Please try this patch for nvidia dkms package
https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers/+bug/1836630/comments/23

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https://bugs.launchpad.net/bugs/1843144

Title:
  Nvidia card consumes large amount of power in suspend mode

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  I am running 19.04 on a Lenovo X1 Extreme. The laptop has an Nvidia
  1050 Ti Mobile graphics card. I am using the Nvidia driver version 430
  via the graphics-drivers PPA package nvidia-graphics-drivers-430 of
  version "430.40-0ubuntu0~gpu19.04.2".

  When the computer has the Nvidia drivers active via prime-select, a
  large amount of power is consumed in suspend mode. I have attached the
  output of this script:
  https://www.thinkwiki.org/wiki/ACPI_sleep_power_drain_test_script
  (battery-test.log) which estimates that the computer uses about 4.5 W
  on average during suspend.

  On the other hand, when the Nvidia card is not in use (prime-select is
  used to switch to Intel graphics and bbswitch is used to ensure the
  Nvidia card is off), the power drain during suspend mode is 1 W or
  less. Therefore, it looks like the system fails to power-down the
  Nvidia card before suspending when it is being used.

  ProblemType: Bug
  DistroRelease: Ubuntu 19.04
  Package: linux-image-5.0.0-27-generic 5.0.0-27.28
  ProcVersionSignature: Ubuntu 5.0.0-27.28-generic 5.0.21
  Uname: Linux 5.0.0-27-generic x86_64
  NonfreeKernelModules: nvidia_modeset nvidia
  ApportVersion: 2.20.10-0ubuntu27.1
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  matt       2519 F.... pulseaudio
   /dev/snd/controlC0:  matt       2519 F.... pulseaudio
  CurrentDesktop: ubuntu:GNOME
  Date: Sat Sep  7 11:54:57 2019
  InstallationDate: Installed on 2019-09-04 (3 days ago)
  InstallationMedia: Ubuntu 19.04 "Disco Dingo" - Release amd64 (20190416)
  MachineType: LENOVO 20MGS1YW00
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.0.0-27-generic 
root=UUID=3a5c73f9-5be3-4590-88a9-e362d949931c ro quiet splash vt.handoff=1
  RelatedPackageVersions:
   linux-restricted-modules-5.0.0-27-generic N/A
   linux-backports-modules-5.0.0-27-generic  N/A
   linux-firmware                            1.178.3
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 07/03/2019
  dmi.bios.vendor: LENOVO
  dmi.bios.version: N2EET41W (1.23 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 20MGS1YW00
  dmi.board.vendor: LENOVO
  dmi.board.version: SDK0J40697 WIN
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: None
  dmi.modalias: 
dmi:bvnLENOVO:bvrN2EET41W(1.23):bd07/03/2019:svnLENOVO:pn20MGS1YW00:pvrThinkPadX1Extreme:rvnLENOVO:rn20MGS1YW00:rvrSDK0J40697WIN:cvnLENOVO:ct10:cvrNone:
  dmi.product.family: ThinkPad X1 Extreme
  dmi.product.name: 20MGS1YW00
  dmi.product.sku: LENOVO_MT_20MG_BU_Think_FM_ThinkPad X1 Extreme
  dmi.product.version: ThinkPad X1 Extreme
  dmi.sys.vendor: LENOVO

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