Bug#949067: nvidia-legacy-340xx-kernel-dkms: NVRM: RmInitAdapter failed! on Linux Kernel 5.4

[Pietro Ventura]

Package: nvidia-legacy-340xx-kernel-dkms
Version: 340.108
Severity: important

Dear maintainer,

The nvidia-legacy-340xx kernel module cannot be loaded.

When I boot the system with Kernel 5.4.0-2, Xorg does not start and reports
the message:

[    11.421] (EE) NVIDIA(GPU-0): Failed to initialize the NVIDIA GPU at
PCI:1:0:0.  Please
[    11.421] (EE) NVIDIA(GPU-0):     check your system's kernel log for
additional error
[    11.421] (EE) NVIDIA(GPU-0):     messages and refer to Chapter 8:
Common Problems in the
[    11.421] (EE) NVIDIA(GPU-0):     README for additional information.
[    11.421] (EE) NVIDIA(GPU-0): Failed to initialize the NVIDIA graphics
device!
[    11.421] (EE) NVIDIA(0): Failing initialization of X screen 0

In dmesg:

[   11.392659] NVRM: VM: nv_alloc_contig_pages: failed to DMA-map memory
[   11.392928] NVRM: RmInitAdapter failed! (0x24:0xb:1171)
[   11.392945] NVRM: rm_init_adapter failed for device bearing minor number
0
[   11.392972] NVRM: nvidia_frontend_open: minor 0, module->open() failed,
error -5


This does not happen by booting the system with Kernel 5.2.0-3.

Attached nvidia-bug-report logs for both versions of the Kernel

Thanks for the support
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