Note that, the line that loads the kernel starts with linux. Now, add vga=ask at the end of the line that loads the kernel as shown in the screenshot below. To do that, go to the GRUB menu, select an entry and press e. The easy way to find the codes is to use vga=ask boot parameter when you boot into your operating system. ![]() Each of the supported screen resolution on your monitor has a unique decimal number. ![]() The vga kernel boot parameter accepts a code which represents the screen resolution. It will work on CentOS 7 and older Linux distributions very well. This is the traditional method of changing screen resolution using the Linux kernel boot parameter. Changing Screen Resolution Using vga Kernel Parameter: You can actually set the display resolution with Linux kernel boot parameters.In this article, I am going to show you how to set screen resolution using the kernel boot parameters on Linux. If this is the case for you, then there is a solution. ![]() You might be having a hard time changing the display resolution to the correct one once it has booted (especially in the Linux headless server operating systems). ![]() There are times when you boot into your favorite Linux distribution and the display resolution is set incorrectly.
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