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How to use nomodeset to Troubleshoot Boot Issues

by admin

“nomodeset” is a kernel boot parameter that can be used to resolve some boot-related problems on Linux systems. It is often used when the system is unable to display the graphical user interface (GUI) due to driver or hardware issues.

When “nomodeset” is added as a kernel boot parameter, it instructs the Linux kernel to disable the video mode setting (mode setting) during the boot process. This can help to prevent conflicts with video drivers that may be causing the boot failure, allowing the system to boot successfully into a basic graphical mode or console mode.

To use “nomodeset”, you can add the parameter to the boot options when starting your Linux system. The exact process may vary depending on your Linux distribution and bootloader, but generally, you can follow these steps:

1. First launch a terminal window.
(You can launch a terminal window like this: *Click*)

2. Then type in the terminal (use copy/paste):

xed admin:///etc/default/grub

Press Enter.

3. Find the following line:

GRUB_CMDLINE_LINUX=""

Replace it by this line:

GRUB_CMDLINE_LINUX="nomodeset"

Save the modified configuration file and close it.

4. Then run (note the dash in the command!):

$ sudo update-grub

5. Finally, reboot.

Once your system boots successfully using “nomodeset”, you can try to diagnose and fix the underlying issue that caused the boot failure. This may involve installing or updating video drivers, adjusting display settings, or replacing faulty hardware components.

Summary

“nomodeset” is a kernel boot parameter that is used on Linux systems to disable the video mode setting (mode setting) during the boot process. This parameter is often used to address issues related to graphics drivers or hardware that prevent the system from booting or displaying the graphical user interface (GUI).

Filed Under: Linux

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