Nvidia Quadro P400 not working on Ubuntu server via GPU/PCIe passthrough

[Pyroteq]

@TheFrisianClause I ended up selling my P400 and buying a P2000 which worked straight away. It's possible the P400 may work in future but I didn't want to wait until then.

Unfortunate waste of money, but I'm pretty happy with the setup now running 2 XCP-NG hosts now with Plex with the P2000 doing transcoding, game servers and other utilities.

[TheFrisianClause]

@Pyroteq Currently I am running my plex server via TrueNAS scale with HW transcoding. So I don't need it with XCP-NG anymore... But for the people who do need it, this can be useful to them.

[alexredston]

@olivierlambert Hi Olivier, I'm getting exactly the same issue -

Real server: DL380p Gen8 with Nvidia Tesla K80

 cat /proc/driver/nvidia/gpus/*/information
Model:           Tesla K80
IRQ:             93
GPU UUID:        GPU-????????-????-????-????-????????????
Video BIOS:      ??.??.??.??.??
Bus Type:        PCIe
DMA Size:        40 bits
DMA Mask:        0xffffffffff
Bus Location:    0000:00:05.0
Device Minor:    0
GPU Excluded:    No


Jun 08 11:53:48 gpu-1 nvidia-persistenced[1499]: Started (1499)
Jun 08 11:53:49 gpu-1 kernel: resource sanity check: requesting [mem 0xf3700000-0xf46fffff], which spans more than 0000:00:05.0 [mem 0xf3000000-0xf3ffffff]
Jun 08 11:53:49 gpu-1 kernel: caller _nv033206rm+0x39/0xb0 [nvidia] mapping multiple BARs
Jun 08 11:53:49 gpu-1 kernel: NVRM: GPU 0000:00:05.0: RmInitAdapter failed! (0x24:0xffff:1211)
Jun 08 11:53:49 gpu-1 kernel: NVRM: GPU 0000:00:05.0: rm_init_adapter failed, device minor number 0
Jun 08 11:53:49 gpu-1 kernel: resource sanity check: requesting [mem 0xf3700000-0xf46fffff], which spans more than 0000:00:05.0 [mem 0xf3000000-0xf3ffffff]
Jun 08 11:53:49 gpu-1 kernel: caller _nv033206rm+0x39/0xb0 [nvidia] mapping multiple BARs
Jun 08 11:53:49 gpu-1 kernel: NVRM: GPU 0000:00:05.0: RmInitAdapter failed! (0x24:0xffff:1211)
Jun 08 11:53:49 gpu-1 kernel: NVRM: GPU 0000:00:05.0: rm_init_adapter failed, device minor number 0
Jun 08 11:53:49 gpu-1 nvidia-persistenced[1499]: device 0000:00:05.0 - failed to open.

[alexredston]

Fixed it!

Hidden bios menu Ctril-A on the DL380 seems to have sorted it. Then enabled PCI Express 64Bit BAR Support

(Playing with building a gpu enabled kubernetes cluster on XCP-NG.)

[olivierlambert]

Yaaay!!! Nice catch!

[bajtec]

I'm having similar issue with A400 on xcp-ng8.3

Proprietary driver fails with following message when running nvidia-smi :

NVRM: GPU 0000:00:05.0: RmInitAdapter failed! (0x24:0x72:1568)
[ 44.619030] NVRM: GPU 0000:00:05.0: rm_init_adapter failed, device minor number 0
[ 45.095040] nvidia_uvm: module uses symbols nvUvmInterfaceDisableAccessCntr from proprietary module nvidia, inheriting taint.
[ 45.144703] nvidia-uvm: Loaded the UVM driver, major device number 241.

system is actually loading the driver :

[ 6.026970] xen: --> pirq=88 -> irq=36 (gsi=36)
[ 6.027485] nvidia 0000:00:05.0: vgaarb: changed VGA decodes: olddecodes=io+mem,decodes=none:owns=io+mem
[ 6.029010] NVRM: loading NVIDIA UNIX x86_64 Kernel Module 550.144.03 Mon Dec 30 17:44:08 UTC 2024
[ 6.063945] nvidia-modeset: Loading NVIDIA Kernel Mode Setting Driver for UNIX platforms 550.144.03 Mon Dec 30 17:10:10 UTC 2024
[ 6.118261] [drm] [nvidia-drm] [GPU ID 0x00000005] Loading driver
[ 6.118265] [drm] Initialized nvidia-drm 0.0.0 20160202 for 0000:00:05.0 on minor 1

xl pci-assignable-list gives :

0000:43:00.0
0000:43:00.1

and gpu is assigned as passthrough,, but when listing test VM i have empty list of devices..
[23:06 epycrep ~]# xl pci-list Avideo-nvidia
[23:35 epycrep ~]#

Not sure if i want to try more before switching gpu to something else. Any hint where to look for ?

Server is gigabyte g292-z20 wih epyc 7402p and single gpu for testing. IOMMU enabled.