Comment 43 for bug 1724639

Hi John,

On 1 November 2017 at 17:08, John Roe <email address hidden> wrote:

> Can someone help me out how to do this edit. As I have never edited a GRUB
> before.I'm not even sure what the GRUB is
> If I press e is this giving me the GRUB?
>

I had that problem as well :) I'll do my best to explain things. If I
over-explain things, I apologise, if I under-explain things, ask me to
clarify things.

The Linux kernel is the very core of Linux, it handles the hardware on
behalf of the programs we want to run.

GRUB is the "Grand Unified Bootloader" GRUB is a rather accomplished system
to handle booting things - typically a Linux kernel or memtest86+.
It can do many things and even has a built-in scripting language for
flexibility. The manual can be found here:-
https://www.gnu.org/software/grub/manual/grub/grub.html#Top

With lubuntu, GRUB is used to load a Linux kernel. If you want to see the
GRUB menu when booting your computer, switch it on and press both SHIFT
keys down and you should see a menu. With at least these two options:
* Ubuntu
* Advanced Options for Ubuntu

If you highlight the "Ubuntu" option and press 'e' you will see a GRUB
script specific to that kernel. Most of that stuff can be ignored. The line
beginning with the word linux is the interesting one - see
https://www.gnu.org/software/grub/manual/grub/grub.html#linux for full
details. Basically, you can edit that line to send information to the
kernel or tell it to do something differently. For instance, I've been
doing that recently to stop the arguments quiet and splash being passed to
the kernel

If you want to run a different kernel to the default on your system, select
"Advanced Options for Ubuntu", you will get a list of available kernels you
can run them as-is or you can highlight your preferred kernel and press 'e'
if you want to change the parameters passed to the kernel.

> Where do I insert the Line GRUB_GFXPAYLOAD_LINUX=text?
> Do I then Ctrl_x and go to terminal to do the sudo bit?
> Or should I be editing a file from the terminal?
>
Eugene has already answered that :)

HTH,

Ian

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