The following error just happened on my machine:

Seems something video related, I got a black screen but I could go to a tty and start a new session, not sure about what is going on.

ul 08 13:20:30 isengard kwin_wayland[2127]: kwin_scene_opengl: A graphics reset attributable to the current GL context occurred.
jul 08 13:20:30 isengard kernel: NVRM: Xid (PCI:0000:01:00): 13, pid='<unknown>', name=<unknown>, Graphics Exception: Shader Program Header 18 Error
jul 08 13:20:30 isengard kernel: NVRM: Xid (PCI:0000:01:00): 13, pid='<unknown>', name=<unknown>, Graphics Exception: ESR 0x405840=0x82040000
jul 08 13:20:30 isengard kernel: NVRM: Xid (PCI:0000:01:00): 13, pid='<unknown>', name=<unknown>, Graphics Exception: ESR 0x405848=0x80000000
jul 08 13:20:30 isengard kernel: NVRM: Xid (PCI:0000:01:00): 13, pid=30962, name=kscreenlocker_g, Graphics Exception: ChID 0041, Class 0000c797, Offset 00000000, Data 00>
jul 08 13:20:30 isengard kwin_wayland[2127]: BlurConfig::instance called after the first use - ignoring
jul 08 13:20:30 isengard kwin_wayland[2127]: KscreenConfig::instance called after the first use - ignoring
jul 08 13:20:30 isengard kwin_wayland[2127]: OverviewConfig::instance called after the first use - ignoring
jul 08 13:20:30 isengard kwin_wayland[2127]: ShakeCursorConfig::instance called after the first use - ignoring
jul 08 13:20:30 isengard kwin_wayland[2127]: SlideConfig::instance called after the first use - ignoring
jul 08 13:20:30 isengard kwin_wayland[2127]: SlidingPopupsConfig::instance called after the first use - ignoring
jul 08 13:20:30 isengard kwin_wayland[2127]: WindowViewConfig::instance called after the first use - ignoring
jul 08 13:20:30 isengard kwin_wayland[2127]: ZoomConfig::instance called after the first use - ignoring
jul 08 13:20:30 isengard rtkit-daemon[2087]: Supervising 9 threads of 6 processes of 1 users.
jul 08 13:20:30 isengard rtkit-daemon[2087]: Supervising 9 threads of 6 processes of 1 users.
jul 08 13:20:36 isengard systemd[1]: NetworkManager-dispatcher.service: Deactivated successfully.
jul 08 13:20:40 isengard kscreenlocker_greet[30962]: pam_systemd_home(kde:auth): New sd-bus connection (system-bus-pam-systemd-home-30962) opened.
jul 08 13:20:55 isengard pipewire[2077]: ALSA lib confmisc.c:165:(snd_config_get_card) Cannot get card index for %f
jul 08 13:20:55 isengard pipewire[2077]: spa.alsa: 'plug:{SLAVE="a52:0,'hw:%f,3'"}': playback open failed: Dispositivo inexistente
jul 08 13:20:55 isengard pipewire[2077]: mod.adapter: 0x5b5cb0e882b0: can't get format: Dispositivo inexistente
jul 08 13:20:55 isengard pipewire[2077]: mod.adapter: usage: node.name=<string>
jul 08 13:20:55 isengard wireplumber[2078]: wplua: [string "alsa.lua"]:182: attempt to concatenate a nil value (local 'node_name')
                                            stack traceback:
                                                    [string "alsa.lua"]:182: in function <[string "alsa.lua"]:175>
jul 08 13:20:55 isengard wireplumber[2078]: wplua: [string "alsa.lua"]:347: table index is nil
                                            stack traceback:
                                                    [string "alsa.lua"]:347: in function <[string "alsa.lua"]:333>

Is this a persistent issue, across reboots? Did this occur after doing something (eg: updating the system)?

Being a rolling release, sometimes bugs come, followed by updates, and bugs go.

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I moved to a LTS kernel and it seems to be gone.Linux isengard 6.6.40-1-lts Still observing.

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