Debain 12 Plasma 5 LTS Setup

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Debain 12 Plasma 5 LTS Setup

Install with minimal iso do not install any DE bare minimal setup
Do not set root password, this will allow user as sudo
Pre Install Setup

Create partitions for each drive before the install process

EFI partition for UEFI Boot drive 512MB type fat32 /dev/sda1
Root system partition remaining space type ext4 /dev/sda2
Home partition/drive space ssd /dev/sdb1
Swap space partiton 16GB type swap /dev/sdb2
Data drive 4TB hdd ext4 /dev/sdc1

Install as usual after creating partitions. Reboot.

fstab

The fstab file configures the mounted drives/partitions Obtain UUID for each drive/partiton on system.

lsblk -f

/etc/fstab

Root   UUID="" /               ext4    auto,noatime,errors=remount-ro 0  1
home   UUID="" /home           ext4    auto,noatime,nouser            0  1
Data   UUID="" /home/Data      ext4    auto,noatime,nouser            0  1
SWAP   UUID="" swap            swap    sw                             0  0
tmpfs          /tmp            tmpfs   auto,noatime,mode=1777         0  0

EXT4 options

Enable fast_commit journal option speed up FS writes

sudo tune2fs -O fast_commit /dev/sda2
sudo tune2fs -O fast_commit /dev/sdb1

Verify

sudo tune2fs -l /dev/sda2 | grep features

Update apt sources.list

  sudo nano /etc/apt/sources.list
  deb http://deb.debian.org/debian bookworm main non-free-firmware contrib non-free
  deb http://deb.debian.org/debian bookworm-updates main non-free-firmware contrib non-free
  deb http://security.debian.org/debian-security/ bookworm-security main non-free-firmware contrib non-free
  deb http://deb.debian.org/debian bookworm-backports main non-free-firmware contrib non-free
sudo apt update && upgrade
sudo reboot

Modprobe

/etc/modprobe.d
sudo nano /etc/modprobe.d/audio.conf

options snd_hda_intel power_save=0 power_save_controller=N

GPU /etc/modprobe.d/intel.conf

options i915 modeset=1 mitigations=off fastboot=1 enable_fbc=0 enable_psr=0 enable_guc=-1

After creating these files run

sudo update-initramfs -u

This wil update boot image to include the changes.
Reboot.

Install DE and apps

sudo apt install kde-plasma-desktop
after boot to desktop
edit the /etc/network/interfaces file as administrator: sudo nano /etc/network/interfaces remove any networks interfaces , interferes with network manager
Reboot

install some useful apps

apt install
ark kde-spectacle libreoffice libreoffice-kde5 okular okular-extra-backends python3-pyside2-qtgui python3-pyqt5.qtquick inkscape gimp kcalc kcolorchooser,muon,linux-cpupower minidlna xournalpp plasma-sdk qmlscene qml bleachbit handbrake handbrake-cli mpv mpv-mpris qt5-style-kvantum mame

Disable some uneeded system services

Disable ModemManager If you do not have a mobile broadband interface.

sudo systemctl disable ModemManager.service
sudo systemctl mask ModemManager.service

fwupd is a daemon allowing you to update some devices’ firmware, including UEFI for several machines.
Remove fwupd from boot

sudo systemctl disable fwupd.service
sudo systemctl mask fwupd.service

GPU-Manager is software that creates a xorg.conf for you. So running this in every boot is just overkill. You only need to run this if you change your GPU.

sudo systemctl disable gpu-manager.service
sudo systemctl mask gpu-manager.service

Apt-daily-upgrade solves long boot up time with apt-daily-upgrade.

sudo systemctl disable apt-daily.service
sudo systemctl disable apt-daily.timer
sudo systemctl mask apt-daily.timer
sudo systemctl disable apt-daily-upgrade.timer
sudo systemctl disable apt-daily-upgrade.service
sudo systemctl mask apt-daily-upgrade.service

Logical Volume Manager (LVM) is a device mapper framework that provides logical volume management.
Disable LVM

sudo systemctl disable lvm2-monitor.service
sudo systemctl mask lvm2-monitor.service

Better Pulse Audio Settings

/etc/pulse/daemon.conf

default-sample-format = float32le
default-sample-rate = 48000
alternate-sample-rate = 44100
default-sample-channels = 2
default-channel-map = front-left,front-right
default-fragments = 2
default-fragment-size-msec = 125
resample-method = soxr-vhq
avoid-resampling = yes

high-priority = yes
nice-level = -11
realtime-scheduling = yes
realtime-priority = 9
rlimit-rtprio = 9
daemonize = no

Optimize network MTU

The ping command will let you know if the packet was sent as more than one fragment with multiple header data attached.

ping -s 1472 -c1 espn.com

systemd-boot, replace grub, speeds up boot time.

systemd-boot loader - grub replacement

post-kernel-script

Custom scipt to update systemd-boot config files after kernel updates
Install systemd-boot loader

sudo bootctl install --path=/boot/efi

Root flags are same as grub options in /etc/default/grub

ROOTFLAGS="quiet apparmor=1 security=apparmor loglevel=3  mitigations=off udev.log_priority=3 resume=UUID=123"
ROOTFLAGS1="quiet apparmor=1 security=apparmor loglevel=3  mitigations=off udev.log_priority=3 resume=UUID=123 3"

After install and setup of systemd-boot run

sudo update-initramfs -u

This wil update systemd-boot config files.
Reboot.