How do I change the default grub settings and splash screen?

I wish to change a couple of boot settings like which kernel my Garuda instance boots with and customize some stuff like like the grub background and splash screen. I am using the KDE Dragonized version and the default ones are too edgy for me (Sorry dragonfire :P).

First of all, I am using a custom kernel which comes with some patches for my particular laptop. Every time I boot, I have to manually go to "Advanced options for Garuda" on Grub and select that particular kernel to boot. I have tried changing this in Garuda Boot Options, but it always boots with the default zen kernel anyway.

I haven't tried the GRUB customizer program as someone on forum said people have had issues after using it.

Secondly, I need to change the grub background image/theme. How do I go about doing that? Simply install some theme from internet and select the theme.txt file in Garuda Boot option?

Lastly, the splash screen. I thought the splash screen in KDE settings changed that. Turns out it's only for login splash. I have no idea how I go about installing some custom splash screen and setting it through garuda boot options.

╰─λ inxi -Faz
System:    Kernel: 5.14.15-arch1-g14-1 x86_64 bits: 64 compiler: gcc v: 11.1.0
parameters: pm_debug_messages amd_pmc.enable_stb=1 amd_pmc.dyndbg="+p" acpi.dyndbg="file
drivers/acpi/x86/s2idle.c +p" BOOT_IMAGE=/@/boot/vmlinuz-linux-g14
root=UUID=a12edf4b-f91d-4792-a992-2baac1ce3438 rw [email protected] quiet
root=/dev/mapper/luks-1f19efd7-c4e6-4eaf-accf-83d0acf1403e rd.udev.log_priority=3
vt.global_cursor_default=0 systemd.unified_cgroup_hierarchy=1 loglevel=3
Desktop: KDE Plasma 5.23.2 tk: Qt 5.15.2 info: latte-dock wm: kwin_x11 vt: 1 dm: SDDM
Distro: Garuda Linux base: Arch Linux
Machine:   Type: Laptop System: ASUSTeK product: ROG Zephyrus G14 GA401II_GA401II v: 1.0 serial: <filter>
Mobo: ASUSTeK model: GA401II v: 1.0 serial: <filter> UEFI: American Megatrends v: GA401II.219
date: 12/30/2020
Battery:   ID-1: BAT0 charge: 58.0 Wh (79.3%) condition: 73.1/76.0 Wh (96.2%) volts: 15.8 min: 15.8
model: ASUSTeK ASUS Battery type: Li-ion serial: N/A status: Not charging
Device-1: hidpp_battery_0 model: Logitech G304 Lightspeed Wireless Gaming Mouse
serial: <filter> charge: 55% (should be ignored) rechargeable: yes status: Discharging
CPU:       Info: 6-Core model: AMD Ryzen 5 4600HS with Radeon Graphics bits: 64 type: MT MCP arch: Zen 2
family: 17 (23) model-id: 60 (96) stepping: 1 microcode: 8600104 cache: L2: 3 MiB
flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3 svm bogomips: 71899
Speed: 3687 MHz min/max: 1400/3000 MHz boost: enabled Core speeds (MHz): 1: 3687 2: 3973
3: 1947 4: 2313 5: 3154 6: 3614 7: 2593 8: 3855 9: 2202 10: 2948 11: 2550 12: 3043
Vulnerabilities: Type: itlb_multihit status: Not affected
Type: l1tf status: Not affected
Type: mds status: Not affected
Type: meltdown status: Not affected
Type: spec_store_bypass mitigation: Speculative Store Bypass disabled via prctl and seccomp
Type: spectre_v1 mitigation: usercopy/swapgs barriers and __user pointer sanitization
Type: spectre_v2
mitigation: Full AMD retpoline, IBPB: conditional, IBRS_FW, STIBP: conditional, RSB filling
Type: srbds status: Not affected
Type: tsx_async_abort status: Not affected
Graphics:  Device-1: AMD Renoir vendor: ASUSTeK driver: amdgpu v: kernel bus-ID: 04:00.0
chip-ID: 1002:1636 class-ID: 0300
Display: x11 server: X.Org 1.20.13 compositor: kwin_x11 driver: loaded: amdgpu,ati
unloaded: modesetting alternate: fbdev,vesa display-ID: :0 screens: 1
Screen-1: 0 s-res: 1920x1080 s-dpi: 96 s-size: 508x285mm (20.0x11.2") s-diag: 582mm (22.9")
Monitor-1: eDP res: 1920x1080 hz: 120 dpi: 158 size: 309x174mm (12.2x6.9") diag: 355mm (14")
OpenGL: renderer: AMD RENOIR (DRM 3.42.0 5.14.15-arch1-g14-1 LLVM 12.0.1) v: 4.6 Mesa 21.2.4
direct render: Yes
Audio:     Device-1: AMD driver: snd_hda_intel v: kernel bus-ID: 04:00.1 chip-ID: 1002:1637 class-ID: 0403
Device-2: AMD Raven/Raven2/FireFlight/Renoir Audio Processor vendor: ASUSTeK driver: N/A
alternate: snd_pci_acp3x, snd_rn_pci_acp3x bus-ID: 04:00.5 chip-ID: 1022:15e2 class-ID: 0480
Device-3: AMD Family 17h HD Audio vendor: ASUSTeK driver: snd_hda_intel v: kernel
bus-ID: 04:00.6 chip-ID: 1022:15e3 class-ID: 0403
Sound Server-1: ALSA v: k5.14.15-arch1-g14-1 running: yes
Sound Server-2: JACK v: 1.9.19 running: no
Sound Server-3: PulseAudio v: 15.0 running: no
Sound Server-4: PipeWire v: 0.3.39 running: yes
Network:   Device-1: Intel Wi-Fi 6 AX200 driver: iwlwifi v: kernel bus-ID: 02:00.0 chip-ID: 8086:2723
class-ID: 0280
IF: wlp2s0 state: up mac: <filter>
Device-2: Realtek RTL8153 Gigabit Ethernet Adapter type: USB driver: r8152 bus-ID: 6-2.4:4
chip-ID: 0bda:8153 class-ID: 0000 serial: <filter>
IF: enp4s0f4u2u4 state: up speed: 100 Mbps duplex: full mac: <filter>
Bluetooth: Device-1: Intel AX200 Bluetooth type: USB driver: btusb v: 0.8 bus-ID: 5-4:4 chip-ID: 8087:0029
class-ID: e001
Report: bt-adapter ID: hci0 rfk-id: 0 state: down bt-service: enabled,running rfk-block:
hardware: no software: yes address: <filter>
Drives:    Local Storage: total: 953.87 GiB used: 172.3 GiB (18.1%)
SMART Message: Unable to run smartctl. Root privileges required.
ID-1: /dev/nvme0n1 maj-min: 259:0 vendor: Intel model: SSDPEKNW010T8 size: 953.87 GiB
block-size: physical: 512 B logical: 512 B speed: 31.6 Gb/s lanes: 4 type: SSD serial: <filter>
rev: 004C temp: 33.9 C scheme: GPT
Partition: ID-1: / raw-size: 953.61 GiB size: 953.61 GiB (100.00%) used: 172.3 GiB (18.1%) fs: btrfs
dev: /dev/dm-0 maj-min: 254:0 mapped: luks-1f19efd7-c4e6-4eaf-accf-83d0acf1403e
ID-2: /boot/efi raw-size: 260 MiB size: 256 MiB (98.46%) used: 706 KiB (0.3%) fs: vfat
dev: /dev/nvme0n1p1 maj-min: 259:1
ID-3: /home raw-size: 953.61 GiB size: 953.61 GiB (100.00%) used: 172.3 GiB (18.1%) fs: btrfs
dev: /dev/dm-0 maj-min: 254:0 mapped: luks-1f19efd7-c4e6-4eaf-accf-83d0acf1403e
ID-4: /var/log raw-size: 953.61 GiB size: 953.61 GiB (100.00%) used: 172.3 GiB (18.1%)
fs: btrfs dev: /dev/dm-0 maj-min: 254:0 mapped: luks-1f19efd7-c4e6-4eaf-accf-83d0acf1403e
ID-5: /var/tmp raw-size: 953.61 GiB size: 953.61 GiB (100.00%) used: 172.3 GiB (18.1%)
fs: btrfs dev: /dev/dm-0 maj-min: 254:0 mapped: luks-1f19efd7-c4e6-4eaf-accf-83d0acf1403e
Swap:      Kernel: swappiness: 133 (default 60) cache-pressure: 100 (default)
ID-1: swap-1 type: zram size: 15.05 GiB used: 0 KiB (0.0%) priority: 100 dev: /dev/zram0
Sensors:   System Temperatures: cpu: 56.6 C mobo: 56.0 C gpu: amdgpu temp: 49.0 C
Fan Speeds (RPM): cpu: 3300
Info:      Processes: 375 Uptime: 19m wakeups: 4 Memory: 15.05 GiB used: 3.44 GiB (22.8%) Init: systemd
v: 249 tool: systemctl Compilers: gcc: 11.1.0 clang: 12.0.1 Packages: pacman: 1422 lib: 352
Shell: fish v: 3.3.1 default: Zsh v: 5.8 running-in: konsole inxi: 3.3.08

Defining new default kernel has some known bugs with btrfs (if you search in the forum you'll find several topics about it).
So, you should edit /etc/default/grub and change GRUB_DEFAULT=0 (which is the first line you see in the GRUB) to e.g. GRUB_DEFAULT=1 (second line) or whatever else, also in sub-menu you can use e.g. GRUB_DEFAULT="1>2" (third line in second line submenu).
You should also comment out GRUB_SAVEDEFAULT, e.g.


Pay attention, sometimes some parameters (e.g. GRUB_DEFAULT) might appear more than once in the grub file).
Then update-grub of course.


Go to app search interface and type : "garuda boot options"

now if you want to change entirely the grub theme go to kde grub themes store and download only themes with contains script (you will don't need configure yourself anything )




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This worked. Thank you.
I am assuming the Boot Options GUI need some fixing done.

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Thank you for the link. Understood how it works.

While you didn't mention it, came to know from the link itself the splash screen I see is called plymouth. Changed it to some minimal kind now. Thanks.

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