6900XT gamemode settings

6900XT Underwolt via gamemode

Install: mangohud gamemode

#You need to unlock the card for over/under-clocking work, add this as grub boot kernel argument:
amdgpu.ppfeaturemask=0xffffffff

#In OpenSUSE:
vim /etc/default/grub
GRUB_CMDLINE_LINUX_DEFAULT="mitigations=off amdgpu.ppfeaturemask=0xffffffff security=apparmor"

#Create and secure 1 directory to store 2 scrips:
mkdir /usr/bin/scripts/
chmod 700 /usr/bin/scripts
chmod 700 /usr/bin/scripts/*

#script1:
#Double check your cardid, it usually is card0 or card1, in my example its card1, adjust script accordingly

simrig:/usr/bin/scripts # cat undervolt-gamemode-before.sh 
#!/bin/bash
#The bellow is the underwolt line:
echo "vo -80" > /sys/class/drm/card1/device/pp_od_clk_voltage
echo "c" > /sys/class/drm/card1/device/pp_od_clk_voltage
#4 is the best performant one (VR)
echo "4" > /sys/class/drm/card1/device/pp_power_profile_mode
#fan:
echo "1" > /sys/class/drm/card1/device/hwmon/hwmon0/pwm1_enable 
echo "162" > /sys/class/drm/card1/device/hwmon/hwmon0/pwm1
simrig:/usr/bin/scripts # 

#script2:
simrig:/usr/bin/scripts # cat undervolt-gamemode-after.sh 
#!/bin/bash
echo "c" > /sys/class/drm/card1/device/pp_od_clk_voltage
echo "low" > /sys/class/drm/card1/device/power_dpm_force_performance_level
echo "2" > /sys/class/drm/card1/device/pp_power_profile_mode
cpupower frequency-set -g powersave

#fan:
echo "1" > /sys/class/drm/card1/device/hwmon/hwmon0/pwm1_enable 
echo "96" > /sys/class/drm/card1/device/hwmon/hwmon0/pwm1
simrig:/usr/bin/scripts # 

cp /usr/share/doc/packages/gamemoded/gamemode.ini /etc/
vim /etc/gamemode.ini

[custom]
; Custom scripts (executed using the shell) when gamemode starts and ends
#start=notify-send "GameMode started"
start=sudo /usr/bin/scripts/undervolt-gamemode-before.sh

#end=notify-send "GameMode ended"
end=sudo /usr/bin/scripts/undervolt-gamemode-after.sh

#Since the scripts run with sudo, add at the last visudo line:
slemke ALL=(root) NOPASSWD: /usr/bin/scripts/*

#Install mangohud
Start game on steam with:
gamemoderun mangohud %command%