Ubuntu 22.04启动时Linux Kernel 5.15.0-86 generic黑屏故障求助

Hey there, sorry to hear you're stuck with this frustrating black screen issue—let's walk through some common causes and actionable fixes to get your system back on track!

可能的原因及解决办法 #

• 显卡驱动兼容性冲突
  Kernel 5.15.0-86 likely introduced a compatibility hiccup with certain graphics drivers, especially proprietary ones like NVIDIA's. Here's a quick test to confirm:

  1. When booting up, press the Shift key to bring up the GRUB menu (if it doesn't show up by default)
  2. Select the 5.15.0-86 kernel, press e to enter edit mode
  3. Find the line starting with linux, add nomodeset at the end of that line
  4. Press Ctrl+X to boot. If you can get to the login screen normally, the issue is driver-related. You can then try reinstalling or updating your graphics driver:
     For NVIDIA users, run this command (replace xxx with the driver version compatible with your GPU):

     sudo apt install nvidia-driver-xxx
     

• 显示管理器故障
  Ubuntu 22.04 uses gdm3 as the default display manager, and kernel updates can sometimes mess with its configuration. If you managed to get into the system with nomodeset, try reconfiguring gdm3:

  sudo dpkg-reconfigure gdm3
  

  Select gdm3 as the default display manager when prompted, then restart your system to see if the problem goes away.

• 内核模块异常
  A faulty kernel module (related to power management or graphics, for example) might be causing the blackout. If you can switch to a TTY screen (press Ctrl+Alt+F3 when the screen goes black), check the logs for clues:

  # 查看内核错误信息
  dmesg | grep -i error
  # 查看系统日志中与显示相关的问题
  cat /var/log/syslog | grep -i "black\|display"
  

  日志会帮你定位到具体是哪个模块或服务出了问题，方便针对性修复。

• 临时应急方案
  If you need a working system right away, you can stick with the stable 5.15.0-84 kernel and wait for a subsequent kernel update (like 5.15.0-87+) which might patch this bug:

  1. 进入GRUB的"Advanced options for Ubuntu"菜单
  2. 选择5.15.0-84内核启动
  3. 若要将其设为默认启动项，编辑GRUB配置：

     sudo nano /etc/default/grub
     

     将GRUB_DEFAULT修改为类似"1>2"的值（具体数字取决于5.15.0-84在高级菜单中的位置，通常是高级选项下的第二个条目），然后更新GRUB：

     sudo update-grub
     

备注：内容来源于stack exchange，提问作者196884e