Bug#950586: REDEFINITION: dkms build fails with kernel 5.4.0-3-686-pae but NOT with 4.17.0-3-686-pae

[js jb]

 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 <anbe at 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
  
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