The NVIDIA driver is only supported by some kernels, not all. That in itself is not a bug. To cover the possibility that it will fail to build for some kernels and to keep building for others, a bug report either to the driver itself (this bug) or to the automated builder (https://bugs.launchpad.net/ubuntu/+source/dkms/+bugs) is probably appropriate.
While Canonical might not expect desktop users to have multiple types of kernels installed, that's something I do see people do often so suggest it should be part of QA.
The NVIDIA driver is only supported by some kernels, not all. That in itself is not a bug. To cover the possibility that it will fail to build for some kernels and to keep building for others, a bug report either to the driver itself (this bug) or to the automated builder (https:/ /bugs.launchpad .net/ubuntu/ +source/ dkms/+bugs) is probably appropriate.
While Canonical might not expect desktop users to have multiple types of kernels installed, that's something I do see people do often so suggest it should be part of QA.