prime-select fails to switch to nvidia profile (/etc/modprobe.d/blacklist-nvidia.conf missing)

[Horst Schirmeier]

When running prime-select 0.8.6 to switch to the nvidia profile on a dual-GPU laptop (Lenovo ThinkPad T460p, Intel Corporation HD Graphics 530 (rev 06), NVIDIA Corporation GM108M [GeForce 940MX] (rev a2)), it fails with a Python traceback reporting a missing /etc/modprobe.d/blacklist-nvidia.conf.

Command to run: "prime-select nvidia"

Expected: "prime-select query" now prints "nvidia".

Actual result:
root@kalymnos:~# prime-select nvidia
Info: selecting the nvidia profile
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-4.15.0-15-generic
Found initrd image: /boot/initrd.img-4.15.0-15-generic
Found linux image: /boot/vmlinuz-4.15.0-13-generic
Found initrd image: /boot/initrd.img-4.15.0-13-generic
Found memtest86+ image: /memtest86+.elf
Found memtest86+ image: /memtest86+.bin
Found Windows 10 on /dev/sda1
done
Traceback (most recent call last):
  File "/usr/bin/prime-select", line 294, in <module>
    switcher.enable_profile(arg)
  File "/usr/bin/prime-select", line 114, in enable_profile
    self._enable_nvidia()
  File "/usr/bin/prime-select", line 150, in _enable_nvidia
    os.unlink(self._blacklist_file)
FileNotFoundError: [Errno 2] No such file or directory: '/etc/modprobe.d/blacklist-nvidia.conf'
root@kalymnos:~# prime-select query
intel

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: nvidia-prime 0.8.6
ProcVersionSignature: Ubuntu 4.15.0-15.16-generic 4.15.15
Uname: Linux 4.15.0-15-generic x86_64
ApportVersion: 2.20.9-0ubuntu4
Architecture: amd64
CurrentDesktop: KDE
Date: Thu Apr 12 10:49:42 2018
Dependencies:

InstallationDate: Installed on 2016-11-26 (501 days ago)
InstallationMedia: Kubuntu 16.10 "Yakkety Yak" - Release amd64 (20161012.1)
PackageArchitecture: all
SourcePackage: nvidia-prime
UpgradeStatus: Upgraded to bionic on 2018-03-14 (28 days ago)

[Launchpad Janitor (janitor)]

This bug was fixed in the package nvidia-prime - 0.8.7

---------------
nvidia-prime (0.8.7) bionic; urgency=medium

  * prime-select:
    - Do not fail if the blacklist file is not there (LP: #1763302).

 -- Alberto Milone <email address hidden> Thu, 12 Apr 2018 13:04:23 +0200