Thank you very much Andreas for your quick response and explanation of the problem. I was able to install nvidia-driver_440.44-2 on my 4.17 and, after a few days of testing, expect the upgrade tothe 5.4 kernel will work,. However, I had some difficulty getting the 440.44-2 driver to work at first: this was because the install did notremove a number of packages from the old 390.87 driver (listed below), including nvidia-kernel-support and nvidia-kernel-source,so that after the initial install the nvidia module was not found. Removing the list of 390.87 packages fixed that problem: perhaps the new driver should have removed some of these packages. I did not check the package description before upgrading, so missed the part that said it had been tested only through linux 4.20 kernel.Perhaps this would have been easier if the nvidia-driver package depended on a linux kernel version <= 4.20? thanks again,--jack
List of nvidia 390.87 packages not remove after install nvidia-driver 440.44-2 libegl-nvidia0 libgl1-nvidia-glvnd-glx libgl1-nvidia-glx-390.87 libgles-nvidia2 libglx-nvidia0 libnvidia-cfg1 libnvidia-compiler libnvidia-compiler-390.87 libnvidia-eglcore libnvidia-eglcore-390.87 libnvidia-encode1 libnvidia-fatbinaryloader libnvidia-fatbinaryloader-390.87 libnvidia-glcore libnvidia-glcore-390.87 libnvidia-ifr1 libnvidia-ml1 libnvidia-ptxjitcompiler1 nvidia-alternative nvidia-cuda-mps nvidia-detect nvidia-driver-bin nvidia-driver-bin-390.87 nvidia-driver-libs nvidia-egl-icd nvidia-kernel-390.87 nvidia-kernel-source nvidia-kernel-support nvidia-legacy-check nvidia-opencl-icd nvidia-vdpau-driver On Monday, February 3, 2020, 4:27:39 PM EST, Andreas Beckmann <a...@debian.org> wrote: On 03/02/2020 22.14, js wrote: > I expected the dkms module would be built for 5.4 as it was for 4.17. The nvidia kernel module build usually breaks with every new major kernel release, e.g. 5.4 -> 5.5 > [I understand this is an older version of nvidia-kernel-dkms but did not Please check the description of the package, it will tell you the maximum kernel version where we successfully built the module for. (Usually the current kernel version at the time the package was uploaded.) > find a bug report regarding this and would normally not upgrade both > kernel and nvidia at the same time.] Then upgrade nvidia first. The driver should be backwards compatible. Andreas