Linux Mint因显卡驱动故障无法启动，无法进入登录界面求助

Hey there, let’s work through this issue together—your English is totally fine, no worries at all. The "running in software rendering mode" message tells us the system isn’t using your hardware graphics driver, which is almost certainly tied to why you can’t reach the normal login screen. Here are the most common fixes to try from recovery mode:

1. Fix Graphics Driver Issues (Most Likely Cause) #

Software rendering mode kicks in when the system can’t load your GPU’s proprietary or open-source driver. Here’s how to resolve this:

• First, make sure your system partition is mounted as read-write (recovery mode defaults to read-only):

  mount -o remount,rw /
  

• Enable network access (you’ll need this to download drivers):
  • If you’re in the recovery mode menu, select Enable networking and follow the prompts.
  • If you’re in a command line, run dhclient to get an IP address.
• Now, reinstall or update your graphics driver based on your GPU type:
  • NVIDIA GPUs:
    1. Uninstall any broken NVIDIA drivers first:

       sudo apt purge nvidia*
       

    2. Install the recommended driver:

       sudo ubuntu-drivers autoinstall
       

  • AMD GPUs:

    sudo apt install --reinstall xserver-xorg-video-amdgpu mesa-vulkan-drivers
    

  • Intel GPUs:

    sudo apt install --reinstall xserver-xorg-video-intel mesa-vulkan-drivers
    

• Reboot your system normally with sudo reboot and check if the login screen appears.

2. Repair the Display Manager #

The display manager (like LightDM, used by most Mint editions) might be corrupted, preventing the login screen from loading:

• Reinstall the display manager:

  sudo apt install --reinstall lightdm
  

• Set it as the default display manager (follow the on-screen prompt to select LightDM):

  sudo dpkg-reconfigure lightdm
  

• Reboot with sudo reboot to test.

3. Fix a Corrupted Desktop Environment #

If your desktop environment (Cinnamon, MATE, Xfce) got damaged during the reboot, it could cause this issue:

• Reinstall your desktop environment (replace cinnamon-desktop-environment with mate-desktop-environment or xfce4-desktop-environment if you use those):

  sudo apt install --reinstall cinnamon-desktop-environment
  

• Reboot and check if the login screen works.

4. Check System Logs for Clues (If Above Steps Fail) #

If none of the above works, look at the Xorg display server logs to find specific errors:

cat /var/log/Xorg.0.log | grep -E "(EE|WW)"

This will show you error (EE) and warning (WW) messages that can point to the root cause (like a missing driver file or misconfigured display settings).

内容的提问来源于stack exchange，提问作者DataHearth