Ubuntu 20.04 can't find hwmatch

[nullmax]

After installing the grub theme, next boot grub show errors below:

error: can't find hwmatch
error: invalid arguments
press any key to continue:

Then jump to the default grub screen.

Setting GRUB_GFX_MODE didn't work.

Here is the system info:
OS: Ubuntu 20.04 LTS x86_64
Kernel: 5.4.0-31-generic
Resolution: 1920x1080
DE: GNOME
CPU: Intel i7-8750H (12) @ 4.100GHz
GPU: Intel UHD Graphics 630

[vinceliuice]

because your grub installation is incomplete, the hwmatch module is missing

[nullmax]

because your grub installation is incomplete, the hwmatch module is missing

I installed Ubuntu Minimal by default settings. I googled this problem, and not found a solution. Can you give me some suggestions?

[vinceliuice]

You should run sudo dpkg-reconfigure grub-pc and instruct it to install the boot loader somewhere, probably /dev/sda1.

[ghost]

Ubuntu 20.04 LTS
i experience same error too while changing background.jpg with Grub Customizer.

this is the error when i try to set .png files:

error: can't find command 'hwmatch'.
error: jpeg: invalid jpeg file.

press any key to continue...

this is the error when i try to set .jpg files:

error: can't find command 'hwmatch'.
error: invalid argument.

press any key to continue...

[vinceliuice]

If you want change the background, don't use this tool, just replace the jpg file

[vinceliuice]

Then run sudo update-grub

[ghost]

i try a few times... it's not working. but if i restore the original background.jpg the image is loaded and the error didn't show up. seems like i can't change the wallpaper for now.

[ghost]

btw i use your old theme (?) i can change the image by installing this theme (Vimix) from here:
https://drive.google.com/open?id=0B1tVpdpC9bZDLWxKVHBMQWRXU0U
and i successfully change the image using Grub Customizer with .png format

source: http://ubuntuhandbook.org/index.php/2017/06/vimix-grub2-theme-makes-ubuntu-boot-loader-look-prettier/

[nullmax]

I forget to mention that I run into this problem because I changed the backgroud image.
I tried to replace the picture before installation and replace the picture in /usr/share/grub/themes/Tela after installation. But all failed with the same error: can't find hwmatch.
Is it the problem of my own jpg file?

[vinceliuice]

Maybe, grub not support all type pictures

[ghost]

thanks @VergeDX i just open this now i think @vinceliuice don't want to fix this problem and i will update the theme right now see if the problem really fixed.

[ghost]

I can change the background on boot... you dont have to overwrite background.jpg
open boot/grub/themes/Tela (if you dont have Tela folder you maybe install the other theme) add another file for example background.png and open theme.txt change
-dekstop:image: "background.jpg" to -dekstop:image: "background.png"
And... done! the next restart you background will change.

[stuarthayhurst]

Is this issue sorted or still present? If it's fixed it can be probably be closed, otherwise I'll try look into it.

[ghost]

It's fixed... at least for me. Idk for other people.

[ghost]

Sorry I use other account... TvT