Linux Mint 18高负载下显示异常故障排查咨询

Hey there, let’s dig into this display artifact issue you’re facing on Linux Mint 18 when your CPU’s under heavy load. Since this doesn’t pop up on Windows, we can cross off hardware failure right away—great start! Let’s work through the most likely fixes step by step:

1. Check and Update Your Graphics Drivers #

Linux Mint 18 is getting pretty long in the tooth (it’s based on Ubuntu 16.04, which is end-of-life), so your default open-source graphics drivers might be out of date or not playing nice with your GPU. Here’s what to do:

• Open the Driver Manager (search for it in the system menu)
• Look for proprietary drivers matching your GPU (you mentioned lshw shows a VGA controller—match the product name here, like NVIDIA, AMD, or Intel)
• If a newer proprietary driver is listed, install it, then reboot. Proprietary drivers often handle high-load scenarios better than open-source alternatives for certain GPUs.

If you prefer the command line, list available drivers with:

ubuntu-drivers devices

Then install the recommended driver with:

sudo ubuntu-drivers autoinstall

2. Tweak or Disable the Desktop Compositor #

Compositors (like Marco for MATE or Compiz for Cinnamon) can glitch when CPU resources are stretched thin, leading to those ghosting/overlay issues. Try these quick tests:

• For Cinnamon: Head to System Settings > Window Management > Window Effects, then toggle off Enable desktop effects temporarily. See if the artifacts disappear when you push your CPU.
• For MATE: Go to System > Preferences > Look and Feel > Window Manager Tweaks > Compositor, uncheck Enable software compositing (or switch to hardware compositing if it’s an option).
• If disabling fixes the problem, you can try updating the compositor package or dialing down animation quality instead of turning effects off entirely.

3. Monitor for Overheating/Throttling #

High CPU load can trigger thermal throttling, which might make your GPU act erratically. Even though Windows doesn’t show this issue, Linux’s thermal management can be more aggressive. Let’s check temperatures:

• Install lm-sensors to track hardware temps:

  sudo apt install lm-sensors
  sudo sensors-detect
  sensors
  

• Run this while stress-testing your CPU (use the stress tool: sudo apt install stress && stress --cpu 4). If temps spike above 85°C, clean your device’s vents or replace thermal paste to improve cooling.

4. Update Your Kernel and System Packages #

Even though Mint 18 is end-of-life, there are still some hardware enablement updates available that might fix graphics bugs. Try installing the newer HWE kernel:

sudo apt update && sudo apt upgrade -y
sudo apt install linux-generic-hwe-16.04

This kernel includes better GPU support for newer hardware, which could resolve the load-related artifacts.

5. Test with a Lightweight Desktop Environment #

If none of the above works, try swapping to a lighter DE like Xfce to rule out issues with your current desktop’s graphics stack:

sudo apt install xfce4

Log out, select Xfce from the login screen, and test under high CPU load. If the artifacts are gone, the problem is specific to your original DE’s setup.

Quick heads-up: Since Linux Mint 18 stopped receiving updates in April 2021, upgrading to a supported release like Mint 21 is the most reliable long-term fix. Newer versions have updated graphics drivers and kernels that handle high-load scenarios way better.

内容的提问来源于stack exchange，提问作者Surfer on the fall