What should I do? I'm using a separate computer to post this thread.
Here's my system specs from February (I haven't changed my hardware since then, except installing nvidia-driver-390 that same month s which has worked fine):
System:
Kernel: 5.4.0-65-generic x86_64 bits: 64 compiler: gcc v: 9.3.0
Desktop: Xfce 4.14.2 tk: Gtk 3.24.13 info: xfce4-panel wm: xfwm4
dm: LightDM 1.30.0 Distro: Linux Mint 20.1 Ulyssa base: Ubuntu 20.04 focal
Machine:
Type: Desktop Mobo: ASUSTeK model: P8Z68-V LX v: Rev X.0x serial: <filter>
BIOS: American Megatrends v: 0401 date: 07/15/2011
CPU:
Topology: Quad Core model: Intel Core i5-2500K bits: 64 type: MCP
arch: Sandy Bridge rev: 7 L2 cache: 6144 KiB
flags: avx lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx bogomips: 26487
Speed: 1606 MHz min/max: 1600/3700 MHz Core speeds (MHz): 1: 1605 2: 1605
3: 1606 4: 1605
Graphics:
Device-1: NVIDIA GF116 [GeForce GTX 550 Ti] vendor: eVga.com.
driver: nouveau v: kernel bus ID: 01:00.0 chip ID: 10de:1244
Display: x11 server: X.Org 1.20.9 driver: modesetting unloaded: fbdev,vesa
resolution: 1920x1080~60Hz
OpenGL: renderer: NVCF v: 4.3 Mesa 20.2.6 direct render: Yes
Drives:
Local Storage: total: 931.51 GiB used: 561.49 GiB (60.3%)
Partition:
ID-1: / size: 915.40 GiB used: 561.49 GiB (61.3%) fs: ext4 dev: /dev/sda5
Sensors:
System Temperatures: cpu: 39.0 C mobo: N/A gpu: nouveau temp: 43 C
Fan Speeds (RPM): N/A gpu: nouveau fan: 1260
Repos:
No active apt repos in: /etc/apt/sources.list
Active apt repos in: /etc/apt/sources.list.d/official-package-repositories.list
1: deb http://packages.linuxmint.com ulyssa main upstream import backport
2: deb http://archive.ubuntu.com/ubuntu focal main restricted universe multiverse
3: deb http://archive.ubuntu.com/ubuntu focal-updates main restricted universe multiverse
4: deb http://archive.ubuntu.com/ubuntu focal-backports main restricted universe multiverse
5: deb http://security.ubuntu.com/ubuntu/ focal-security main restricted universe multiverse
6: deb http://archive.canonical.com/ubuntu/ focal partner