Ubuntu 20.04 Crashes

[sdam1n]

I recently bought a pc. After installing ubuntu it constantly crashes after about 1 hour.
The screen remains frozen. Sometimes pc doesn't restart or shutdown or start. Mainly the gui remains stuck. Then the pc needs to hard reset. I clean reinstalled Ubuntu again but the problem remains the same. During the reinstallation,the installer also crashed once.


I am using an old monitor with hdmi to vga converter.


Installation Info:
I used GPT partition scheme to install ubuntu by enabling uefi from the bios.


My PC Config:
Processor: Ryzen 3 3200G
Mobo: MSI A320M pro max
Ram: 16 GB
SSD: 120 GB
HDD: 500 GB(This is a old HDD)
and an old asus optical drive from my previous Desktop.


free -h:
total used free shared buff/cache available
Mem: 13Gi 1.5Gi 10Gi 46Mi 1.4Gi 11Gi
Swap: 2.0Gi 0B 2.0Gi

sysctl vm.swappiness

vm.swappiness = 60

swapon -s

Filename Type Size Used Priority
/swapfile file 2097148 0 -2



sudo lshw -C memory

*-firmware
description: BIOS
vendor: American Megatrends Inc.
physical id: 0
version: 2.80
date: 12/07/2020
size: 64KiB
capacity: 16MiB
capabilities: pci upgrade shadowing cdboot bootselect socketedrom edd int13floppy1200 int13floppy720 int13floppy2880 int5printscreen int9keyboard int14serial int17printer acpi usb biosbootspecification uefi
*-memory
description: System Memory
physical id: f
slot: System board or motherboard
size: 16GiB
*-bank:0
description: DIMM DDR4 Synchronous Unbuffered (Unregistered) 2400 MHz (0.4 ns)
product: F4-2400C15-8GVR
vendor: Unknown
physical id: 0
serial: 00000000
slot: DIMM 0
size: 8GiB
width: 64 bits
clock: 2400MHz (0.4ns)
*-bank:1
description: DIMM DDR4 Synchronous Unbuffered (Unregistered) 2400 MHz (0.4 ns)
product: F4-2400C15-8GVR
vendor: Unknown
physical id: 1
serial: 00000000
slot: DIMM 0
size: 8GiB
width: 64 bits
clock: 2400MHz (0.4ns)
*-cache:0
description: L1 cache
physical id: 11
slot: L1 - Cache
size: 384KiB
capacity: 384KiB
clock: 1GHz (1.0ns)
capabilities: pipeline-burst internal write-back unified
configuration: level=1
*-cache:1
description: L2 cache
physical id: 12
slot: L2 - Cache
size: 2MiB
capacity: 2MiB
clock: 1GHz (1.0ns)
capabilities: pipeline-burst internal write-back unified
configuration: level=2
*-cache:2
description: L3 cache
physical id: 13
slot: L3 - Cache
size: 4MiB
capacity: 4MiB
clock: 1GHz (1.0ns)
capabilities: pipeline-burst internal write-back unified
configuration: level=3

sudo dmidecode -s bios-version

2.80

sudo journalctl -b -1 -e

Sep 08 17:08:02 my-pc kernel: loop1: detected capacity change from 0 to 133320
Sep 08 17:08:02 my-pc kernel: loop2: detected capacity change from 0 to 66152
Sep 08 17:08:02 my-pc kernel: loop3: detected capacity change from 0 to 113536
Sep 08 17:08:02 my-pc kernel: loop4: detected capacity change from 0 to 104360
Sep 08 17:08:02 my-pc systemd[1]: Finished Flush Journal to Persistent Storage.
Sep 08 17:08:02 my-pc systemd[1]: Started udev Kernel Device Manager.
Sep 08 17:08:02 my-pc systemd[1]: Starting Show Plymouth Boot Screen...
Sep 08 17:08:02 my-pc kernel: loop5: detected capacity change from 0 to 66144
Sep 08 17:08:02 my-pc systemd[1]: Mounted Mount unit for snapd, revision 12883.
Sep 08 17:08:02 my-pc systemd[1]: Mounted Mount unit for gnome-3-34-1804, revis>
Sep 08 17:08:02 my-pc systemd[1]: Mounted Mount unit for gtk-common-themes, rev>
Sep 08 17:08:02 my-pc systemd[1]: Received SIGRTMIN+20 from PID 344 (plymouthd).
Sep 08 17:08:02 my-pc systemd[1]: Started Show Plymouth Boot Screen.
Sep 08 17:08:02 my-pc systemd[1]: Condition check resulted in Dispatch Password>
Sep 08 17:08:02 my-pc systemd[1]: Started Forward Password Requests to Plymouth>
Sep 08 17:08:02 my-pc systemd[1]: Reached target Local Encrypted Volumes.
Sep 08 17:08:02 my-pc systemd[1]: Mounted Mount unit for snap-store, revision 5>
Sep 08 17:08:02 my-pc systemd[1]: Mounted Mount unit for core18, revision 2128.
Sep 08 17:08:02 my-pc systemd[1]: Mounted Mount unit for snapd, revision 12704.
Sep 08 17:08:10 my-pc systemd[1]: plymouth-start.service: Main process exited, >
Sep 08 17:08:10 my-pc systemd[1]: plymouth-start.service: Failed with result 's>
Sep 08 17:08:17 my-pc systemd[1]: Caught <ABRT>, dumped core as pid 353.
Sep 08 17:08:17 my-pc systemd[1]: Freezing execution.
lines 979-1001/1001 (END)
Sep 08 17:08:02 my-pc kernel: loop1: detected capacity change from 0 to 133320
Sep 08 17:08:02 my-pc kernel: loop2: detected capacity change from 0 to 66152
Sep 08 17:08:02 my-pc kernel: loop3: detected capacity change from 0 to 113536
Sep 08 17:08:02 my-pc kernel: loop4: detected capacity change from 0 to 104360
Sep 08 17:08:02 my-pc systemd[1]: Finished Flush Journal to Persistent Storage.
Sep 08 17:08:02 my-pc systemd[1]: Started udev Kernel Device Manager.
Sep 08 17:08:02 my-pc systemd[1]: Starting Show Plymouth Boot Screen...
Sep 08 17:08:02 my-pc kernel: loop5: detected capacity change from 0 to 66144
Sep 08 17:08:02 my-pc systemd[1]: Mounted Mount unit for snapd, revision 12883.
Sep 08 17:08:02 my-pc systemd[1]: Mounted Mount unit for gnome-3-34-1804, revision 72.
Sep 08 17:08:02 my-pc systemd[1]: Mounted Mount unit for gtk-common-themes, revision 1515.
Sep 08 17:08:02 my-pc systemd[1]: Received SIGRTMIN+20 from PID 344 (plymouthd).
Sep 08 17:08:02 my-pc systemd[1]: Started Show Plymouth Boot Screen.
Sep 08 17:08:02 my-pc systemd[1]: Condition check resulted in Dispatch Password Requests to Console Directory Watch being skipped.
Sep 08 17:08:02 my-pc systemd[1]: Started Forward Password Requests to Plymouth Directory Watch.
Sep 08 17:08:02 my-pc systemd[1]: Reached target Local Encrypted Volumes.
Sep 08 17:08:02 my-pc systemd[1]: Mounted Mount unit for snap-store, revision 547.
Sep 08 17:08:02 my-pc systemd[1]: Mounted Mount unit for core18, revision 2128.
Sep 08 17:08:02 my-pc systemd[1]: Mounted Mount unit for snapd, revision 12704.
Sep 08 17:08:10 my-pc systemd[1]: plymouth-start.service: Main process exited, code=killed, status=11/SEGV
Sep 08 17:08:10 my-pc systemd[1]: plymouth-start.service: Failed with result 'signal'.
Sep 08 17:08:17 my-pc systemd[1]: Caught <ABRT>, dumped core as pid 353.
Sep 08 17:08:17 my-pc systemd[1]: Freezing execution.
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lines 979-1001/1001 (END)
Sep 08 17:08:02 my-pc kernel: loop1: detected capacity change from 0 to 133320
Sep 08 17:08:02 my-pc kernel: loop2: detected capacity change from 0 to 66152
Sep 08 17:08:02 my-pc kernel: loop3: detected capacity change from 0 to 113536
Sep 08 17:08:02 my-pc kernel: loop4: detected capacity change from 0 to 104360
Sep 08 17:08:02 my-pc systemd[1]: Finished Flush Journal to Persistent Storage.
Sep 08 17:08:02 my-pc systemd[1]: Started udev Kernel Device Manager.
Sep 08 17:08:02 my-pc systemd[1]: Starting Show Plymouth Boot Screen...
Sep 08 17:08:02 my-pc kernel: loop5: detected capacity change from 0 to 66144
Sep 08 17:08:02 my-pc systemd[1]: Mounted Mount unit for snapd, revision 12883.
Sep 08 17:08:02 my-pc systemd[1]: Mounted Mount unit for gnome-3-34-1804, revision 72.
Sep 08 17:08:02 my-pc systemd[1]: Mounted Mount unit for gtk-common-themes, revision 1515.
Sep 08 17:08:02 my-pc systemd[1]: Received SIGRTMIN+20 from PID 344 (plymouthd).
Sep 08 17:08:02 my-pc systemd[1]: Started Show Plymouth Boot Screen.
Sep 08 17:08:02 my-pc systemd[1]: Condition check resulted in Dispatch Password Requests to Console Directory Watch being skipped.
Sep 08 17:08:02 my-pc systemd[1]: Started Forward Password Requests to Plymouth Directory Watch.
Sep 08 17:08:02 my-pc systemd[1]: Reached target Local Encrypted Volumes.
Sep 08 17:08:02 my-pc systemd[1]: Mounted Mount unit for snap-store, revision 547.
Sep 08 17:08:02 my-pc systemd[1]: Mounted Mount unit for core18, revision 2128.
Sep 08 17:08:02 my-pc systemd[1]: Mounted Mount unit for snapd, revision 12704.
Sep 08 17:08:10 my-pc systemd[1]: plymouth-start.service: Main process exited, code=killed, status=11/SEGV
Sep 08 17:08:10 my-pc systemd[1]: plymouth-start.service: Failed with result 'signal'.
Sep 08 17:08:17 my-pc systemd[1]: Caught <ABRT>, dumped core as pid 353.
Sep 08 17:08:17 my-pc systemd[1]: Freezing execution.