DGX Spark apt update failure (EXPKEYSIG)

Accelerated Computing DGX Spark / GB10 User Forum Announcements
1

We’re aware of an issue where sudo apt update fails on DGX Spark due to an expired NVIDIA Workbench repo GPG key:

The following signatures were invalid: EXPKEYSIG CD63F8B21266DE3C

Workaround
Run on the Spark system:


curl -fsSL https://workbench.download.nvidia.com/stable/linux/gpgkey | \
  gpg --dearmor | sudo tee /usr/share/keyrings/ai-workbench-desktop-key.gpg > /dev/null

sudo apt update

An automated fix is in progress. This manual step should unblock in the meantime. Please reply here if you continue to see issues after applying the workaround.

10 Likes
2

we have permanent fix:

sudo apt update (still see the error)
sudo apt full-upgrade (installs a new key)
sudo apt update (no error)

4 Likes