https://bugs.kde.org/show_bug.cgi?id=483094

--- Comment #89 from Arthur Helsftein Fragoso <[email protected]> ---
(In reply to Once Solemn from comment #88)
> (In reply to Nate Graham from comment #81)
> > With 82% of telemetry-using Plasma users on Wayland, and KWin now split
> > between Wayland and X11, X11 is going into formal maintenance-only mode now,
> > so I'm downgrading the priority of this X11-only bug.
> 
> I'm confused. This bug still happens, for me, on Wayland. Nothing has
> changed since I reported this back in 2024.
> I can't test on 6.4, but I can confirm it still happened on 6.3.5.
> Interestingly, when I woke the screen on Wayland, the sound for "unplugging"
> and "plugging in" something played (like, if you connect a USB flash drive).

The error you were getting from "journalctl --user -r" is different than the
error people with NVIDIA were having.

I was getting:
> kscreenlocker_greet[133962]: Graphics device lost, cleaning up scenegraph and 
> releasing RHI
> kscreenlocker_greet[133962]: QRhiGles2: Context is lost.

And your output were:
(In reply to Once Solemn from comment #50)
> kscreenlocker_greet[17494]: pam_unix(kde:auth): authentication failure; 
> logname=user uid=1000 euid=1000 tty= ruser= rhost=  user=user
> org_kde_powerdevil[1355]: dh=Display_Handle[i2c-4: fd=27], Keeping adjusted 
> sleep multiplier 2,00 for SE_POST_WRITE or SE_POST_SAVE_SETTINGS
> org_kde_powerdevil[1355]: Executed 1 registered callbacks.
> org_kde_powerdevil[1355]: Emitting DDCA_Display_Status_Event( 10917.059:  
> DDCA_EVENT_DPMS_AWAKE, card0-DP-1, dref: Display_Ref[bus /dev/i2c-4], 
> io_path:/dev/i2c-4]
> org_kde_powerdevil[1355]: stabilized_connector_names required 1 extra calls 
> to get_sysfs_drm_connector_names()
> kscreenlocker_greet[17494]: 
> file:///usr/share/plasma/shells/org.kde.plasma.desktop/contents/lockscreen/MediaControls.qml:31:13:
>  QML Image: Blocked request.
> kscreenlocker_greet[17494]: qt.gui.imageio: libpng warning: iCCP: known 
> incorrect sRGB profile
> kscreen_backend_launcher[1442]: kscreen.xrandr: Emitting configChanged()
> plasmashell[1273]: qt.gui.imageio: libpng warning: iCCP: known incorrect sRGB 
> profile
> plasmashell[1273]: qt.gui.imageio: libpng warning: iCCP: known incorrect sRGB 
> profile
> kscreen_backend_launcher[1442]: kscreen.xrandr: Output 87 : connected = false 
> , enabled = false

It seems to me it is complaining about a PNG having the incorrect color profile
and being blocked.
> MediaControls.qml:31:13: QML Image: Blocked request.

>  Image {
>      id: albumArt
>      Layout.preferredWidth: height
>      Layout.fillHeight: true
>      visible: status === Image.Loading || status === Image.Ready
>      asynchronous: true
>      fillMode: Image.PreserveAspectFit
>      source: model.artUrl
>      sourceSize.height: height * Screen.devicePixelRatio
>  }

This seems to be the albumArt of the music player.

Ksenia Turek from comment #24:
> I can confirm that the bug still happens on Plasma version 6.1.4.
> I also found a simple temporary workaround.
> 
> I commented out the entire Image object with id: albumArt, starting at line 
> 31 in the file

you tried at comment #30:
> I installed F40 to test the "solution" in Comment 24, but that file doesn't 
> exist on this install.

I would say, check what you are currently getting with "journalctl --user -r",
if it shows the same MediaControls.qml message, try to locate that file and
comment out the Image object.

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