Change user grub settings to 1920x1080 if available

Right now Matter only works properly on a 1920x1080 grub screen.

When a user runs set-matter.sh the script should detect if the resolution 1920x1080 would be available (is listed when running vbeinfo on grub terminal), and if so, change the GRUB_GFXMODE property in /etc/default/grub to 1920x1080. If 1920x1080 is not available, cancel the installation.

Read this short wiki page before starting https://github.com/mateosss/matter/wiki/Considerations

Be sure to ask in the comments for any questions!

[GMFranceschini]

My bad, executing update-grub worked after setting the right resolution. Looks still a little bit too zoomed but definitely ok. I add the file anyway, maybe it can help:

# If you change this file, run 'update-grub' afterwards to update
# /boot/grub/grub.cfg.
# For full documentation of the options in this file, see:
#   info -f grub -n 'Simple configuration'

GRUB_DEFAULT=0
GRUB_TIMEOUT_STYLE=hidden
GRUB_TIMEOUT=10
GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
GRUB_CMDLINE_LINUX=""

# Uncomment to enable BadRAM filtering, modify to suit your needs
# This works with Linux (no patch required) and with any kernel that obtains
# the memory map information from GRUB (GNU Mach, kernel of FreeBSD ...)
#GRUB_BADRAM="0x01234567,0xfefefefe,0x89abcdef,0xefefefef"

# Uncomment to disable graphical terminal (grub-pc only)
#GRUB_TERMINAL=console

# The resolution used on graphical terminal
# note that you can use only modes which your graphic card supports via VBE
# you can see them in real GRUB with the command `vbeinfo'
GRUB_GFXMODE="1920x1080x32"

# Uncomment if you don't want GRUB to pass "root=UUID=xxx" parameter to Linux
#GRUB_DISABLE_LINUX_UUID=true

# Uncomment to disable generation of recovery mode menu entries
#GRUB_DISABLE_RECOVERY="true"

# Uncomment to get a beep at grub start
#GRUB_INIT_TUNE="480 440 1"
GRUB_THEME="/boot/grub/themes/Matter/theme.txt"

[mateosss]

Working now.