sudo echo balanced > /sys/class/drm/card0/device/power_dpm_state
I tried it with sudo -i , su , sudo su
and when I search from dolphin, there is nothing in the /sys directory
This is what I get:
╰─λ sudo -i
[root@Austin-Inspiron-15-3567 ~]# sudo echo battery > /sys/class/drm/card0/device/power_dpm_state
-bash: /sys/class/drm/card0/device/power_dpm_state: Permission denied
I don’t see an error 
What does sudo cat /sys/class/drm/card0/device/power_dpm_state give you?
Sorry I just forgot to copy my error part, I have corrected it above
EDIT:
╰─λ sudo cat /sys/class/drm/card0/device/power_dpm_state
cat: /sys/class/drm/card0/device/power_dpm_state: No such file or directory
╭─austin@Austin in ~ took 1s
[🔴] × sudo touch /sys/class/drm/card0/device/power_dpm_state
touch: cannot touch '/sys/class/drm/card0/device/power_dpm_state': Permission denied
Thanks
To be sure, try also to execute it when the game is on, to be sure that the GPU is being used (that's why maybe that directory is not existing).
And as said, confirm the value with cat.
sorry for the confusion please have a look above, I get error when I try to execute it.
I tried but as you asked(while running the game) but still doesn't work!
EDIT:
pwd
/sys/class/drm/card0/device
this shows that the directory exits, and I can also access it through terminal, but even root previleges don't seem to work in that directory, and /sys dir appears empty in dolphin
In addition to the test above, trying when a game is on, you could try this one
https://askubuntu.com/questions/1226853/set-power-dpm-state-to-low-with-amdgpu-on-xubuntu-18-04
Yes I tried as you suggested while running the game but still I get same errors.
Thanks for the link.
Actually I was suggest to do this who had the same GPU and was running Arch: Reddit - Dive into anything
Thank You
Forgive me for this stupid test, but better than nothing ...
(too) long ago I had a similar permissions problem for something else, I don't remember exactly what, but it worked misteriously going to the directory and launching the command without path for the file (and without sudo, I'd say, since you're already root)
cd /sys/class/drm/card0/device/
echo balanced > power_dpm_state
Sadly it also didn’t work, I also tried moving it.
Could you please check if it is the case with you too in the same directory?
The entire /sys directory has the same issue, this is how the /sys directory looks in the dolphin:
But you can access the directory through terminal.
Thanks
Everything seems OK in Dolphin for me:
This is the root cause of the issue - you can’t write to a file that doesn’t exist.
Things being absent from /sys means that sysfs isn’t loaded or available - are you running a hardened kernel, for example, or have you made some other random change to your system?
You also forgot some pertinent information in your post that would tell us about your system. Hint: it begins with inxi .
╰─λ inxi -Faz
System: Kernel: 5.14.0-4-cacule x86_64 bits: 64 compiler: gcc v: 11.1.0
parameters: BOOT_IMAGE=/@/boot/vmlinuz-linux-cacule root=UUID=e665afea-6249-46e2-a56a-9037924055c3 rw
rootflags=subvol=@ cgroup_enable=memory swapaccount=1 quiet splash rd.udev.log_priority=3
vt.global_cursor_default=0 systemd.unified_cgroup_hierarchy=1 loglevel=3 radeon.si_support=0 amdgpu.si_support=1
amdgpu.dpm=0
Desktop: KDE Plasma 5.22.5 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: Dell product: Inspiron 15-3567 v: N/A serial: <filter> Chassis: type: 9 serial: <filter>
Mobo: Dell model: 0D53F5 v: A00 serial: <filter> UEFI: Dell v: 2.14.1 date: 05/06/2021
Battery: ID-1: BAT0 charge: 14.7 Wh (74.2%) condition: 19.8/41.4 Wh (47.8%) volts: 15.4 min: 14.8 model: SMP DELL VN3N047
type: Li-ion serial: <filter> status: Discharging
Device-1: hidpp_battery_0 model: Logitech Wireless Mouse serial: <filter> charge: 55% (should be ignored)
rechargeable: yes status: Discharging
CPU: Info: Dual Core model: Intel Core i5-7200U bits: 64 type: MT MCP arch: Amber/Kaby Lake note: check family: 6
model-id: 8E (142) stepping: 9 microcode: EA cache: L2: 3 MiB
flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx bogomips: 21599
Speed: 600 MHz min/max: 400/3100 MHz Core speeds (MHz): 1: 600 2: 600 3: 600 4: 600
Vulnerabilities: Type: itlb_multihit status: KVM: VMX disabled
Type: l1tf mitigation: PTE Inversion; VMX: conditional cache flushes, SMT vulnerable
Type: mds mitigation: Clear CPU buffers; SMT vulnerable
Type: meltdown mitigation: PTI
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 generic retpoline, IBPB: conditional, IBRS_FW, STIBP: conditional, RSB filling
Type: srbds mitigation: Microcode
Type: tsx_async_abort status: Not affected
Graphics: Device-1: Intel HD Graphics 620 vendor: Dell driver: i915 v: kernel bus-ID: 00:02.0 chip-ID: 8086:5916
class-ID: 0300
Device-2: AMD Sun XT [Radeon HD 8670A/8670M/8690M / R5 M330 / M430 / Radeon 520 Mobile] vendor: Dell driver: amdgpu
v: kernel alternate: radeon bus-ID: 01:00.0 chip-ID: 1002:6660 class-ID: 0380
Device-3: Realtek Integrated_Webcam_HD type: USB driver: uvcvideo bus-ID: 1-5:3 chip-ID: 0bda:5769 class-ID: 0e02
serial: <filter>
Display: x11 server: X.Org 1.20.13 compositor: kwin_x11 driver: loaded: modesetting unloaded: amdgpu display-ID: :0
screens: 1
Screen-1: 0 s-res: 1366x768 s-dpi: 96 s-size: 361x203mm (14.2x8.0") s-diag: 414mm (16.3")
Monitor-1: eDP-1 res: 1366x768 hz: 60 dpi: 101 size: 344x194mm (13.5x7.6") diag: 395mm (15.5")
OpenGL: renderer: Mesa Intel HD Graphics 620 (KBL GT2) v: 4.6 Mesa 21.2.1 direct render: Yes
Audio: Device-1: Intel Sunrise Point-LP HD Audio vendor: Dell driver: snd_hda_intel v: kernel alternate: snd_soc_skl
bus-ID: 00:1f.3 chip-ID: 8086:9d71 class-ID: 0403
Sound Server-1: ALSA v: k5.14.0-4-cacule 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: 0.3.34 running: yes
Network: Device-1: Qualcomm Atheros QCA9377 802.11ac Wireless Network Adapter vendor: Dell driver: ath10k_pci v: kernel
port: e000 bus-ID: 02:00.0 chip-ID: 168c:0042 class-ID: 0280
IF: wlan0 state: up mac: <filter>
Device-2: Realtek RTL810xE PCI Express Fast Ethernet vendor: Dell driver: r8169 v: kernel port: d000
bus-ID: 03:00.0 chip-ID: 10ec:8136 class-ID: 0200
IF: enp3s0 state: down mac: <filter>
IF-ID-1: anbox0 state: down mac: <filter>
Bluetooth: Device-1: Qualcomm Atheros type: USB driver: btusb v: 0.8 bus-ID: 1-8:5 chip-ID: 0cf3:e009 class-ID: e001
Report: bt-adapter ID: hci0 rfk-id: 2 state: down bt-service: enabled,running rfk-block: hardware: no software: yes
address: <filter>
Drives: Local Storage: total: 931.51 GiB used: 79.93 GiB (8.6%)
SMART Message: Unable to run smartctl. Root privileges required.
ID-1: /dev/sda maj-min: 8:0 vendor: Toshiba model: MQ01ABD100 size: 931.51 GiB block-size: physical: 4096 B
logical: 512 B speed: 6.0 Gb/s type: HDD rpm: 5400 serial: <filter> rev: 3D scheme: GPT
Partition: ID-1: / raw-size: 100 GiB size: 100 GiB (100.00%) used: 19.89 GiB (19.9%) fs: btrfs dev: /dev/sda2 maj-min: 8:2
ID-2: /boot/efi raw-size: 1024 MiB size: 1022 MiB (99.80%) used: 51.9 MiB (5.1%) fs: vfat dev: /dev/sda1
maj-min: 8:1
ID-3: /home raw-size: 100 GiB size: 100 GiB (100.00%) used: 3.8 GiB (3.8%) fs: btrfs dev: /dev/sda3 maj-min: 8:3
ID-4: /var/log raw-size: 100 GiB size: 100 GiB (100.00%) used: 19.89 GiB (19.9%) fs: btrfs dev: /dev/sda2
maj-min: 8:2
ID-5: /var/tmp raw-size: 100 GiB size: 100 GiB (100.00%) used: 19.89 GiB (19.9%) fs: btrfs dev: /dev/sda2
maj-min: 8:2
Swap: Kernel: swappiness: 133 (default 60) cache-pressure: 100 (default)
ID-1: swap-1 type: zram size: 11.44 GiB used: 0 KiB (0.0%) priority: 100 dev: /dev/zram0
ID-2: swap-2 type: partition size: 6 GiB used: 0 KiB (0.0%) priority: -2 dev: /dev/sda7 maj-min: 8:7
Sensors: System Temperatures: cpu: 43.0 C mobo: 42.0 C
Fan Speeds (RPM): cpu: 0
Info: Processes: 318 Uptime: 9h 49m wakeups: 4 Memory: 11.44 GiB used: 3.03 GiB (26.5%) Init: systemd v: 249
tool: systemctl Compilers: gcc: 11.1.0 clang: 12.0.1 Packages: 1532 pacman: 1514 lib: 390 flatpak: 9 snap: 9
Shell: fish v: 3.3.1 default: Zsh v: 5.8 running-in: konsole inxi: 3.3.06
EDIT:
I am just using linux-cacule
Guess what I’m going to ask you to try next. 
Try a different kernel? 
Try a standard kernel, e.g. linux or linux-lts.
__,,,,,,,_ austin@Austin-Inspiron-15-3567
_╓╗╣╫╠╠╠╠╠╠╠╠╠╠╠╠╠╕╗╗┐_ ------------------------------
╥╢╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╥, OS: Garuda Linux x86_64
╗╠╠╠╠╠╠╠╝╜╜╜╜╝╢╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠┐ Host: Inspiron 15-3567
╣╠╠╠╠╠╠╠╠╢╣╢╗╕ , `"╘╠╠╠╠╠╠╠╠╠╠╠╠╠╠╔╥_ Kernel: 5.13.13-arch1-1
╒╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╕╙╥╥╜ `"╜╠╬╠╠╠╠╠╠╠╠╠╠╠╥, Uptime: 4 mins
╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╗╥╥╥╥╗╗╬╠╠╠╠╠╠╠╝╙╠╠╣╠╠╠╠╢┐ Packages: 1515 (pacman), 9 (flatpak), 9 (snap)
╣╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╥╬╣╠╠╠╠╠╠╠╠╗ Shell: zsh 5.8
╒╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╗ Resolution: 1366x768
╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠ DE: Plasma 5.22.5
╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╬ ```"╜╝╢╠╠╡ WM: KWin
╒╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╣, ╘╠╪ WM Theme: Lightly
╞╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╢┐ ╜ Theme: Breeze Dark [Plasma], Dracula [GTK3]
`╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╗ Icons: Fluent-dark [Plasma], Fluent-dark [GTK2/3]
,╬╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠"╕ Terminal: konsole
╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╗ Terminal Font: Roboto Mono [GOOG] 10
╝^╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╝╣╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╡ CPU: Intel i5-7200U (4) @ 3.100GHz
╔╜`╞┘╢╛╜ ╡╢╠"╚╠╠╜╝┌╞╞"╢╠╠╠╠╠╠╠╠╠╠╣╩╢╪ GPU: AMD ATI Radeon HD 8670A/8670M/8690M / R5 M330 / M430 / Radeon 520 Mobile
╜╒" `╜ ` ╜╙╕ └╣╠╠╠╠╕ ╞╙╖ GPU: Intel HD Graphics 620
╠╠╠ Memory: 1511MiB / 11710MiB
╜
╭─austin@Austin in ~
╰─λ sudo -i
[sudo] password for austin:
[root@Austin-Inspiron-15-3567 ~]# sudo mv power_dpm_state /sys/class/drm/card0/device/
mv: cannot create regular file '/sys/class/drm/card0/device/power_dpm_state': Permission denied
[root@Austin-Inspiron-15-3567 ~]# mv power_dpm_state /sys/class/drm/card0/device/
mv: cannot create regular file '/sys/class/drm/card0/device/power_dpm_state': Permission denied
[root@Austin-Inspiron-15-3567 ~]# cd /sys/class/drm/card0/device/
[root@Austin-Inspiron-15-3567 device]# echo balanced > power_dpm_state
-bash: power_dpm_state: Permission denied
[root@Austin-Inspiron-15-3567 device]#
But the /sys directory does show up in Dolphin
Thank you
It shows up, but does it contain anything?
The /sys dir was there in the Dolphin already, but the contents didn't show up,
bu now after installing linux, all the contents show up!
But apparently I just rechecked now and found it empty in Dolphin empty,
it seems that after just boot the contents are visible, but after some time they vanish away in the dolphin,
And same is with linux-cacule !
But still I can't do anything in that dir even with root permissions?
/sys is the kernel's settings domain. you can't create files or directories there, even as root, because there aren't files and directories there - just the kernel.
Seems you're trying to adjust performance for your discreet GPU. That would likely be card1, not card0. If there's no 'file' for power_dpm_state, then the driver doesn't have that setting. I have an AMD Vega 54 and it does not have a power_dpm_state setting (because it's not a mobile variant, I imagine), for instance.
Wish I could explain Dolphin's behavior. That's just weird.