Bug 459814

I have found this:

journalctl :
sept. 10 21:59:45 tuxmachine kded5[1708]: kscreen.kded: Config does not have at least one screen enabled, WILL NOT save this config, this is not what user wants.
sept. 10 22:04:36 tuxmachine kscreenlocker_greet[7254]: qt.qpa.wayland: Creating a fake screen in order for Qt not to crash

What do you mean with
> The mouse cursor only appears on the second monitor
? Is the monitor gone from display settings and no longer usable, or is it frozen but still detected?

Seem's to be a firefox issue because i have no crash since  i'm using chromium.

@Zamundaaa.

The  main monitor is  detected (config is possible with kcreen)  but  frozen. Wallpaper and widgets are visible but there is no mouse action.
The second  monitor remains usable but plasma  crashes  on exit session or reboot.
Sorry for my english.

I'm disappointed . I thought the problem solved by changing the browser but it came back after a few hours.

Please attach the output of
> journalctl --user-unit plasma-kwin_wayland --boot 0
once the problem happens

(In reply to Zamundaaa from comment #6)
> Please attach the output of
> > journalctl --user-unit plasma-kwin_wayland --boot 0
> once the problem happens


Thanks a lot.
After googling two hours i found  someone having the same issue , related  to 
 https://github.com/paulmcauley/klassy/issues/53

Sorry for the noise.

Ps :   The author  of  Klassy seem's to disagree :

" It is also Plasma as there were no problems in 5.25. I can't believe they have released a final 5.26 with whatever this change is! :(

Do you have a link to your bug report? "

@Zamundaaa.

The issue  remains even klassy application style removed.

[@tuxmachine ~]$ journalctl --user-unit plasma-kwin_wayland --boot 0

oct. 13 06:36:37 tuxmachine systemd[1566]: Starting plasma-kwin_wayland.service - KDE Window Manager...
oct. 13 06:36:37 tuxmachine systemd[1566]: Started plasma-kwin_wayland.service - KDE Window Manager.
oct. 13 06:36:37 tuxmachine kwin_wayland[1659]: No backend specified, automatically choosing drm
oct. 13 06:36:37 tuxmachine kwin_wayland[1659]: OpenGL vendor string:                   NVIDIA Corporation
oct. 13 06:36:37 tuxmachine kwin_wayland[1659]: OpenGL renderer string:                 NVIDIA GeForce RTX 3060 Ti/PCIe/SSE2
oct. 13 06:36:37 tuxmachine kwin_wayland[1659]: OpenGL version string:                  3.1.0 NVIDIA 515.76
oct. 13 06:36:37 tuxmachine kwin_wayland[1659]: OpenGL shading language version string: 1.40 NVIDIA via Cg compiler
oct. 13 06:36:37 tuxmachine kwin_wayland[1659]: Driver:                                 NVIDIA
oct. 13 06:36:37 tuxmachine kwin_wayland[1659]: Driver version:                         515.76
oct. 13 06:36:37 tuxmachine kwin_wayland[1659]: GPU class:                              Unknown
oct. 13 06:36:37 tuxmachine kwin_wayland[1659]: OpenGL version:                         3.1
oct. 13 06:36:37 tuxmachine kwin_wayland[1659]: GLSL version:                           1.40
oct. 13 06:36:37 tuxmachine kwin_wayland[1659]: Linux kernel version:                   6.0
oct. 13 06:36:37 tuxmachine kwin_wayland[1659]: Requires strict binding:                no
oct. 13 06:36:37 tuxmachine kwin_wayland[1659]: GLSL shaders:                           yes
oct. 13 06:36:37 tuxmachine kwin_wayland[1659]: Texture NPOT support:                   yes
oct. 13 06:36:37 tuxmachine kwin_wayland[1659]: Virtual Machine:                        no
oct. 13 06:36:38 tuxmachine kwin_wayland[1659]: kwin_xkbcommon: XKB: inet:323:58: unrecognized keysym "XF86EmojiPicker"
oct. 13 06:36:38 tuxmachine kwin_wayland[1659]: kwin_xkbcommon: XKB: inet:324:58: unrecognized keysym "XF86Dictate"
oct. 13 06:36:38 tuxmachine kwin_wayland_wrapper[1683]: (WW) Option "-listen" for file descriptors is deprecated
oct. 13 06:36:38 tuxmachine kwin_wayland_wrapper[1683]: Please use "-listenfd" instead.
oct. 13 06:36:38 tuxmachine kwin_wayland_wrapper[1683]: (WW) Option "-listen" for file descriptors is deprecated
oct. 13 06:36:38 tuxmachine kwin_wayland_wrapper[1683]: Please use "-listenfd" instead.
oct. 13 06:36:38 tuxmachine kwin_wayland[1659]: kwin_wayland_drm: Failed to create gamma blob! Argument invalide
oct. 13 06:36:38 tuxmachine kwin_wayland[1659]: kwin_wayland_drm: Failed to create gamma blob! Argument invalide
oct. 13 06:36:38 tuxmachine kwin_wayland_wrapper[1699]: The XKEYBOARD keymap compiler (xkbcomp) reports:
oct. 13 06:36:38 tuxmachine kwin_wayland_wrapper[1699]: > Warning:          Unsupported maximum keycode 708, clipping.
oct. 13 06:36:38 tuxmachine kwin_wayland_wrapper[1699]: >                   X11 cannot support keycodes above 255.
oct. 13 06:36:38 tuxmachine kwin_wayland_wrapper[1699]: Errors from xkbcomp are not fatal to the X server
oct. 13 06:36:55 tuxmachine kwin_wayland[1659]: kwin_wayland_drm: an error occurred while swapping buffers "EGL_BAD_SURFACE"

Thanks.

Looks relevant:

> oct. 13 06:36:55 tuxmachine kwin_wayland[1659]: kwin_wayland_drm: an error occurred while swapping buffers "EGL_BAD_SURFACE"

*** This bug has been marked as a duplicate of bug 459778 ***