从17.04升级至17.10后屏幕黑屏问题求助

Hey there, sorry to hear you're stuck with a black screen after upgrading your Dell Vostro (Intel i3 + HD 520) to Ubuntu 17.10. This is a common issue with Intel Skylake graphics on older Ubuntu releases, and we can work through it step by step:

Step 1: Boot with Temporary Display Fixes #

First, let's get into the system temporarily by adjusting GRUB boot parameters:

• When your laptop starts up, hold the Shift key to bring up the GRUB menu (if it doesn't show up automatically).
• Select your Ubuntu 17.10 entry, then press e to edit the boot command.
• Find the line starting with linux—look for the quiet splash part. Replace that with:

  nomodeset acpi_backlight=vendor quiet splash
  

• Press F10 to boot with these settings. If all goes well, you should reach the desktop.

Step 2: Permanently Fix the Graphics Drivers #

Once you're in the system, let's update and configure the Intel graphics drivers properly:

1. Open a terminal (press Ctrl+Alt+T), then run these commands to update your system packages:

   sudo apt update && sudo apt upgrade -y
   

2. Install the official Intel graphics tools and drivers:

   sudo apt install intel-microcode xserver-xorg-video-intel
   

3. Make the boot parameter fix permanent so you don't have to edit GRUB every time:
   • Open the GRUB config file:

     sudo nano /etc/default/grub
     

   • Find the line GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" and replace it with the parameter that worked for you in Step 1:

     GRUB_CMDLINE_LINUX_DEFAULT="nomodeset acpi_backlight=vendor quiet splash"
     

   • Save the file (press Ctrl+O, hit Enter, then Ctrl+X to exit nano), then update GRUB:

     sudo update-grub
     

Step 3: Try a Different Display Manager (If Needed) #

If the above steps don't resolve the issue, the default display manager (gdm3) might be conflicting with your hardware. Let's switch to lightdm:

• Install lightdm via terminal:

  sudo apt install lightdm
  

• When prompted during installation, select lightdm as your default display manager.
• Reboot your laptop—you should see the lightdm login screen instead of a black screen.

Bonus: Fix Screen Brightness Issues (If They Pop Up) #

If you can get into the system but have trouble with screen brightness, create a custom Xorg config for Intel graphics:

• Create a new config file:

  sudo nano /etc/X11/xorg.conf.d/20-intel.conf
  

• Paste the following content into the file:

  Section "Device"
      Identifier "Intel Graphics"
      Driver "intel"
      Option "Backlight" "intel_backlight"
  EndSection
  

• Save and exit, then reboot to apply the changes.

Give these steps a try—most users with your hardware setup resolve the black screen issue with Step 1 and 2. Let me know if you hit any snags along the way!

内容的提问来源于stack exchange，提问作者Pranav Bose