Hello, I'm having the same problem. Apparently the cause is the lack of firmware-nvidia-gsp, which is now a virtual package:
# apt install nvidia-driver Reading package lists... Done Building dependency tree... Done Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: nvidia-kernel-dkms : Depends: firmware-nvidia-gsp (= 525.85.12) but it is not installable or firmware-nvidia-gsp-525.85.12 but it is not installable # apt install firmware-nvidia-gsp Reading package lists... Done Building dependency tree... Done Reading state information... Done Package firmware-nvidia-gsp is not available, but is referred to by another package. This may mean that the package is missing, has been obsoleted, or is only available from another source E: Package 'firmware-nvidia-gsp' has no installation candidate Is it really obsolete, and in this case it should not be in the dependency tree of nvidia-driver, or is it just to be released? -- Fernando Santagata