Screen got distorted after sleep

Every time when I click sleep, after that when I logged in again, the screen goes distorted. Unable to see anything neither on the browser, not on the desktop screen. I think there is some serious issue. I have attached the screenshot also.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: xorg 1:7.7+19ubuntu14
ProcVersionSignature: Ubuntu 5.4.0-51.56-generic 5.4.65
Uname: Linux 5.4.0-51-generic x86_64
NonfreeKernelModules: nvidia
.proc.driver.nvidia.gpus.0000.01.00.0: Error: [Errno 21] Is a directory: '/proc/driver/nvidia/gpus/0000:01:00.0'
.proc.driver.nvidia.registry: Binary: ""
.proc.driver.nvidia.version:
 NVRM version: NVIDIA UNIX x86_64 Kernel Module 340.108 Wed Dec 11 11:06:58 PST 2019
 GCC version: gcc version 9.3.0 (Ubuntu 9.3.0-17ubuntu1~20.04)
ApportVersion: 2.20.11-0ubuntu27.8
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CasperMD5CheckResult: skip
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Thu Oct 22 20:17:37 2020
DistUpgraded: 2020-05-23 14:00:42,250 ERROR got error from PostInstallScript ./xorg_fix_proprietary.py (g-exec-error-quark: Failed to execute child process “./xorg_fix_proprietary.py” (No such file or directory) (8))
DistroCodename: focal
DistroVariant: ubuntu
DkmsStatus:
 nvidia-340, 340.108, 5.4.0-51-generic, x86_64: installed
 nvidia-340, 340.108, 5.4.0-52-generic, x86_64: installed
ExtraDebuggingInterest: No
GraphicsCard:
 Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] (rev 09) (prog-if 00 [VGA controller])
   Subsystem: Lenovo 3rd Gen Core processor Graphics Controller [17aa:3912]
   Subsystem: Lenovo GeForce 720M [17aa:3912]
InstallationDate: Installed on 2019-10-20 (369 days ago)
InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017)
MachineType: LENOVO 20245
ProcEnviron:
 LANGUAGE=en_IN:en
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_IN
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-51-generic root=UUID=bec239af-1bf5-4f89-a5cc-66236d4ac8ae ro quiet splash vt.handoff=7
SourcePackage: xorg
Symptom: display
UpgradeStatus: Upgraded to focal on 2020-05-23 (153 days ago)
dmi.bios.date: 07/19/2013
dmi.bios.vendor: LENOVO
dmi.bios.version: 7BCN28WW(V1.11)
dmi.board.asset.tag: No Asset Tag
dmi.board.name: INVALID
dmi.board.vendor: LENOVO
dmi.board.version: 31900004WIN8 STD SGL
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Lenovo G500s
dmi.modalias: dmi:bvnLENOVO:bvr7BCN28WW(V1.11):bd07/19/2013:svnLENOVO:pn20245:pvrLenovoG500s:rvnLENOVO:rnINVALID:rvr31900004WIN8STDSGL:cvnLENOVO:ct10:cvrLenovoG500s:
dmi.product.family: IDEAPAD
dmi.product.name: 20245
dmi.product.sku: LENOVO_MT_20245
dmi.product.version: Lenovo G500s
dmi.sys.vendor: LENOVO
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.101-2
version.libgl1-mesa-dri: libgl1-mesa-dri 20.0.8-0ubuntu1~20.04.1
version.libgl1-mesa-glx: libgl1-mesa-glx 20.0.8-0ubuntu1~20.04.1
version.nvidia-graphics-drivers: nvidia-graphics-drivers-* N/A
version.xserver-xorg-core: xserver-xorg-core 2:1.20.8-2ubuntu2.4
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20200226-1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.16-1