TOC: ragna | WB | PvP | equip | ignition | SW | calendar | latest update | latest rank

Saturn's chinese guide (reddit post)

Reference

TODO:

• endless 4*:
  • bast light/supp
  • persephone dark/debuff
  • mayahuel water/supp
  • hercules light/def
  • calchas light/att
  • pietas dark/att
  • agamemnon wood/debuff

Teams

SPACE WALK:

• puppets tierlist, puppets guide, saturn's guide v2, google sheet

• past ragna guides collection (direct link)

• CL1 Tiwaz: 1

• C2-N3 Anemone: 1, 2

• C2-N4 Morgan: 1, 2

• C2-N5 — Aria?: 1

• C2-N6 Nicole: 1, 2

• C2-N7 Iphis: 1

• C2-N8 Demeter: 1, 2, 3, 4: 1-Arhat, 2-Nirriti, 3-Leo, Virupa, Lupin

• cluster lord 2: Limos on tap only helped me immensely. Also with Lan Fei, both werent ignited but at +6. 3 attackers was more than enough for me and i had 4 green units , no Billy or Mars. Total power was 615k

Ragna Break (1 coin = 10 gold)

• vs dark / On Cloud Nine II, HenToPan, Inferno+rerun+burst, Salvation, VanishingTwin, SecretBride

• vs light / Angel of Light, Wounded Winner 2, Midnight summer dream, Childhood's end

• vs water / Christmas Carol, On cloud nine, Wounded Winner 3+alt, Restoration, Kyrie eleison, SummerShooters

• vs wood / Lifeblood KnightOfRose, EndlessValentine, Romeo&Juliet, EvilsUnderTheSun

• vs fire / Close to Nirvana, Wounded Winner, Reincarnation, Les miserables, Demeter

World Boss Teams (use 1x speed)

• 1° slot vs dark / Tiwaz, Phorcus+200m+Ram, Mircalla, S.Mars, Medusa, Iphis

• 2° slot vs light / Sunah, Deborah, Aurora king

• 3° slot vs water / Messier, Nicole, Methuselah, Kasumi, Salome

• 4° slot TESTING

• 5° slot vs fire / Sol, Wyatt/img upd/post, Cacus/img, Argos, Ziva, Tamamo

• 6° slot vs wood / Xenie/700mln, Nephthys + post, Heket, Daphnis, Pan

PvP Teams

Standard

• pvp top tiers 05/21

Endless duel

• google doc
  • must: davi, mona
  • 4hit tap: mech commander
  • 3hit tap: serket, goga, guardian legend, hot boxer, emerald rune
  • good+ignite: hecate, euros, poms, baphomet, green gron
  • good: bremen, cynthia, morgana, angel lot, blue girl, ptah
• frontier
• unlimited
• img 3-4*

• tips thread @moot

  The most efficient strategy for Endless is invest in 15 3* units, make them +6, and use them in your 4* lineup as well. 4* units will be the last units to be invested in, as it is quite expensive compared to 3* ignition.

  For compositions, you will see 3 Taunts, 3 Speed units, 3 units that heal, and a minimum of 3 attackers. This is already 12 units, and the last 3 units are usually a mix of debuffers/attackers. You will find what these units are simply by looking at the Popular Childs menu. Since 3* units are fairly limited, you will see 15 units immediately.

  Arguably, it’s not even worth it to invest in 3* ignition, but since Endless is a weekly reward, and let’s say you end up being in 2%, that’s 3k crystals every week, and in a year you would’ve accumulated 150k crystals. Considering Endless Duel is entirely dependent on RELATIVE performance, it is a game mode to see how well you can maximize your resource output.

Duel en garde tips

If you can win 9 or more times, buy tickets for sure.
7 and 8 wins are less rewarding but still worth it.
6 wins can be debated either way.
5 or fewer is a no.

At 9+ wins, you break even on the cost of the core materials and essentially get a free, improved 6% banner pull with an upside of a lot of onyx. At 7 and 8 wins, you don't make back the cost of the core materials, but I feel the 5* chance and onyx value make up for it.

Supporter & Debuffer Skill Effects Chart List

• google spreadsheet
• source reddit post

Equipment enhance system (post1, post2, g-sheet, images)

Priority

• High Priority

  • 2nd Slot Armor (Reduce Damage by X of STAT)
  • 2nd Slot Weapon (Add X of STAT to Damage OR add X% Damage)
  • 2nd Slot Accessory (Both S options are great)

• Medium Priority

  • 3rd Slot Armor (Recover X Damage as HP, Ignore DEF Offset)
  • 3rd Slot Weapon (Add Ignore Def)

Weapon

1. increase stats
   • S = bump HP/Atk/all
   • A = add %Atk>Hp, %Hp>Atk, bump Crt
   • B-E = add %X>Y
2. increase damage (PVE: add %>Damage, PVP: S-rank or attacking tap/slide add %X>Damage)
   • S = attacking add %>Damage OR add %X>Damage
   • A-E = attacking add %>Damage OR add %Hp-Atk-Def-Agl-Crt>Damage
3. recover Hp OR increase damage (PVE: ignore Def, PVP: ignore Def, recover %Dmg>Hp if needed)
   • S = attacking ignore Def offset OR attacking/defeat recover %Dmg>Hp/%MaxHp>Hp
   • A/C = attacking: ignore Def offset OR recover %Dmg>Hp
   • B/D = attacking ignore Def offset OR defeat recover %MaxHp>Hp

Armor

1. increase stats
   • S = bump HP/Def/all
   • A = add %Atk>Hp, %Hp>Def, bump Agl
   • B-E = add %X>Y
2. reduce damage (PVP: additionally reduce Damage)
   • S = reduce any attack % OR by %X
   • A = reduce tap/slide/drive % OR by %Hp
   • B = reduce tap/slide/drive % OR by %Atk
   • C-E = reduce tap/slide/drive % by %chance OR by %Def/Agl/Crt
3. recover Hp OR ignore Def offset (PVP: offset>recover)
   • S = recover % OR % by %chance OR ignore DEF offset
   • A-E = recover % by %chance OR ignore DEF offset

Accessory

1. increase stats
   • S = bump HP/Atk/Def/all
   • A = bump Crt/Agl OR add %Atk>Hp/Def, %Hp>Atk/Def
   • B-E = add %X>Y
2. increase buff/debuff/heal (PVP: S/E rank or aim for a specific bump)
   • S = bump debuff EVA/ACC %
   • A = bump Confuse/Sleep EVA/ACC %
   • B = bump Silence/Stun EVA/ACC %
   • C = bump Freeze/Petrify EVA/ACC %
   • D = bump Blind/DeathHeal EVA/ACC %
   • E = bump RecoveryBlock EVA/ACC % OR bump Heal/Regen %
3. increase skill/drive gauge (PVP: When hit by a Tap Skill)
   • S = attacking/attacked/defeat bump/reduce skill/drive gauge % by %chance
   • A/C = attacked/defeat bump drive gauge % by %chance
   • B/D/E = attacking/attacked reduce/bump skill gauge % by %chance

Ignition Cores guide, xls

legend: already ignited, 3x2 atk

ignition units suggestions must ignite, best child for core type:

Where to allocate the cores:

• quick guide A:

  • ATK is generally useful
  • CRT is useful for WB/ragna
  • AGL affects weak point dmg => is more useful for the character in ragna that hits during fever time
  • CRT/AGL are nerfed in PVP
  • HP is coveted for non-attackers in PVP, works well alongside DEF

• quick guide B:

  	Attacker	Debuffer	Supporter	Defender	Healer
  	Attacker	Debuffer	Supporter	Defender	Healer
  PVP	DEF / ATK / ATK	DEF / HP / ATK	DEF / HP / HP	DEF / HP / HP	DEF / HP / HP
  PVE	ATK / CRT / AGL	DEF / HP / HP	DEF / HP / HP	DEF / HP / HP	DEF / HP / HP
  *	ATK / CRT / DEF	DEF / HP / ATK	DEF / HP / HP	DEF / HP / HP	DEF / HP / HP

  stat = not essential but great to have

• quick guide C, the best ones are (per type):

  • ATK CRT CRT - god core for PVE % Slider (Pepita must-have)
    
  • DEF ATK ATK - god core for Endless Duel (Attacker)
    
  • AGL ATK ATK - god core for normal 6-sliders
    
  • CRT ATK ATK - god core for normal 6-sliders (Rank 2 for % Sliders)

• amp stats details

• debuffers often hit two or three times and can generally benefit from amplified ATK/AGL/CRT more than supporters, defenders, and healers.
• sometimes partial ignition is enough to greatly improve a child's skills (eg. 5 cores to L.Werewolf changes her defense down debuffs from flat amount to a percentage)

Really good cores:

Raid Stats

• Your Attacker at the very least should have AMP ATK and AMP CRT. The third slot is optimally another AMP ATK or AMP AGL. Pair with Pantheon or Melpomene, Newbie Mona for Aid boosts, followed by raid specific Childs.
• Forgot healing, you won't be needing it. Focus on DPS; doesn't matter whether you have 90% HP or 1% HP left, a one-shot is a one-shot. If you have Light Neptune, then you got both bases covered.

WB Stats

• Focus on Igniting 2 Attackers per element to launch your DPS. Focus on 6-hit sliders before moving onto 4-hit tappers
  • Fire: Myra, Courtesan Bathory, Sole Sword Tiamat
  • Water: Eve, Mafdet, Thanatos
  • Wood: Ayane, Daphnis, Pepita, Mech Commander
  • Light: Gunslinger Hildr, Overtaker Tiania
  • Dark: Ophois, Khepri
• Ignite Shrine Werewolf and Sweet Sytry (Light) to Level 5. Their debuff and buff, respectively, go from a flat number to percentage.
• Ignite 4* Calchas to level 5 Ignition to get another Dancing Blade. it stacks with Lady Bathory's Slide as well as Sunbeach Mona's Drive.

PVP Stats

• Courtesan Bathory is queen. Slide targets other attackers to nuke offensive teams, free bonuses without conditions, and a tap that boosts attack. Definitely a priority to Ignite. Recommend AMP DEF / AMP ATK / AMP ATK or AMP CRT (depending on Pantheon/Melpomene).
• A personal favorite of mine is Ignited Cube Moa (Light). Drive improves to hit 3 targets, Slide now has a 80% chance to reset skill gauges on top of petrifying for 3 hits instead of 2. A minor improvement at first sight, but can hugely delay the actions of the opposing team.
• Typical Cores should have AMP DEF and AMP ATK at the least. Attackers should have another AMP ATK or AMP CRT if Pantheon is on your squad. Every other unit could use more AMP DEF.
• It's difficult to Ignite specifically for PVP without getting in the way of other content. Unless you want to create another unit entirely to support that, it's a weighing decision dependent on how active you are in the top 100 of PVP. Collecting your 50 wins and cashing in free crystals and coins? Don't bother being fancy with AMP DEF cores. Want to consistently cash in a top 25 performance on a weekly level? Go ham.

Debuff/Evade reference

Due to the way debuff evasion works it actually can make a small amount of difference. Below is the calculation copied from the discord.

The gist of it is that a 6 star level 35+ unit has better accuracy than a 5 star level 50 unit. A 6 star level 60 unit will have 5% better accuracy in total.

Debuff hit-rate calculation: Final ACC - Final EVA = % chance to apply debuff

• Final ACC calculation:

  • Base ACC: 100% (if no % is specified in the skill)
    
  • ++ any ACC buffs (Slot 2 option, Kubaba tap etc)
    
  • -- any ACC debuffs (Altered Davi slide etc)
    
  • == Final ACC
    

• Final EVA calculation:

  • Base EVA : 10%
    
  • ++ any EVA buffs (Slot 2 option, various defender/healer skills, raidboss leader skill)
    
  • -- any EVA debuffs (various debuffer skills)
    
  • +- 3% per difference in evolution stars (gain EVA if target is higher star than debuffer, lose EVA if lower)
    
  • +- 0.2% per level difference (gain EVA if target is higher-leveled than debuffer, lose EVA if lower)
    
  • +- 10% weakpoint bonus (gain EVA if target strong against debuffer element, lose EVA if weak. Light vs Dark cancels this bonus out)
    
  • == Final EVA

Resources

• reddit saved posts
• discord channel
• characters reference: Wiki Glob / JP, DC DB
• spreadsheet (alt.link)
• moot.us forum
• coupon page
• --------------------------------------
• Rebirth Lab:
  • Team child formation for rebirth lv 5
  • Rebirth Labyrinth lvl 5 comp
  • Auto Mode Teams
  • Team you use
• Endless duel 3/4 list -- img
• Reddit: Community, PVP guide, ReikaMae
• gachagames guide
• Destiny Child Global Beginner's Guide!
• 3-4* child usability guide
• % damage
• official store
• dcgals @ thumbler
• Eri Uasguki's unc pics @pixiv

Soul Carta

• eve: angelic smile
• bathory: SOW
• chang'e e neptune: showtime
• dana: anniversary

Stacking of De/Buffs (post)

• De/Buffs with different icons will always stack.
• DE/Buffs with the same icon will override each other.
  The conditions are as follows:
  1. Buffs/debuffs from Drive Skills are considered to be in the highest tier, follow by Slide Skills, and lastly Tap Skills in the lowest tier.
  2. Higher tier buffs/debuffs will always override those from lower tiers. Lower tier buffs/debuffs will never override those from higher tiers and will simply be discarded.
  3. If the newly applied buffs/debuffs are in the same tier as the existing ones, the new one will always replace the old one regardless of whether the new one is stronger than the old one or not.
  4. Some exceptions are Regen buff and DoT debuffs (except Poison) which will stack.
• Leader Buff lasts the entire fight even if the leader is KO'ed, and will never be overridden. If a new buff/debuff with the same effect as the leader buff is applied, the effects will stack.

Tools/Extra

• artbooks DESTINY CHILD CHARACTER ARTWORKS 1 & 2: @ebay, @cdjapan
• MODs archive
  Transition screens can be found in files/ux/ci/img, they have three parts: left, center, and right, rename each frile extension from .png to .dcp. trans_06 is the SFW beach.
• Mods Wiki
• landascape mode + Rotation Control app
• game assets by ToxicWayz @ reddit, discord:ToxicWayz#6971
• decensor guide (2022-09)
• uncensor guide + data
• lokicoder's tools: live2d
• Hyung-tae Kim art, twitter account

Best level to farm

• 1-4.2 1* fire material, ragna tickets.
• 4-6.4: 2* childs, 2* fire material.

See also: gachazone.com, farm tables.

Crystal farming with Exploration -- post

HOR stats

Fill mileage gauge with failed attempts: 29x10% + 1x12.5% = 363 blood gems.

In my experience it's best to use 14x4* every time for a ~30% chance.

Best leveling areas (exp/stamina ratio)

Farm 5* fodder from 4*: evolve 4x non fire 4* along 1x 6* attacker via 30 battles (750 stamina) in hot time @ lvl 3-2-IV.8 on auto.

Alternatively to lvlup 4*: lvlup 3* on hot time to farm crystals and gold (see stats).

EVE adventure

What gear did you prioritize? How was your strategy?

def > atk > hp

also make sure you get at least a few rolls of agl, otherwise you'll be missing a ton towards the end

but most importantly, as long as you get enough def, everything becomes a cakewalk until maybe the final boss if you get unlucky with your rolls and don't feel like resetting

also, i found this guide a while back. there's a tab for eve's adventure or whatever it's called that shows you the weapon combinations, so you can patch up whichever stats you're lacking by prioritizing def or agl weapons like the spear or sword for example

top-tier equipment

• WEAPON: quintessential flask, passionate mic, bari's folding fan
• ARMOR: alchemist's gloves, enamel's suit, bari's shawl
• ACCESSORY: alchemy kit, hi-res headphones, bari's talisman of solace

Ragna Light Slime reflect counter

• Use PepitaTS (Counter attack)
• If Pepita still dying, add AuroraS / Wood VenusT (Ignore Reflect)
• S.HildrTS works too (Ranged Attack)
• So is LassiTS (Ignore Reflect)
• Or use Siren +6 (old method)

Ingredienti:

• 250gr mascarpone
• 100gr panna fresca
• 100gr latte condensato
• savoiardi sardi

Con questa crema fai gli strati, of course, con savoiardi sardi

Procedimento:

1. Montare la panna ed incorporare mascarpone e latte condensato
2. Stratificare la crema coi biscotti bagnati nel caffé
3. Mettere in frigo per un un'ora prima di servire.

bluetooth update

The first time you turn on the controller, it should enter pairing mode — the status light should flash orange. To enter pairing mode manually, hold the “Y + Stadia” buttons for 2 seconds. Once paired, the controller auto-connects to the last paired device when turned on.

What the status lights mean: * Flashing orange / Pairing mode, visible to other devices * Flashing white / Connecting to last paired device * Solid white / Connected to a device

flashing

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sudo bash

{ cat <<EOF
# SDP protocol
KERNEL=="hidraw*", ATTRS{idVendor}=="1fc9", MODE="0666"
ACTION=="add", SUBSYSTEM=="usb", ATTR{idVendor}=="1fc9", MODE="0666"
ACTION=="add", SUBSYSTEM=="usb", ATTR{idVendor}=="0d28", MODE="0666"
# Flashloader
KERNEL=="hidraw*", ATTRS{idVendor}=="15a2", MODE="0666"
# Controller
KERNEL=="hidraw*", SUBSYSTEM=="hidraw", ATTRS{idVendor}=="18d1", MODE="0666"
SUBSYSTEMS=="usb", ATTRS{idVendor}=="18d1", ATTRS{idProduct}=="9400", MODE="0660", TAG+="uaccess"
EOF
} | sudo tee /etc/udev/rules.d/70-stadiacontroller-flash.rules

udevadm control --reload-rules && udevadm trigger

references

• official reddit post
  • firmware bkup, on github

Table of contents:

1. Update raspbian linux to latest version
2. Change password, hostname, full xdm greeter
3. Configure a static IP address
4. Tune kernel settings
5. Tune video settings
6. Tune audio settings
7. Tune wifi settings
8. Tune eth settings
9. Remove tv black borders
10. Fix slow usb mouse
11. Reduce power consumption
12. Overclock
13. Extend lifespan of mechanical HDD
14. Extend lifespan of sdcard
15. Extend your RAM by enabling ZRAM
16. Setup a NAS (via NFS)
17. Setup a remote desktop (via VNC)
18. Setup a shared printer
19. Setup the firewall
20. SSH access and tunnels
21. Save external syslog
22. Enable bluetooth without WiFi
23. Dedicated posts:
    • Source a common bashrc for your users
    • Setup VeraCrypt volume manager
    • Setup Deluge torrent manager
    • Setup a DLNA media server
    • Setup Kodi media center
    • Setup a shared scanner
    • Setup an UPS monitor
    • Setup dnsmasq DNS server
    • Setup a freeDNS account
    • Setup a WebDav fileserver
    • Setup fail2ban to protect services
    • Setup a VPN to protect your privacy
    • Setup monitoring with Munin
    • Setup a good Screen config
    • Setup RetroPie
24. Tools
25. Backup
26. Miscellanea

Update raspbian linux to latest version:

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apt-get update
apt-get upgrade
apt-get dist-upgrade
apt-get clean
apt-get autoremove
rpi-update # update firmware & kernel

apt-get purge bash-completion     # speed up shell TAB-auto completion

# --- os version update, eg: from jessie (deb8) to stretch (deb9)
sed -i 's/jessie/stretch/g' /etc/apt/sources.list
sed -i 's/jessie/stretch/g' /etc/apt/sources.list.d/raspi.list
# repeat the commands above, then check the current version:
cat /etc/os-release

Debian 10 upgrade: see rpi blog post notes and comments.

Change password, hostname, full xdm greeter:

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sudo raspi-config # Change User Password; Hostname

# choose lightdm-gtk-greeter
sudo update-alternatives --config lightdm-greeter

Configure a static IP address (see also this and fallback method):

append the desired following blocks to /etc/dhcpcd.conf:

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interface eth0
fallback mylan

SSID my_wifi_ssid
fallback mylan

interface wlan0
fallback mylan

profile mylan
static ip_address=192.168.1.110/24
static routers=192.168.1.1
static domain_name_servers=84.200.69.80 37.235.1.174 84.200.70.40 37.235.1.177

Note: Do not use the directive inform 192.168.1.110 because it breaks the UPS monitor.

Optional do not wait for network at boot: run raspi-config and select Boot > Wait for Network at Boot > No.

Tune kernel settings

• Disable IPv6: append ipv6.disable=1 to kernel parameters in /boot/cmdline.txt or:

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# via sysctl:
echo "net.ipv6.conf.all.disable_ipv6 = 1" >> /etc/sysctl.d/local.conf
# via modprobe:
echo "blacklist ipv6" >> /etc/modprobe.d/local.conf

• Set autoreboot on kernel panic: append panic=5 to kernel parameters in /boot/cmdline.txt or via sysctl:

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echo "kernel.panic = 5" >> /etc/sysctl.d/local.conf

• better/visible boot messages: append consoleblank=0 plymouth.enable=0 to kernel parameters in /boot/cmdline.txt

• Remove tv black borders: set disable_overscan=1 in the /boot/config.txt.

• Fix slow usb mouse: append usbhid.mousepoll=0 to kernel parameters in /boot/cmdline.txt.

Tune video settings

Run raspi-config and in the Advanced Options section, if using a raspberry pi 4 then enable both the GL driver and the Compositor otherwise turn them off.

• Note: to ensure the loading of Pi4's VC4/GL driver make sure to uninstall Xorg frame buffer drivers:

  1 2	apt install xserver-xorg-video-vesa apt purge xserver-xorg-video-fbdev xserver-xorg-video-fbturbo

• Fix HDMI no signal

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# /boot/config.txt
hdmi_force_hotplug=1
config_hdmi_boost=6

• Fix Pi4's DRM mem error:

  1	DRM_IOCTL_MODE_CREATE_DUMB failed: Cannot allocate memory

  If you see the above error then use these /boot/config.txt settings:

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  # force HD, and prevent 4K memory drain (optional) hdmi_group=1 hdmi_mode=16 [hdmi:0] hdmi_max_pixel_freq=200000000 [hdmi:1] hdmi_max_pixel_freq=200000000 [pi4] # Enable DRM VC4 V3D driver on top of the dispmanx display stack (default driver) dtoverlay=vc4-fkms-v3d # number of active displays 1-2 max_framebuffers=1 # disable any memory split #gpu_mem=256

  and append cma=384M to /boot/cmdline.txt.

Tune audio settings

• fix robotic/metallic audio

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# add tsched=0 in /etc/pulse/default.pa on this line:
load-module module-udev-detect tsched=0

• disable microphone auto adjust (src1, src2, src3):

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cd /usr/share/pulseaudio/alsa-mixer/paths
tar -czvf ../paths.tgz .  # backup
perl -pi -0 -e 's/(\[[A-Za-z ]*(Mic Boost|Capture)\][A-Za-z._=\s-]+volume *= *)merge/\1zero/g;' *mic*.conf
shutdown -r 0

• to have a much better audio quality you can buy an usb soundcard (eg. PCM2704 DAC)

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# /etc/modprobe.d/local-audio.conf

# https://alsa.opensrc.org/MultipleCards#Reordering_the_driver_for_a_particular_card
options snd_bcm2835    index=0
# get vendor and product IDs via "lsusb" (my PCM2704 has 08bb:27c4)
options snd-usb-audio  index=2,3,4 vid=0x08bb,0x1395,0x046d pid=0x27c4,0x0025,0x0836

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# set default card in pulseaudio (taken from raspi-config script)
pulseaudio --check || pulseaudio -D
export XDG_RUNTIME_DIR=/run/user/`id -g`
pacmd list-sinks | grep -e index -e alsa.name  # identify your card number
pactl set-default-sink 3

Tune wifi settings

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# disable roaming
echo "options brcmfmac roamoff=1" >> /etc/modprobe.d/local.conf

# set correct regional domain
sed -i 's/REGDOMAIN=.*/REGDOMAIN=IT/' /etc/default/crda

# auto turn off power management
cd /etc/network/if-up.d/
echo -e '#!/bin/bash\n/sbin/iw dev wlan0 set power_save off' > local-wlan
chmod 755 local-wlan
# find an optimal MTU size via:
#   ping -c 2 -M do -s 1600 www.google.com
# then save it with:
echo "/sbin/ip link set dev wlan0 mtu 1400" >> local-wlan

Turn off bluetooth if unused, see this section.

Tune eth settings

• Disable eee Energy Efficient Ethernet support

  1	echo "dtparam=eee=off" >> /boot/config.txt

• Force eth0 speed to 100Mbs full duplex:

1. create a device tree file cm4-disable-gigabit-ethernet.dts:

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   /dts-v1/; /plugin/; / { /* Change the phy max-speed to 100 Mbps */ fragment@0 { target = <&phy1>; __overlay__ { max-speed = <100>; }; }; };

2. compile and install:

   1 2	sudo dtc -@ -Hepapr -I dts -O dtb -o /boot/overlays/cm4-disable-gigabit-ethernet.dtbo cm4-disable-gigabit-ethernet.dts echo "dtoverlay=cm4-disable-gigabit-ethernet" >> /boot/config.txt

Reduce power consumption:

put in /etc/rc.local:

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# turn off leds multiple times
(for i in 1 2 3 4 5; do
  for i in /sys/class/leds/led?; do
    echo none > $i/trigger
    echo 0    > $i/brightness
  done
  sleep 60
done) &

# disable HDMI output (and set boot to console via raspi-config)
/usr/bin/tvservice -o # -p to re-enable

set boot to console and reduce memory split:

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raspi-config # Boot Options > Desktop / CLI > Console
raspi-config # Advanced Options > Memory Split > 16

turn off unsued wlan/bluetooth (see /boot/overlays/README), put in /boot/config.txt:

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dtoverlay=disable-wifi
dtoverlay=disable-bt

and turn off the bluetooth services:

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systemctl disable hciuart
systemctl disable bluetooth

Overclock RPI4:

Add these lines in /boot/config.txt:

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arm_freq=2048
v3d_freq=750
over_voltage=6
hdmi_enable_4kp60=1

optionally set performance cpu governor:

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# /etc/rc.local
echo performance > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor

Extend lifespan of mechanical HDD:

put in /etc/hdparm.conf:

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/dev/sda {
  write_cache = on
  # -B -- disable Advanced Power Management
  apm = 254
  # -S -- 1h timeout
  spindown_time = 242
}

Extend lifespan of sdcard:

install my tmpfs-folders script and add a custom periodic cleaning of /var/log files in root crontab:

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#  m   h   dom   mon   dow   command
   0   0     *     *     3   /opt/systemd-units/clear_var_log.sh > /dev/null 2> /dev/null

Extend your RAM by enabling ZRAM (compressed RAM):

put in /etc/rc.local:

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if modprobe zram num_devices=1 ; then
  echo lz4  > /sys/block/zram0/comp_algorithm
  echo 384M > /sys/block/zram0/mem_limit
  echo 768M > /sys/block/zram0/disksize

  mkswap /dev/zram0
  swapon -p 10 /dev/zram0

  sysctl vm.swappiness=90
fi

and optionally disable dphys-swapfile swapfile service:

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systemctl disable dphys-swapfile

Setup a NAS (via NFS):

Server side commands:

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apt-get install nfs-kernel-server

systemctl enable rpcbind # it's disabled by default...
systemctl restart nfs-kernel-server

# add a share to /etc/exports
echo "/path 192.168.1.0/24(rw,sync,no_subtree_check,all_squash,anonuid=1001,anongid=1001)" >> /etc/exports

exportfs -ra # reload server

and append these lines to /ect/rc.local:

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# fix: nfs server doesn't start without rpcbind
systemctl start   rpcbind
systemctl restart nfs-kernel-server

Client side commands:

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echo "192.168.1.110:/path /mnt/path nfs defaults,user,exec 0 0" >> /etc/fstab
mount /mnt/path

Setup a remote desktop (via VNC):

You have three options:

1. Install the modern TigerVNC server, see the dedicated post
2. Use the lightdm TigerVNC service by enabling it in /etc/lightdm/lightdm.conf

3. Install the old TightVNC:

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   apt-get install tightvncserver # set a password and run a LQ server on display 1: vncpasswd vncserver -geometry 1024x768 -depth 8 :1 vncviewer server_ip:1 # connect from another host

Setup a shared printer:

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apt-get install cups
apt-get install hplip # HP printers drivers
hp-setup -i # install printer + dl drivers

elinks http://localhost:631
# Administration > Printers > Add printer
# Server settings > Share printers connected to this system

then turn the printer off and on again.

On Android you can install these apps: Let's print Droid, and Let's Print PDF.

Setup the firewall:

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apt-get install ufw

ufw reset # reset to defaults

ufw default deny  incoming
ufw default allow outgoing

ufw allow from 192.168.1.0/24 # your intranet
ufw allow from x.x.x.x        # a trusted IP
ufw limit 22/tcp              # max 6 new connections every 30 seconds
ufw limit 2200:2230/udp       # mosh port range
ufw allow 1810:1820/tcp       # bittorent - data
ufw allow 1810:1820/udp
ufw allow 6881:6891/tcp       # bittorent - tracker
ufw allow 6881:6891/udp
ufw allow 6771/udp            # bittorent - local peer discovery

ufw enable

SSH access and tunnels:

Here is an example for creating some simple forward tunnels while connecting to a remote server:

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# deluge thin client & web ui, vnc, nginx
ssh \
  -L 58846:localhost:58846 \
  -L 8112:localhost:8112   \
  -L 5901:localhost:5901   \
  -L 1234:localhost:1234   \
  user@server_addr

There are some great SSH clients as PuTTY for windows/linux and juiceSSH on Android.

Use mosh (even with juiceSSH!) to reliably connect from unstable or high latency networks:

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apt-get install mosh               # run this both on client and server
mosh -p 2200:2230 user@server_addr # connect to opened UDP ports on server

Read the dedicated post for an advanced tunnel usage.

Read the dedicated post to setup a SOCKS proxy with SSH.

Note: if sshd is slow to start at boot (systemd-analyze blame) then install haveged to have more entropy.

Save external syslog via rsyslog:

• enable tcp/udp ports, uncomment these lines in /etc/rsyslog.conf

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module(load="imudp")
input(type="imudp" port="514")

module(load="imtcp")
input(type="imtcp" port="514")

• filter and save remote logs by IP, create /etc/rsyslog.d/router.conf

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$template routerlog, "/var/log/router.log"

if $fromhost-ip startswith "192.168.1.1" then -?routerlog
& stop

• restart service

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systemctl restart rsyslog

• configure the device (eg. a router) to use your raspi IP as the remote syslog server

Enable bluetooth without WiFi

• disable WiFi by blacklisting its modules, add in /etc/modprobe.d/local-wifi.conf:

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blacklist brcmfmac
blacklist brcmutil

• set enable_uart=1 in /boot/config.txt
• ensure /boot/cmdline.txt contains this text in this exact order:

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console=serial0,115200 console=tty1

• enable services:

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systemctl enable hciuart
systemctl enable bluetooth

Dedicated posts:

• Source a common bashrc for your users
• Setup VeraCrypt volume manager
• Setup Deluge torrent manager
• Setup a DLNA media server
• Setup Kodi media center
• Setup a shared scanner
• Setup an UPS monitor
• Setup dnsmasq DNS server
• Setup a freeDNS account
• Setup a WebDav fileserver
• Setup fail2ban to protect services
• Setup a VPN to protect your privacy
• Setup monitoring with Munin
• Setup a good Screen config
• Setup RetroPie

Tools:

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apt-get install rpi-chromium-mods # video acceleration on google chrome
apt-get install remmina           # very handy VNC/SSH GUI
apt-get install omxplayer         # accelerated cli media player

• Fast/light web browsers:

  • kweb - raspberry pi's custom webkit build with omxplayer support
  • vivaldi - opera like browser
  • midori

• OMXplayer GUIs:

  • gomx -- light Python+Tk via python-omxplayer-wrapper

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  sudo apt install libdbus-1-dev libglib2.0-dev pip install omxplayer-wrapper wget -O ~/bin/gomx https://github.com/vladcc/gomx/raw/master/gomx/gomx.py chmod 755 ~/bin/gomx sed -i 's/^PL_WIN_PAD = .*/PL_WIN_PAD = 0/' ~/bin/gomx # adjust padding

  • tboplayer -- via pyomxplayer + youtube-dl + lyrics

• raspi-keygen -- Patch for MPEG-2, VC-1 license (untested, use it at your own risk)

  1 2	cd /boot && cp start.elf start.elf_backup && \ perl -pne 's/\x47\xE9362H\x3C\x18/\x47\xE9362H\x3C\x1F/g' < start.elf_backup > start.elf

• latest mkvtoolnix for raspbian

Backup:

You can do a full/raw sdcard backup, a live/tar one, or an incremental one.

As an alternative to 7za you can use xz just like the gz command (or use the -J option of tar).

Incremental backup commands

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# --- backup ----------------------------------------
cd /tmp && mkdir -p p1 p2
sudo mount -o ro /dev/sdc1 p1
sudo mount -o ro /dev/sdc2 p2

cd bkup-folder
sudo sfdisk -d /dev/sdc > ptable
mkdir -p p1 p2
sudo ribs -b --no-p p1 /tmp/p1
sudo ribs -b        p2 /tmp/p2

sudo umount /tmp/p?


# --- restore ---------------------------------------
cd bkup-folder

cd /tmp && mkdir -p p1 p2
sfdisk /dev/sdc < ptable
mkfs.vfat /dev/sdc1
mkfs.ext4 /dev/sdc2
sudo mount /dev/sdc1 p1
sudo mount /dev/sdc2 p2

sudo ribs -r p1 /tmp/p1
sudo ribs -r p2 /tmp/p2

cat ptable | grep label-id   # view old partition ID

# change to the new partition ID
sfdisk -d /dev/sdc | grep label-id
# update PARTUUID in p1/cmdline.txt 
# update PARTUUID in p2/etc/fstab

sudo umount /tmp/p?

Miscellanea:

• Fix TV/monitor not detected unless powered on first:

  1	sudo tvservice -d /boot/edid.dat

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  # /boot/config.txt hdmi_edid_file=1 hdmi_force_hotplug=1

• Test if we are on a raspberry (/sys, /proc/cpuinfo):

  1 2	cat /sys/firmware/devicetree/base/model # Raspberry Pi 3 Model B Rev 1.2 grep Hardware /proc/cpuinfo # Hardware : BCM2708

• To save space on new installs of ruby gems, put in ~/.gemrc:

  1 2	install: --no-rdoc --no-ri -​-no-document update: --no-rdoc --no-ri -​-no-document

  and to install a gem in the user $HOME use this command:

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  gem install --user-install bundler # remember to update your PATH adding this line to ~/.bashrc export PATH=$HOME/.gem/ruby/2.1.0/bin:$PATH

• If you have a logitech wireless keyboard (eg: K400+) then you can use solaar to query and configure it:

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  git clone https://github.com/pwr/Solaar.git cd Solaar/bin solaar show all solaar show 1 | grep Battery solaar config 1 fn-swap off # toggle function keys

• If you have a keyboard without the F# keys (like the kano keybord) you can emulate them with xdotool and then run it via xbindkeys:

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  sudo apt-get install xdotool xbindkeys xbindkeys-config xdotool key ctrl+alt+F1 # emulate these key press xbindkeys-config # create and save your bindings xbindkeys # run daemon

  or you can use xmodmap to remap existing keys:

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  xmodmap -pke | tee ~/.Xmodmap > ~/.Xmodmap-orig nano ~/.Xmodmap # edit keys xmodmap ~/.Xmodmap # load changes (run this on X startup)

  see Xorg keyboard references on the bottom.

• Autostart programs when loggin in LXDE: put your commands prefixed by @ in ~/.config/lxsession/LXDE-pi/autostart

• Change video mode/resolution without rebooting -- see rpi forum post

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# query available video modes
tvservice -m CEA
#Group CEA has 16 modes:
#           mode  4: 1280x720  @ 60Hz 16:9, clock:74MHz progressive 
#           mode 19: 1280x720  @ 50Hz 16:9, clock:74MHz progressive 
#  (prefer) mode 16: 1920x1080 @ 60Hz 16:9, clock:148MHz progressive 

# set custom video mode
tvservice -e "CEA 4 HDMI"
#fbset -depth 8 ; fbset -depth 16
fbset -g 1280 720 1280 720 16
xrefresh

# set default video mode
tvservice -p

• Android/LineageOS: images by Konsta, forum

• Zoom: arm port request, forum

• qpdfview a PDF viewer better than xpdf (modern GUI, fast render, page preload and cache)

Notes:

• Raspberry Pi 3 provides 1.2A USB current by default (no need to set max_usb_current=1 in /boot/config.txt). Of course a 2.5A PSU is mandatory.

Tips:

• SenseHAT: blog post
• hplayer (mplayer)
• SSHfs
• read-only sdcard: adafruits post from raspi post

Sources:

• power consumption: pidramble, jeffgeerling
• ZRAM: kernel, raspberry pi 3 gist, with-raspberrypi blog, stoned.io
• NFS server in Raspbian: can't connect
• Reduce SDcard wearing: stackexchange post e ramlog pkg
• Xorg keyboard: keysym list, xmodmap tutorials by xahlee and archlinux wiki
• upgrade raspbian8 to 9
• Fix wifi poor performance + turn power management off + optimize

To check

• app multi profiles:
  • Shelter -- Isolate and run multiple instances of apps using Work Profiles
  • MultiApp -- virtual Android container
• FP4 alt. camera
  • Secure Camera
  • Open Camera
  • GCam: wichaya, nikita
• MaterialFiles -- file manager
• Phonograph -- material music player
• games:
  • lemuroid -- libretro emulator
  • lightblocks -- tetris clone for any device

General

• Add Country Code -- fix contacts
• AfterShip -- post tracking
• AndrOpen Office -- libre office port
• BigSMS
• CalcTape
• Decathlon Coach -- home, esercizi da 10/15'/gg
• Event Flow Widget
• Firefox focus
• Google Drive -- copy to clipboard share option
• KeePassDroid
• Classic notes lite -- notepad on steroids
• Nova Launcher + TeslaUnread -- unread badges
• Lightning browser
• Off+ -- turn off screen hack
• OperaMini
• Pixeful icon pack -- inexpensive icon pack (usable with Nova launcher)
• Pl@ntNet -- plant recognition
• Power Toggles
• QR Droid -- bar/qrcode scanner
• Screen Off -- lock display widget
• Should I Answer? -- call spam blocker
• SMS Backup & Restore
• Sound Profile -- rich sound profile manager
• Sygic -- car navigator
• Sygic voice recorder -- own voice recorder
• Telegram -- IM
• Textra -- customizable SMS app
• TouchPal -- very customizable multi-mode keyboard
• Vuze -- torrent downloader
• WPS Office -- MSOffice compatible use AndrOpen Office

Media

• Boldbeast Recorder -- audio & call recorder
• BookReader -- ebook reader (epub, ecc)
• Camera FV-5
• Flym feed reader
• iMediaShare -- media caster
• YouTube Vanced -- YT ad free + background play
• Perfect Viewer -- image viewer
• Piktures -- simple & powerful gallery
• Pulsar -- music player
• Radio alarm clock++
• Radio FM Italia
• Simple Last.fm Scrobbler
• Smart Recorder -- audio recorder
• Snapseed -- rich image editor
• Sound Hound -- song search by your own whistles and voice!
• VLC -- rich video player + DLNA renderer

Games

• Alien Vs Space invaders
• Day Off
• Destiny Child -- dedicated post
• Deus Ex Go
• Dungeon cards
• GamePad Tester -- test controller
• GRIS
• Hearts Free
• Jelly Splash
• Lara Croft Go
• Picross Luna I & Picross Luna II
• Pigeon Pop, alt
• Progressbar95
• Puzzle Fighter
• Snes9x EX+
• --- to see ---
• Fist of the north star (Hokuto no Ken)
• Honkai Impact 3rd
• The King of Fighters ALLSTAR

System

• CPUz
• DavX5 -- CalDAV, CardDav sync
• DiskUsage -- xdiskusage port
• Hacker's Keyboard -- full PC keyboard
• JuiceSSH
• Let's Print Droid -- CUPS client
• Let's Print PDF
• Open in browser
• OpenVPN
• Override DNS
• QuickEdit Pro -- fast text editor
• Quick Sync widget -- sync Google account
• Remote Ripple -- vnc viewer
• SANEDroid -- SANE client
• Simple Mobile Tools -- replacements for all fundamental apps
• Termux
• Titanium backup
• Total commander -- rich file manager MC style
• Turbo VPN -- AD supported free VPN
• Wi-Fi on/off widget
• ZArchiver -- supports many archive types (7zip)

Home automation

• ~mydlink Home~ -- socket D-Link DSP-W215
• SmartLife -- rbg lamp LOFTer 10W
• TP-Link Tapo -- socket Tapo P100

Other lists: Retrial, Finalboss77