One 2080 under CentOS 7, 2 under Ubuntu

I just had ubuntu 20 installed and both GPU were detected with nvidia-smi I reinstalled with Cent7

ran these steps:
yum update -y
reboot
yum install kernel-devel-$(uname -r) kernel-headers-$(uname -r)
yum install --enablerepo=extras epel-release
yum-config-mananger --add-repo=https://developer.download.nvidia.com/compute/cuda/repos/rhel7/x86_64/cuda-rhel7.repo
reboot
yum -y install nvidia-driver-latest-dkms cuda
yum -y install cuda-drivers
reboot

Nvidia-smi will only show one GPU

[root@biocwk-01423l ~]# nvidia-smi -L
GPU 0: NVIDIA GeForce RTX 2080 Ti (UUID: GPU-d808aab1-6d93-9953-f28d-9fa9b532eb38)
[root@biocwk-01423l ~]# lspci | grep VGA
06:00.0 VGA compatible controller: ASPEED Technology, Inc. ASPEED Graphics Family (rev 41)
09:00.0 VGA compatible controller: NVIDIA Corporation TU102 [GeForce RTX 2080 Ti] (rev a1)
41:00.0 VGA compatible controller: NVIDIA Corporation TU102 [GeForce RTX 2080 Ti Rev. A] (rev a1)

nvidia-bug-report.log.gz (3.6 KB)