How far is Plasma 6 with session restore on X11/Wayland 2026?

How far is Plasma 6 with session restore on both X11 and Wayland?

To be more exact, if I have 5 windows open of Kwrite and 3 of Gwenview, session set to “On last logout”, will those 8 windows be restored on reboot?

I have really missed this feature since Plasma 5.

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In my experience, on wayland with pretty much up to date Plasma (Non-beta on Arch), not for your specific applications but as someone that sometimes reboots, or shutdowns, with Browser, E-mail client, Dolphin and/or more accidentality other Windows still open.
They will be restored but on a Multi Monitor setup annoyingly not necessarily on the Monitor where they were.

That could be because I have set Plasma to initially open applications under my Mouse as a workaround for another issue I had in the past. But in my opinion that setting should only apply for (manually) starting not for a restore.

Not sure if the state of KDE session restore already matches the upcoming Wayland session restore protocol, though.

Look here

That is not a factor here, it seems to be how it works for most of us.

The finalized spec hopefully gets us proper screen and position, not just opening.

For me, session restore doesn’t seem to work well in my Plasma 5 setup, at least in 6 all my windows open, including browsers and their tabs.

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On X11 it should pretty much work the same as on Plasma 5

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Yes I saw Ff-based browsers and one (the last) Dolphin window restore fine on Plasma 6.3.6. They do save their state internally I guess, Gwenview and Kwrite don’t seem to? Maybe Plasma history settings?
I will test on X11 on 6.3.6 and let you know here.

6.7 auspices sound nice, hope the content is also re-opened.

5.27.12 (X11) could/can reopen in tiles, but it’s the position, not the actual tile state (snapped into), but the window is a floating window in the same position the tile was in the session before.

Although it didn’t log me out the first time on X11, and I forcefully had to. It restored the windows of said 2 applications on X11 after a reboot. It also restored them back in Wayland, although maximized.

I will prbb. lose them when I log out of Wayland. > Edit, yepp.