After installing power-profiles-daemon if I try to access settings regarding power management I get this error. I get this in journal:

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Nov 02 18:16:02 ghoul kwin_x11[625]: qt.qpa.xcb: QXcbConnection: XCB error: 3 (BadWindow), sequence: 35501, resource id: 21109962, major code: 20 (GetProperty), minor code: 0
Nov 02 18:19:44 ghoul kwin_x11[625]: qt.qpa.xcb: QXcbConnection: XCB error: 3 (BadWindow), sequence: 43092, resource id: 21124693, major code: 20 (GetProperty), minor code: 0
Nov 02 18:20:27 ghoul systemd[559]: Started kcmshell5.
Nov 02 18:20:28 ghoul kcmshell5[11343]: kf.coreaddons.desktopparser: Error: Failed to open  "powerdevilprofilesconfig.desktop"
Nov 02 18:20:28 ghoul kcmshell5[11343]: QFileDevice::seek: IODevice is not open
Nov 02 18:20:28 ghoul kcmshell5[11343]: kf.coreaddons.desktopparser: Error: Failed to open  "powerdevilactivitiesconfig.desktop"
Nov 02 18:20:28 ghoul kcmshell5[11343]: QFileDevice::seek: IODevice is not open
Nov 02 18:20:28 ghoul kcmshell5[11343]: kf.coreaddons.desktopparser: Error: Failed to open  "powerdevilglobalconfig.desktop"
Nov 02 18:20:28 ghoul kcmshell5[11343]: QFileDevice::seek: IODevice is not open
Nov 02 18:20:28 ghoul kcmshell5[11343]: Icon theme "Numix-Circle" not found.
Nov 02 18:20:28 ghoul kcmshell5[11343]: kf.coreaddons: "Could not load plugin from /home/krillxox/powerdevilprofilesconfig.desktop"
Nov 02 18:20:28 ghoul kcmshell5[11343]: kf.coreaddons.desktopparser: Error: Failed to open  "kcms//home/krillxox/powerdevilprofilesconfig.desktop"
Nov 02 18:20:28 ghoul kcmshell5[11343]: QFileDevice::seek: IODevice is not open
Nov 02 18:20:28 ghoul kcmshell5[11343]: kf.coreaddons: "Could not load plugin from /home/krillxox/kcms/home/krillxox/powerdevilprofilesconfig.desktop"
Nov 02 18:20:28 ghoul kcmshell5[11343]: kf.kwidgetsaddons: KPageWidgetItem::setHeader() called with empty non-null string, which is deprecated. Use KPageWidgetItem::setHeaderVisible(false) instead.
Nov 02 18:20:28 ghoul kcmshell5[11343]: kf.coreaddons: "Could not load plugin from /home/krillxox/powerdevilactivitiesconfig.desktop"
Nov 02 18:20:28 ghoul kcmshell5[11343]: kf.coreaddons.desktopparser: Error: Failed to open  "kcms//home/krillxox/powerdevilactivitiesconfig.desktop"
Nov 02 18:20:28 ghoul kcmshell5[11343]: QFileDevice::seek: IODevice is not open
Nov 02 18:20:28 ghoul kcmshell5[11343]: kf.coreaddons: "Could not load plugin from /home/krillxox/kcms/home/krillxox/powerdevilactivitiesconfig.desktop"
Nov 02 18:20:28 ghoul kcmshell5[11343]: kf.kwidgetsaddons: KPageWidgetItem::setHeader() called with empty non-null string, which is deprecated. Use KPageWidgetItem::setHeaderVisible(false) instead.
Nov 02 18:20:28 ghoul kcmshell5[11343]: kf.coreaddons: "Could not load plugin from /home/krillxox/powerdevilglobalconfig.desktop"
Nov 02 18:20:28 ghoul kcmshell5[11343]: kf.coreaddons.desktopparser: Error: Failed to open  "kcms//home/krillxox/powerdevilglobalconfig.desktop"
Nov 02 18:20:28 ghoul kcmshell5[11343]: QFileDevice::seek: IODevice is not open
Nov 02 18:20:28 ghoul kcmshell5[11343]: kf.coreaddons: "Could not load plugin from /home/krillxox/kcms/home/krillxox/powerdevilglobalconfig.desktop"
Nov 02 18:20:28 ghoul kcmshell5[11343]: kf.kwidgetsaddons: KPageWidgetItem::setHeader() called with empty non-null string, which is deprecated. Use KPageWidgetItem::setHeaderVisible(false) instead.
Nov 02 18:20:30 ghoul kwin_x11[625]: qt.qpa.xcb: QXcbConnection: XCB error: 3 (BadWindow), sequence: 53042, resource id: 106954774, major code: 18 (ChangeProperty), minor code: 0

Here it is video of it how it shows: https://imgur.com/a/S75vFkB

What am I supposed to see in that video? it is a bit tiny...

FWIW: if you have an AMD CPU the power profiles will not work anyway: https://gitlab.freedesktop.org/hadess/p ... /issues/50

Thanks for reply

What am I supposed to see in that video? it is a bit tiny...

https://imgur.com/a/Zlyzhtj
Here is clear screenshot of error. It's sayin' about modules. I made sure to remove tlp and autocpu-freq before installing power-profiles-daemon but I've no clue now. Also there is journal of it.
I've intel i5-7200u
OS: Arch Linux x86_64
Kernel: 5.14.14-arch1-1
DE: Plasma 5.23.2
WM: KWin
CPU: Intel i5-7200U (4) @ 2.500GHz
GPU: Intel HD Graphics 620
GPU: NVIDIA GeForce 920M

Well, maybe talk to your distribution, as this is most likely a distribution specific issue.