I’m trying an eGPU setup with a Thinkpad X1 Carbon Gen 10 laptop running Ubuntu 20.04 (Linux kernel version 5.14.0-1059-oem). I install the nvidia-driver-530 driver (also tried versions 525, 515, 510, and 470) using the Additional Drivers menu. After rebooting, running nvidia-smi gives No devices were found.
Running lsmod | grep -i "nvidia" gives
nvidia_uvm 1277952 0
nvidia_drm 65536 0
nvidia_modeset 1273856 1 nvidia_drm
nvidia 55717888 14 nvidia_uvm,nvidia_modeset
drm_kms_helper 258048 2 nvidia_drm,i915
drm 557056 16 drm_kms_helper,nvidia,nvidia_drm,i915,ttm
Running lspci | grep VGA gives
00:02.0 VGA compatible controller: Intel Corporation Device 46a6 (rev 0c)
22:00.0 VGA compatible controller: NVIDIA Corporation Device 2489 (rev a1)
Running nvidia-bug-report.sh gives, among other things, Failed to initialize the NVIDIA GPU at PCI:34:0:0.
I’m aware of workrounds for Proxmox (i.e., echo 1 > /sys/bus/pci/devices/0000\:0X\:00.0/remove,
echo 1 > /sys/bus/pci/rescan) as well as kernel parameters such as rcutree.rcu_idle_gp_delay=1, but nothing I’ve tried works. I know that the problem is not with the GPU or the enclosure, since they work fine with another laptop.
nvidia-bug-report.log.gz (333.6 KB)