lspci command cannot work normally in ubuntu16.04.4 with 4.10.0-40 kernel

[seven-wang]

Execute lspci command in ubuntu 16.04.4 with kernel update (kernel:4.10.0-40-generic), but always prompt error that cannot open /sys/bus/pci/devices/0001:00:02.0/resource: no such file or directory.

Execute lspci command in ubuntu 16.04.4 without kernel update (kernel:4.4.0-116-generic), issue not exist.

[seven-wang (seven-tj)]

check sys/bus/pci/devices/0001:00:02.0/ in ubuntu 16.04.4, and could not find this device.

[Adam Conrad (adconrad)]

Linux 4.10.0-40 is wildly out of date. The current HWE kernel on 16.04 is 4.13.0-43. Do you still see issues if you upgrade?

[seven-wang (seven-tj)]

hi Adam, thanks for your reply. we found the reson for this issue is due to the intel VMD feature in BIOS. Now we disable the intel VMD feature, and the lspci command can work normally.

[Jay (jayram1989)]

Hello Team,

I'm experiencing similiar issue on Ubuntu 16.04 on Dell 5820 Tower. I'm using Display port monitor, inorder to get proper display I need to download nvidia driver from ppa:graphics-drivers/ppa

After install nvidia-384 and did a reboot, still no display, but can able to see the PCI modules conflicted

#lspci -v
lspci: Cannot open /sys/bus/pci/devices/0000:00:03.0/resource: No such file or directory

There is no issue with Ubuntu 18.04 , which is works perfectly on the same machine. Ubuntu 16.04 having issue.

Below is the environment details.
=================================

Ubuntu 16.04.4 LTS Xenial
Kernel - 4.15.0-46-generic

NVIDIA Quadro P4000

$lshw -C Display
WARNING: you should run this program as super-user.
  *-display
       description: VGA compatible controller
       product: NVIDIA Corporation
       vendor: NVIDIA Corporation
       physical id: 0
       bus info: pci@0000:65:00.0
       version: a1
       width: 64 bits
       clock: 33MHz
       capabilities: vga_controller bus_master cap_list rom
       configuration: driver=nvidia latency=0
       resources: irq:29 memory:d7000000-d7ffffff memory:c0000000-cfffffff memory:d0000000-d1ffffff ioport:b000(size=128) memory:d8000000-d807ffff

#dpkg -l | grep xserver-xorg-core-hwe-16.04
ii xserver-xorg-core-hwe-16.04 2:1.19.5-0ubuntu2~16.04.1

$dpkg -l | grep nvid
ii nvidia-384 384.130-0ubuntu0.16.04.1 amd64 NVIDIA binary driver - version 384.130
ii nvidia-opencl-icd-384 384.130-0ubuntu0.16.04.1 amd64 NVIDIA OpenCL ICD
ii nvidia-prime 0.8.2 amd64 Tools to enable NVIDIA's Prime
ii nvidia-settings 415.27-0ubuntu0~gpu16.04.1 amd64 Tool for configuring the NVIDIA graphics driver

[Jay (jayram1989)]

Created a new bug for this https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1818816