Hi everyone,

 

As spelled in the title, my Unraid (UEFI) flash drive can't detect the GPU, and its really weird in the logs.

Before that, my motherboard is set to fully run in UEFI, and peripherals can boot only with EFI. Virtualization and VT-D are active as Interupt Remapping. Decode Above 4G (useless in my case) is active and reverting those parameters doesn't works to help Unraid launch the GPU..

 

At launch, I could detect the GPU as I left the pcie lanes in auto or x16.

After setting by mistake my pcie bifurcation in x4x4x4x4 for my GPU and booting, my graphic card finally showed up!

As we can notice :

 

May 22 20:16:21 rohrer-enard kernel: pci 0000:06:00.0: [10de:1eb1] type 00 class 0x030000
May 22 20:16:21 rohrer-enard kernel: pci 0000:06:00.0: reg 0x10: [mem 0xfa000000-0xfaffffff]
May 22 20:16:21 rohrer-enard kernel: pci 0000:06:00.0: reg 0x14: [mem 0xffe0000000-0xffefffffff 64bit pref]
May 22 20:16:21 rohrer-enard kernel: pci 0000:06:00.0: reg 0x1c: [mem 0xfff0000000-0xfff1ffffff 64bit pref]
May 22 20:16:21 rohrer-enard kernel: pci 0000:06:00.0: reg 0x24: [io  0xe000-0xe07f]
May 22 20:16:21 rohrer-enard kernel: pci 0000:06:00.0: reg 0x30: [mem 0xfb000000-0xfb07ffff pref]
May 22 20:16:21 rohrer-enard kernel: pci 0000:06:00.0: PME# supported from D0 D3hot D3cold
May 22 20:16:21 rohrer-enard kernel: pci 0000:06:00.0: 63.008 Gb/s available PCIe bandwidth, limited by 8.0 GT/s PCIe x8 link at 0000:00:03.0 (capable of 126.016 Gb/s with 8.0 GT/s PCIe x16 link)
May 22 20:16:21 rohrer-enard kernel: pci 0000:06:00.1: [10de:10f8] type 00 class 0x040300
May 22 20:16:21 rohrer-enard kernel: pci 0000:06:00.1: reg 0x10: [mem 0xfb080000-0xfb083fff]
May 22 20:16:21 rohrer-enard kernel: pci 0000:06:00.2: [10de:1ad8] type 00 class 0x0c0330
May 22 20:16:21 rohrer-enard kernel: pci 0000:06:00.2: reg 0x10: [mem 0xfff2000000-0xfff203ffff 64bit pref]
May 22 20:16:21 rohrer-enard kernel: pci 0000:06:00.2: reg 0x1c: [mem 0xfff2040000-0xfff204ffff 64bit pref]
May 22 20:16:21 rohrer-enard kernel: pci 0000:06:00.2: PME# supported from D0 D3hot D3cold
May 22 20:16:21 rohrer-enard kernel: pci 0000:06:00.3: [10de:1ad9] type 00 class 0x0c8000
May 22 20:16:21 rohrer-enard kernel: pci 0000:06:00.3: reg 0x10: [mem 0xfb084000-0xfb084fff]
May 22 20:16:21 rohrer-enard kernel: pci 0000:06:00.3: PME# supported from D0 D3hot D3cold
May 22 20:16:21 rohrer-enard kernel: pci 0000:00:03.0: PCI bridge to [bus 06]
May 22 20:16:21 rohrer-enard kernel: pci 0000:00:03.0:   bridge window [io  0xe000-0xefff]
May 22 20:16:21 rohrer-enard kernel: pci 0000:00:03.0:   bridge window [mem 0xfa000000-0xfb0fffff]
May 22 20:16:21 rohrer-enard kernel: pci 0000:00:03.0:   bridge window [mem 0xffe0000000-0xfff20fffff 64bit pref]
May 22 20:16:21 rohrer-enard kernel: pci 0000:00:03.2: PCI bridge to [bus 07]

GPU with x4 or 8x lanes is up.

 

 

But if I set back to x16, the gpu doesn't launch.. It's kind of "skipped", jumping from peripheral 05:00 to 08:00

 

May 22 21:39:51 rohrer-enard kernel: pci 0000:05:00.0: [8086:f1a8] type 00 class 0x010802
May 22 21:39:51 rohrer-enard kernel: pci 0000:05:00.0: reg 0x10: [mem 0xfb200000-0xfb203fff 64bit]
May 22 21:39:51 rohrer-enard kernel: pci 0000:00:02.3: PCI bridge to [bus 05]
May 22 21:39:51 rohrer-enard kernel: pci 0000:00:02.3:   bridge window [mem 0xfb200000-0xfb2fffff]
May 22 21:39:51 rohrer-enard kernel: pci 0000:00:03.0: PCI bridge to [bus 06]
May 22 21:39:51 rohrer-enard kernel: pci 0000:00:1c.0: PCI bridge to [bus 07]
May 22 21:39:51 rohrer-enard kernel: pci 0000:08:00.0: [1a03:1150] type 01 class 0x060400
May 22 21:39:51 rohrer-enard kernel: pci 0000:08:00.0: enabling Extended Tags
May 22 21:39:51 rohrer-enard kernel: pci 0000:08:00.0: supports D1 D2
May 22 21:39:51 rohrer-enard kernel: pci 0000:08:00.0: PME# supported from D0 D1 D2 D3hot D3cold
May 22 21:39:51 rohrer-enard kernel: pci 0000:00:1c.2: PCI bridge to [bus 08-09]
May 22 21:39:51 rohrer-enard kernel: pci 0000:00:1c.2:   bridge window [io  0xe000-0xefff]
May 22 21:39:51 rohrer-enard kernel: pci 0000:00:1c.2:   bridge window [mem 0xfa000000-0xfb0fffff]
May 22 21:39:51 rohrer-enard kernel: pci_bus 0000:09: extended config space not accessible

I already tried to set full legacy boot from Unraid and Legacy Oprom from the motherboard, it didn't work.

I disabled any virtualization parameter within the motherboard with no more result.

I finaly installed Windows Server, set the GPU PCIE lanes in x16, and then the GPU showed up!

 

Does this error speaks to anyone? Is it an Unraid bug or misconfiguration?

 

I managed some parameters in the GRUB, but as far, it didn't helped me by now.

Thanks for your help, I dragged the logs files for better support.
 

x8 syslog.txt x16 syslog.txt

Edited May 23, 20224 yr by gyto6

I still need some help please.