Public bug reported:

Hi, I have been using Ubuntu 14.04 LTS for 6 years without problem and I
decided to renew my operating system to Ubuntu 18.04 LTS with fresh
install 5 months ago.

When I started to use ubuntu 18.04 LTS, I encountered some desktop
freezes randomly. While it was happening, I can heart that my laptop's
fan noise was incredibly increasing abnormally at that moment.

So I have decided to change my driver from X.org Server to Nvidia
(recommended). When I switch my driver from open source graphic driver
to proprietary graphic driver, I hoped that the problem might be solved.
But after a week, the problem occured again. After that in the same day
the same freezes occur continuosly as much as 3 or 4 times. I don't know
why it happens. The only thing I know is Ubuntu 14.04 LTS was using
Unity Desktop, and Ubuntu 18.04 LTS is using GNOME Desktop anymore.

I tried to alt + f2 and r command to refresh gnome desktop. Also ctrl +
alt + f3 for instance, and typing gnome-shell --replace & disown to
refresh gnome dektop. They sometimes works, but only if I notice early
that the freezes coming. If I miss that moment, the screen completely
freezes and neither cursor click nor keyboard input works

What should I do?

1) &
2)

My system info:
=================================================
Description:       Ubuntu 18.04.2 LTS
Release:           18.04
Ubuntu Software:   3.28.1
=================================================


3)

I shouldn't have had to restart my system again, again and again due to
desktop freezes. While it happens, session cannot be rescued. It damages
my personal / work data on the RAM at that moment. I mean I encountered
data loss a lot of times on the gedit or the web browser mostly, while
writing or doing something. I was expecting this issue was reported
someone in the internet since 5 months. Because of this, I didn't deal
with it. But I guess so this is not common issue. Because, there is no
patch for it. I am looking details of system update when it has come
each time, but no patch there until this now.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: xorg 1:7.7+19ubuntu7.1
ProcVersionSignature: Ubuntu 4.15.0-47.50-generic 4.15.18
Uname: Linux 4.15.0-47-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
.proc.driver.nvidia.gpus.0000.03.00.0: Error: [Errno 21] Is a directory: 
'/proc/driver/nvidia/gpus/0000:03:00.0'
.proc.driver.nvidia.registry: Binary: ""
.proc.driver.nvidia.version:
 NVRM version: NVIDIA UNIX x86_64 Kernel Module  390.116  Sun Jan 27 07:21:36 
PST 2019
 GCC version:  gcc version 7.3.0 (Ubuntu 7.3.0-27ubuntu1~18.04)
ApportVersion: 2.20.9-0ubuntu7.6
Architecture: amd64
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Mon Apr  8 04:35:11 2019
DistUpgraded: Fresh install
DistroCodename: bionic
DistroVariant: ubuntu
DkmsStatus:
 nvidia, 390.116, 4.15.0-46-generic, x86_64: installed
 nvidia, 390.116, 4.15.0-47-generic, x86_64: installed
ExtraDebuggingInterest: Yes, including running git bisection searches
GpuHangFrequency: Several times a week
GpuHangReproducibility: Seems to happen randomly
GpuHangStarted: Immediately after installing this version of Ubuntu
GraphicsCard:
 Intel Corporation UHD Graphics 620 [8086:5917] (rev 07) (prog-if 00 [VGA 
controller])
   Subsystem: Dell UHD Graphics 620 [1028:0817]
   Subsystem: Dell GM108M [GeForce MX130] [1028:0817]
InstallationDate: Installed on 2018-11-02 (156 days ago)
InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
Lsusb:
 Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
 Bus 001 Device 004: ID 8087:0a2b Intel Corp. 
 Bus 001 Device 003: ID 0c45:6717 Microdia 
 Bus 001 Device 002: ID 1038:1707 SteelSeries ApS 
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: Dell Inc. Latitude 5590
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-47-generic 
root=UUID=880beb69-81b9-441e-bd97-f469b15dab9f ro quiet splash vt.handoff=1
SourcePackage: xorg
Symptom: display
Title: Xorg freeze
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/25/2018
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.7.0
dmi.board.name: 0RMKK4
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 10
dmi.chassis.vendor: Dell Inc.
dmi.modalias: 
dmi:bvnDellInc.:bvr1.7.0:bd12/25/2018:svnDellInc.:pnLatitude5590:pvr:rvnDellInc.:rn0RMKK4:rvrA00:cvnDellInc.:ct10:cvr:
dmi.product.family: Latitude
dmi.product.name: Latitude 5590
dmi.sys.vendor: Dell Inc.
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.95-1~18.04.1
version.libgl1-mesa-dri: libgl1-mesa-dri 18.2.8-0ubuntu0~18.04.2
version.libgl1-mesa-glx: libgl1-mesa-glx 18.2.8-0ubuntu0~18.04.2
version.nvidia-graphics-drivers: nvidia-graphics-drivers-* N/A
version.xserver-xorg-core: xserver-xorg-core 2:1.19.6-1ubuntu4.2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:18.0.1-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 
2:2.99.917+git20171229-1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.15-2

** Affects: xorg (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug bionic desktop freeze freezes gnome screen 
third-party-packages ubuntu

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https://bugs.launchpad.net/bugs/1823583

Title:
  Xorg freeze ( also Nvidia freeze (tested) )

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