Ok, took a better look, (I was doing a wrong grep last time , sorry)
The card is there [10de:2520] and VGA arbiter sees it
Mar 03 16:31:51 kernel: pci 0000:01:00.0: [10de:2520] type 00 class 0x030000
Mar 03 16:31:51 kernel: pci 0000:01:00.0: reg 0x10: [mem 0x54000000-0x54ffffff]
Mar 03 16:31:51 kernel: pci 0000:01:00.0: reg 0x14: [mem 0x6000000000-0x61ffffffff 64bit pref]
Mar 03 16:31:51 kernel: pci 0000:01:00.0: reg 0x1c: [mem 0x6200000000-0x6201ffffff 64bit pref]
Mar 03 16:31:51 kernel: pci 0000:01:00.0: reg 0x24: [io 0x4000-0x407f]
Mar 03 16:31:51 kernel: pci 0000:01:00.0: reg 0x30: [mem 0x55000000-0x5507ffff pref]
Mar 03 16:31:51 kernel: pci 0000:01:00.0: PME# supported from D0 D3hot
Mar 03 16:31:51 kernel: pci 0000:01:00.0: 126.024 Gb/s available PCIe bandwidth, limited by 16.0 GT/s PCIe x8 link at 0000:00:01.0 (capable of 252.048 Gb/s with 16.0 GT/s PCIe x16 link)
Mar 03 16:31:51 kernel: pci 0000:01:00.0: vgaarb: bridge control possible
Mar 03 16:31:51 kernel: pci 0000:01:00.0: vgaarb: VGA device added: decodes=io+mem,owns=none,locks=none
But nothing after that, no kernel module is loading, nothing more nvidia related.
(PCI express bandwith for the card is halved too, but that could be some weird HP bios or PCIe lane issue, not important currently)
And then I’ve noticed that you are using a real-time kernel. That could be the issue, you will need nvidia drivers for linux-rt
Can you boot off of the live installation media and send the output of
inxi -Fxxc0z | eos-sendlog
again?