Public bug reported:

I am not sure that it is something that an issue caused by nvidia-prime
or if it is something that is cause in the drivers or if it is a bug with
the kernel itself, cause it seems to be a problem with Linux PM, so this bug
could be moved if needed

*** What's Wrong? ***

As the title states, I am unable to use the Nvidia GPU when I have
changed profile for intel then computer on suspend for more than 30
minutes ( This has to be determined precisely how long until I get the
issue ) and then set back the profile to nvidia.

So basically, it seems that the nvidia modules are unable to be loaded, I have 
tried to fix
the issue using bbswitch. It doesn't work neither, if the 
/sys/bus/pci/devices/0000\:01\:00.0/power/control is set to auto, I am unable 
to load the kernel modules anymore.

*** What do I expect ***

Well, I was hoping that I would be able to keep my laptop on and simply switch 
from one GPU to other
seamlessly. It is, until I put my laptop on suspend for an extended time while 
I am on powersaving mode

************************

ProblemType: Bug
DistroRelease: Ubuntu 19.04
Package: nvidia-prime 0.8.10
Uname: 5.0.0-14-generic #15-Ubuntu x86_64
NonfreeKernelModules: nvidia_uvm nvidia_modeset nvidia
Architecture: amd64
CurrentDesktop: MATE
CurrentDM: GDM3
Date Thursday May 2nd 2019 7:49 PM
InstallationDate: Installed on  (0 days ago)
SourcePackage: nvidia-prime
UpgradeStatus: No upgrade log present (fresh install)

Description:    Ubuntu 19.04
Release:        19.04
nvidia-prime:
  Installed: 0.8.10
  Candidate: 0.8.10
  Version table:
 *** 0.8.10 500
        500 http://ca.archive.ubuntu.com/ubuntu disco/main amd64 Packages
        500 http://ca.archive.ubuntu.com/ubuntu disco/main i386 Packages
        100 /var/lib/dpkg/status


/var/lib/dpkg/status -> https://paste.ubuntu.com/p/McmJHRgjTH/

https://paste.ubuntu.com/p/Pxnw7mDmzQ/ -> dmesg before issue


**** MORE dmesg will come, need to get fresh data! *****

** Affects: nvidia-drivers-ubuntu
     Importance: Undecided
         Status: New

** Affects: nvidia-prime (Ubuntu)
     Importance: Undecided
         Status: New

** Also affects: nvidia-drivers-ubuntu
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1827446

Title:
  Unable to switch back to nvidia after suspend on intel

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