro Devices, Inc. [AMD] FCH SATA Controller [AHCI mode] (rev 81)
11:00.1 SATA controller: Advanced Micro Devices, Inc. [AMD] FCH SATA Controller [AHCI mode] (rev 81

xe pci-list
uuid ( RO)           : bcc76d1d-c85d-67c1-dfc4-83ece0267ade
    vendor-name ( RO): Realtek Semiconductor Co., Ltd.
    device-name ( RO): RTL8111/8168/8211/8411 PCI Express Gigabit Ethernet Controller
         pci-id ( RO): 0000:06:00.0


uuid ( RO)           : 29611fb5-e276-5de1-6cf1-6e1ecdcac271
    vendor-name ( RO): Advanced Micro Devices, Inc. [AMD/ATI]
    device-name ( RO): Cezanne [Radeon Vega Series / Radeon Vega Mobile Series]
         pci-id ( RO): 0000:10:00.0


uuid ( RO)           : c0c7d8d9-ae57-7ccd-ee29-d6e6a999d86d
    vendor-name ( RO): Advanced Micro Devices, Inc. [AMD]
    device-name ( RO): FCH SATA Controller [AHCI mode]
         pci-id ( RO): 0000:11:00.1


uuid ( RO)           : a90f2a27-f722-2371-9757-d920f20e2c8c
    vendor-name ( RO): Advanced Micro Devices, Inc. [AMD]
    device-name ( RO): FCH SATA Controller [AHCI mode]
         pci-id ( RO): 0000:11:00.0


uuid ( RO)           : 316e2f1f-4684-76da-36d6-fe9d92a629ff
    vendor-name ( RO): NVIDIA Corporation
    device-name ( RO): GP106GL [Quadro P2000]
         pci-id ( RO): 0000:05:00.0


uuid ( RO)           : a96bf51a-9ab2-b1d3-1f9b-6861057ad6e9
    vendor-name ( RO): NVIDIA Corporation
    device-name ( RO): GP106 High Definition Audio Controller
         pci-id ( RO): 0000:01:00.1


uuid ( RO)           : b21b6fcf-14d2-6dfc-6bd0-930e55533c29
    vendor-name ( RO): Advanced Micro Devices, Inc. [AMD]
    device-name ( RO): Family 17h/19h HD Audio Controller
         pci-id ( RO): 0000:10:00.6


uuid ( RO)           : 839b273a-6a05-bf48-ffd4-7f9f5abf14ae
    vendor-name ( RO): NVIDIA Corporation
    device-name ( RO): GP106 High Definition Audio Controller
         pci-id ( RO): 0000:05:00.1


uuid ( RO)           : b7823f9f-f222-fe1c-f7ef-0706e9b220fd
    vendor-name ( RO): NVIDIA Corporation
    device-name ( RO): GP106 [GeForce GTX 1060 6GB]
         pci-id ( RO): 0000:01:00.0


uuid ( RO)           : 7d357a0c-65b8-0289-e066-d7406bce1bef
    vendor-name ( RO): Advanced Micro Devices, Inc. [AMD]
    device-name ( RO): Family 17h (Models 10h-1fh) Platform Security Processor
         pci-id ( RO): 0000:10:00.2


uuid ( RO)           : 100a234c-3a8d-9633-9c8b-6a8b477caa99
    vendor-name ( RO): Kingston Technology Company, Inc.
    device-name ( RO): FURY Renegade NVMe SSD with heatsink
         pci-id ( RO): 0000:0f:00.0


uuid ( RO)           : 134b5187-9de7-da61-f2b0-0041c08b1c27
    vendor-name ( RO): Advanced Micro Devices, Inc. [AMD]
    device-name ( RO): Renoir/Cezanne USB 3.1
         pci-id ( RO): 0000:10:00.3


uuid ( RO)           : b41fd3a4-1494-3f73-ed50-74493289e01d
    vendor-name ( RO): Advanced Micro Devices, Inc. [AMD]
    device-name ( RO): FCH SATA Controller [AHCI mode]
         pci-id ( RO): 0000:0e:00.0


uuid ( RO)           : bd91ee24-da09-aaef-51ec-a3c4c89ea72d
    vendor-name ( RO): Advanced Micro Devices, Inc. [AMD]
    device-name ( RO): FCH SATA Controller [AHCI mode]
         pci-id ( RO): 0000:0d:00.0


uuid ( RO)           : 9df35a8c-1343-4353-9799-906a2c015479
    vendor-name ( RO): Advanced Micro Devices, Inc. [AMD]
    device-name ( RO): Renoir/Cezanne USB 3.1
         pci-id ( RO): 0000:10:00.4


uuid ( RO)           : 823820df-a14c-ae47-37f2-7cb133496c02
    vendor-name ( RO): Mellanox Technologies
    device-name ( RO): MT27500 Family [ConnectX-3]
         pci-id ( RO): 0000:04:00.0


uuid ( RO)           : 655f0cf1-1b7a-63e2-5404-7860795ca712
    vendor-name ( RO): Advanced Micro Devices, Inc. [AMD/ATI]
    device-name ( RO): Renoir Radeon High Definition Audio Controller
         pci-id ( RO): 0000:10:00.1

This is the device in question:

09:00.0 Multimedia video controller: Conexant Systems, Inc. CX23887/8 PCIe Broadcast Audio and Video Decoder with 3D Comb (rev 04)
0a:00.0 Multimedia video controller: Conexant Systems, Inc. CX23887/8 PCIe Broadcast Audio and Video Decoder with 3D Comb (rev 04)

Pyroteq

I have managed to get a serial connection to the second machine with the following grub.cfg configuration.

serial --unit=4 --port=0xb030 --speed=115200
terminal_input serial console
terminal_output serial console
set default=0
set timeout=5
if [ -s $prefix/grubenv ]; then
        load_env
fi

if [ -n "$override_entry" ]; then
        set default=$override_entry
fi

menuentry 'XCP-ng' {
        search --label --set root root-fsidtl
        multiboot2 /boot/xen.gz dom0_mem=4272M,max:4272M watchdog ucode=scan dom0_max_vcpus=1-16 crashkernel=256M,below=4G console=com5,115200 console=com5,vga vga=mode-0x0311
        module2 /boot/vmlinuz-4.19-xen root=LABEL=root-fsidtl ro nolvm hpet=disable console=hvc0 console=ttyS4,115200 console=tty0 quiet vga=785 splash plymouth.ignore-serial-consoles xen-pciback.hide=(0000:01:00.0)(0000:01:00.1)(0000:0a:00.0)(0000:09:00.0) pci=realloc=on
        module2 /boot/initrd-4.19-xen.img
}

I believe the trick was adding console=ttyS4,115200

Unfortunately, I still don't get the grub boot selection to screen to show on reboot like it does on the first machine.

Can anyone explain why?

I had already tried changing COM1 to COM5 in the multiboot line. Having access to the boot loader could be useful if I ever had issues booting and needed to access the grub command line. Also tried changing COM5 to ttyS4 as well. Is there a specific serial= command I should use instead there?

Pyroteq

G'day, can someone please help me before I go insane. I had already typed out a post and then when I went to post it asked me to confirm my email (despite posting before) which made me lose everything I typed which has made this even more frustrating after spending hours trying to get this working...

Ok, so I have 2 hypevisors.

I've managed to get serial connection working on it very easily in just a few minutes.

Machine 1

dmesg | grep tty
[    0.000000] Command line: root=LABEL=root-pjvhsg ro nolvm hpet=disable console=hvc0 console=tty0 quiet vga=785 splash plymouth.ignore-serial-consoles xen-pciback.hide=(0000:21:00.0)
[    0.436953] Kernel command line: root=LABEL=root-pjvhsg ro nolvm hpet=disable console=hvc0 console=tty0 quiet vga=785 splash plymouth.ignore-serial-consoles xen-pciback.hide=(0000:21:00.0)
[    0.491878] console [tty0] enabled

All I needed to do was edit the grub.cfg file, reboot and it showed up straight away on my laptop connected via serial hub.

cat /boot/efi/EFI/xenserver/grub.cfg
serial --unit=0 --speed=115200
terminal_input serial console
terminal_output serial console
set default=0
set timeout=5
if [ -s $prefix/grubenv ]; then
        load_env
fi

if [ -n "$override_entry" ]; then
        set default=$override_entry
fi

menuentry 'XCP-ng' {
        search --label --set root root-pjvhsg
        multiboot2 /boot/xen.gz dom0_mem=4096M,max:4096M watchdog ucode=scan dom0_max_vcpus=1-16 crashkernel=256M,below=4G com1=115200,8n1 console=com1,vga vga=mode-0x0311
        module2 /boot/vmlinuz-4.19-xen root=LABEL=root-pjvhsg ro nolvm hpet=disable console=hvc0 console=tty0 quiet vga=785 splash plymouth.ignore-serial-consoles xen-pciback.hide=(0000:21:00.0)
        module2 /boot/initrd-4.19-xen.img
}

Machine 2

This one is a bit different as it doesn't have any serial headers on the motherboard so I've bought a PCIe serial/parallel card.

lspci -v | grep -A 14 'Serial\|Parallel'
0b:00.0 Serial controller: MosChip Semiconductor Technology Ltd. PCIe 9912 Multi-I/O Controller (prog-if 02 [16550])
        Subsystem: Asix Electronics Corporation (Wrong ID) Device 1000
        Flags: fast devsel, IRQ 30
        I/O ports at b030 [size=8]
        Memory at 91f00000 (32-bit, non-prefetchable) [size=4K]
        Memory at 91f01000 (32-bit, non-prefetchable) [size=4K]
        Capabilities: [50] MSI: Enable- Count=1/8 Maskable- 64bit+
        Capabilities: [78] Power Management version 3
        Capabilities: [80] Express Legacy Endpoint, MSI 00
        Capabilities: [100] Virtual Channel
        Capabilities: [800] Advanced Error Reporting
        Kernel driver in use: serial

0b:00.1 Serial controller: MosChip Semiconductor Technology Ltd. PCIe 9912 Multi-I/O Controller (prog-if 02 [16550])
        Subsystem: Asix Electronics Corporation (Wrong ID) Device 1000
        Flags: fast devsel, IRQ 31
        I/O ports at b020 [size=8]
        Memory at 91f02000 (32-bit, non-prefetchable) [size=4K]
        Memory at 91f03000 (32-bit, non-prefetchable) [size=4K]
        Capabilities: [50] MSI: Enable- Count=1/8 Maskable- 64bit+
        Capabilities: [78] Power Management version 3
        Capabilities: [80] Express Legacy Endpoint, MSI 00
        Capabilities: [100] Advanced Error Reporting
        Kernel driver in use: serial

0b:00.2 Parallel controller: MosChip Semiconductor Technology Ltd. PCIe 9912 Multi-I/O Controller (prog-if 03 [IEEE1284])
        Subsystem: Asix Electronics Corporation (Wrong ID) Device 2000
        Flags: fast devsel, IRQ 11
        I/O ports at b010 [disabled] [size=8]
        I/O ports at b000 [disabled] [size=8]
        Memory at 91f04000 (32-bit, non-prefetchable) [disabled] [size=4K]
        Memory at 91f05000 (32-bit, non-prefetchable) [disabled] [size=4K]
        Capabilities: [50] MSI: Enable- Count=1/1 Maskable- 64bit+
        Capabilities: [78] Power Management version 3
        Capabilities: [80] Express Legacy Endpoint, MSI 00
        Capabilities: [100] Advanced Error Reporting

dmesg | grep tty
[    0.000000] Command line: root=LABEL=root-fsidtl ro nolvm hpet=disable console=hvc0 console=tty0 quiet vga=785 splash plymouth.ignore-serial-consoles xen-pciback.hide=(0000:01:00.0)(0000:01:00.1)(0000:0a:00.0)(0000:09:00.0) pci=realloc=on
[    0.770474] Kernel command line: root=LABEL=root-fsidtl ro nolvm hpet=disable console=hvc0 console=tty0 quiet vga=785 splash plymouth.ignore-serial-consoles xen-pciback.hide=(0000:01:00.0)(0000:01:00.1)(0000:0a:00.0)(0000:09:00.0) pci=realloc=on
[    0.837499] console [tty0] enabled
[    6.010629] 0000:0b:00.0: ttyS4 at I/O 0xb030 (irq = 30, base_baud = 115200) is a ST16650V2
[    6.033192] 0000:0b:00.1: ttyS5 at I/O 0xb020 (irq = 31, base_baud = 115200) is a ST16650V2

I've used screen to determine the connection between the serial hub and machine is ok.

screen /dev/ttyS5 115200

I could see text I entered appear in the putty serial connection when I was typing via SSH so it appears the cable is ok, serial hub is ok and PCIe card is ok.

So I made the exact same changes to my grub.cfg (Slight differences in PCI settings as well as the ports used by COM# and ttyS#)

cat /boot/efi/EFI/xenserver/grub.cfg
serial --unit=5 --speed=115200
terminal_input serial console
terminal_output serial console
set default=0
set timeout=5
if [ -s $prefix/grubenv ]; then
        load_env
fi

if [ -n "$override_entry" ]; then
        set default=$override_entry
fi

menuentry 'XCP-ng' {
        search --label --set root root-fsidtl
        multiboot2 /boot/xen.gz dom0_mem=4272M,max:4272M watchdog ucode=scan dom0_max_vcpus=1-16 crashkernel=256M,below=4G com6=115200,8n1 console=com6,vga vga=mode-0x0311
        module2 /boot/vmlinuz-4.19-xen root=LABEL=root-fsidtl ro nolvm hpet=disable console=hvc0 console=tty0 quiet vga=785 splash plymouth.ignore-serial-consoles xen-pciback.hide=(0000:01:00.0)(0000:01:00.1)(0000:0a:00.0)(0000:09:00.0) pci=realloc=on
        module2 /boot/initrd-4.19-xen.img
}

Upon reset putty shows a single weird character as if it was trying to establish a connection or something but then I don't get any sort of output or input.

Please help.

Cheers.

Pyroteq

I was importing a 700GB .VHD created with Microsoft Disk2VHD (Not XVHD).

This is coming from my NAS and only gigabit ethernet (Until more 10gbit cards arrive next week) so it was taking forever. XOA had estimated 21 hours or something. Which was fine, happy to leave it overnight. I left my PC on the tasks page to monitor the progress and left it there.

However at some point when the task was over 5% complete I came back to check the progress and found that the task had just completely disappeared.

I didn't have any sort of notification left on the screen as to what happened or why. If I check in previous tasks I don't see anything. If I check in Pool logs I don't see anything.

I figured maybe the progress bar was inaccurate and the task finished but when I checked too see if the disk was available it's nowhere to be found so it seems the import failed at some point.

Am I missing something? It seems pretty difficult to find the information in XOA and I have no idea what I'd search for in logs or previous tasks. I tried to search for "import" or "nfs" (since that's part of the SR name I was importing it to) but got no results.

Any tips?

EDIT - Pretty sure I understand what happened. Computer went to sleep and lost network connection instead of keeping the session alive. Copying from mapped NAS folder, transferring through XOA on my PC was adding too many jumps so I've just opted to copy the file via command line instead.

Still confused as to why there was no error message or anything under tasks or anything though. It seems as soon as you refresh the page everything disappears.

Pyroteq

@olivierlambert

In the end the solution was so simple... I was up until 2am trying to fix this. Updating the firmware, messing up Grub on my XCP-NG installation and having to recover off an XCP-NG 8.2 backup, hours wasted troubleshooting the Mellanox firmware tools (During installation you have to enter your password multiple times and there's no prompt or anything - No idea how someone discovered that work around).

I saw lots of people mentioning adding pci=realloc=off to kernel boot parameters and I tried that without success.

Just for the lolz I figured what if I turned it on instead?

pci=realloc=on

dmesg | grep UAR

Can no longer see the UAR missing error from before... Seems promising...

lspci -k | grep -A 2 Mellanox
04:00.0 Ethernet controller: Mellanox Technologies MT27500 Family [ConnectX-3]
      Subsystem: Mellanox Technologies Device 0055
      Kernel driver in use: mlx4_core
      Kernel modules: mlx4_core

Kernel driver is in use now, before it wasn't.

Rescan PIF in XOA and I can see it! Shows connected at 10gbit, is able to get IP address via DHCP, etc.

Everything seems to be working...

Now I've just gotta test that all my other PCI-e devices are passing through ok with this option enabled.

Pyroteq

@Anonabhar seems to be an issue with the machine itself.

Tested my gaming rig and my server.

They're both AMD X570 chipsets.

Loaded up Ubuntu 22.04 live USB on each system. On my gaming rig it worked straight away without issue. Connected DAC to switch and it reported a 10gbit connection. On the server it has the same UAR Missing error message in dmesg and didn't show up as a network interface but appeared in lspci just as before.

Either I'm missing a setting hidden away in the BIOS or there's some very weird hardware conflict or incompatibility.

I'm installing Ubuntu to a portal SSD now and then I'll try out the firmware tools and see if I have any luck.

Pyroteq

@Anonabhar

I just edited my post as you posted. I just tried it on Windows 11 and it worked instantly. This particular card doesn't support Infiniband, it's ethernet only so I don't believe that should be relevant in this case. It's the CX311A EN model.

The problem seems to lie in the drivers on XCP-NG or in the firmware of the card.

I'm not sure if I should be upgrading or downgrading the firmware or as some people suggested editing the firmware and limiting some aspects of the card to try and get it working.

I saw some posts about PCI=REALLOC=OFF in Grub from the Red Hat community support page, but wouldn't I want this on for a hypervisor?

Pyroteq

@Pyroteq

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Machine 1

Machine 2