https://bugs.kde.org/show_bug.cgi?id=515550

--- Comment #11 from Frederick Zhang <[email protected]> ---
It seems the issue has been fixed somehow, although the two MRs are still open.
I tested both internal screen + battery and external displays + charger, and it
lit up just fine after a single key press or WoL.

I did a quick search `journalctl --since 2026-02-06 --grep 'dpms mode failed'`
and the last hit was on 15 Feb. Both systemd and nvidia-utils were last
upgraded before this. I still see 'Atomic modeset test failed! Permission
denied' logs though.

I'm not exactly sure what changed. I didn't touch any relevant configurations
so it's probably one of the package upgrades, and the only major upgrades I got
after 15 Feb were the KDE/Qt ones.

KDE Plasma Version: 6.6.0
KDE Frameworks Version: 6.23.0
Qt Version: 6.10.2
Kernel Version: 6.18.9-arch1-2 (64-bit)
Graphics Platform: Wayland

Were there any other patches that could have fixed this potentially?

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