Clean Reinstall of Ubuntu on a Dual Boot System

[lambs2]

Hi,

So few months ago I built a PC and successfully installed a dual boot system: Windows 10 Education and Linux Ubuntu 18.04 (computer turns on, sends me to a menu with Ubuntu, Windows boot etc. Ubuntu being default if no other option is selected).
Everything seemed to be working great. Fast performance, quiet fans etc. until recently. Here's the issues:

1. My PC fans are constantly fluctuating whether idling or not and pretty loud when trying to open up something as simple as a the terminal, files folder or webpage.
2. In attempt to configure my system for school, get my bluetooth and dual monitor working, I've had to install lots of random packages. My file system seems like a total clutter and I know longer know what I'm able to delete without messing up the entire system.

[grahammechanical]

If you have installed applications through the Software Centre, then use the Software Centre to uninstall. If you have installed applications/packages through the command line, then use the apt remove or apt purge commands.

In a terminal type


man apt

to learn about the apt command


Removing a package removes all packaged data, but leaves usually small (modified) user configuration files behind, in case the remove was an accident. Just issuing an installation request for the accidentally removed package will restore its function as before in that case. On the other hand you can get rid of these leftovers by calling purge even on already removed packages. Note that this does not affect any data or configuration stored in your home directory.

Regards

[lambs2]

Hello!

First, a little background info:
So few months ago I built a PC and successfully installed a dual boot system: Windows 10 Education and Linux Ubuntu 18.04 (computer turns on, pops up a menu with Ubuntu, Windows boot etc. options, Ubuntu being default if no other option is selected). Everything seemed to be working great. Fast performance, quiet fans etc. until recently.

Here's the issues:
Note: *I have provided Basic system info, disk partitioning details, some command line results below, just in case.

1. My PC fans are constantly fluctuating whether idling or not and pretty loud when trying to open up something as simple as a the terminal, files folder or webpage.
- Someone suggested it might be my GPU. When running checks/tests through terminal, I noticed that my GPU fans are running at 300MHz (on idle). Tried to run some programs/videos in the background and the results remained the same.
- lm-sensors doesn't show the amount of information that other people are describing. It can't properly detect my GPU.

2. In attempt to configure my system for school online etc. I've had to install a lot of different packages. I have no idea know what I'm able to delete without messing up the entire system.
- I've tried clearing up space using basic terminal commands for cleaning, purging, cache etc. but surprisingly, I haven't used a ton of storage on my disk.

3. I'm not sure if there's any way of resetting my Ubuntu system to "factory" state (deleting all manually installed applications etc.) or if there's a way to clean reinstall Ubuntu onto my system without messing with the Windows dual boot (I only activation key one for the education version) or the grub menu setup. I'm not concerned about backing anything up on the Linux to be honest as I have nearly zero personal files on my system (I use Linux strictly for programming most of which is pushed onto Gitlab).

Now I know that some of the information seems vague (happy to share more details/results if needed), issues may be unrelated and some of the information may be completely irrelevant but thought I'd try and show the "big picture". I've tried a lot of things and the vast amounts of different information can get quite confusing for someone whose fairly new to Ubuntu.

If somebody could please provide me with some solid information on what the issue with the fans could be, whether option 3 is necessary and if so, how to do it, that would be MUCH appreciated.
Like I said, I've ran quite a few check commands on my terminal and have saved the results in a text file for future reference if needed.


Basic System Information:
Memory: 15.6 GiB
Processor: AMD Ryzen 3600
Graphics: NVIDIA [GeForce GTX 1660 SUPER]
Disk Capacity 1.5 TB (shows total capacity including SSD)

OS Name: Ubuntu 20.04.1 LTS
OS Type: 64-bit
GNOME Version: 3.36.3
Windowing System: X11
Kernel Release: 5.4.0-52-generic


Disk Partioning:
1TB Hard Disk (Linux)
/deb/sdb1 (30GB) - 22GB Free (26.6% full) | Partition Type: Linux Filesystem | Contents: Ext4 (v 1.0) - Mounted at Filesystem root
/dev/sdb2 (25GB) | Partition Type: Linux Swap (v1) - Active
/dev/sdb3 (650MB) | Partition Type: EFI System | Contents: FAT(32-bit-version) - Not mounted
/dev/sdb4 (945GB) - 927GV Free (1.8% full) | Partition Type: Linux Filesystem) | Contents: Ext4 (v 1.0) - Mounted at /home

500GB SSD (Windows)
/dev/sda1 (555MB) | Partition Type: Microsoft Windows Recovery Environment (System, No Automount) | Contents: NTFS - not mounted
/dev/sda2 (104MB) - 65 MB Free (37.0% full) | Partition Type: EFI System | Contents: FAT(32-bit-version) - Mounted at /boot/efi
/dev/sda3 (17MB) | Partition Type: Microsoft Reserved (No Automount) | Contents: Unknown
/dev/sda4 (499GB) | Partition Type: Basic Data | Contents: NTFS - Not Mounted
/dev/sda (1.1MB) | Contents: Unallocated Space


GPU detailed results via. terminal command:
command > nvidia-smi
+--------------------------------------------------------------------------------------------------------------+
| NVIDIA-SMI 450.80.02 Driver Version: 450.80.02 CUDA Version: 11.0 |
|----------------------------------------------+--------------------------------+------------------------------+
| GPU Name Persistence-M | Bus-Id Disp.A | Volatile Uncorr. ECC |
| Fan Temp Perf Pwr:Usage/Cap | Memory-Usage | GPU-Util Compute M. |
| | | MIG M |
|==========================+==================+=== ===============|
| 0 GeForce GTX 166... Off | 00000000:08:00.0 On | N/A |
| 0% 37C P8 10W / 130W | 380MiB / 5936MiB | 1% Default |
| | | N/A |
+---------------------------------------------+---------------------------------+-----------------------------+
+--------------------------------------------------------------------------------------------------------------+
| Processes: |
| GPU GI CI PID Type Process name GPU Memory |
| ID ID Usage |
|================================================= ===============|
| 0 N/A N/A 913 G /usr/lib/xorg/Xorg 35MiB |
| 0 N/A N/A 1761 G /usr/lib/xorg/Xorg 164MiB |
| 0 N/A N/A 1889 G /usr/bin/gnome-shell 155MiB |
| 0 N/A N/A 2374 G /usr/lib/firefox/firefox 2MiB |
| 0 N/A N/A 3183 G /usr/lib/firefox/firefox 2MiB |
| 0 N/A N/A 3392 G /usr/lib/firefox/firefox 2MiB |
| 0 N/A N/A 5329 G /usr/lib/firefox/firefox 2MiB |
+---------------------------------------------------------------------------------------------------------------+

command > nvidia-smi -q -d CLOCK
==============NVSMI LOG==============

Timestamp : Thu Oct 22 11:23:58 2020
Driver Version : 450.80.02
CUDA Version : 11.0

Attached GPUs : 1
GPU 00000000:08:00.0
Clocks
Graphics : 360 MHz
SM : 360 MHz
Memory : 405 MHz
Video : 540 MHz
Applications Clocks
Graphics : N/A
Memory : N/A
Default Applications Clocks
Graphics : N/A
Memory : N/A
Max Clocks
Graphics : 2145 MHz
SM : 2145 MHz
Memory : 7001 MHz
Video : 1950 MHz
Max Customer Boost Clocks
Graphics : N/A
SM Clock Samples
Duration : Not Found
Number of Samples : Not Found
Max : Not Found
Min : Not Found
Avg : Not Found
Memory Clock Samples
Duration : Not Found
Number of Samples : Not Found
Max : Not Found
Min : Not Found
Avg : Not Found
Clock Policy
Auto Boost : N/A
Auto Boost Default : N/A

[QIII]

Threads merged.

Please do not start duplicate threads. That waters down the community's efforts to help you since your answers maybe seen by different people, answered differently and cause duplication of effort.

If you have more information to provide, please do so in the original thread.

Thanks.