Arch Linux

steph44

Member

Registered: 2025-10-24

Posts: 4

[SOLVED] Some issues after KDE 6.8 update

After full update today with KDE 6.8, some ussues appeared.

- A virtual keyboard is appearing on the login manager. It's a little annoying.

- No more X11 session on the login manager. I was used to use wayland, but recently conky has some issues with wayland, so I switched back to the X11 session, and I can't anymore.

- Vivaldi doesn't follow anymore the black theme (maybe it's vivaldi ?)

Last edited by steph44 (2026-10-17 15:10:52)

seth

Member

From: Won't reply 2 private help req

Registered: 2012-09-03

Posts: 78,471

Re: [SOLVED] Some issues after KDE 6.8 update

No more X11 session on the login manager.

KDE has removed the X11 session w/ 6.8

virtual keyboard is appearing on the login manager

*which* DM? SDDM, plasma-login-manager, …?

Vivaldi doesn't follow anymore the black theme

You mean https://wiki.archlinux.org/title/Dark_m … top_Portal ?
Or a general theme setting? Idk whether vivaldi has ever actually "followed" some DE here but you can configure random themes/colors in vivaldi:settings/themes/

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steph44

Member

Registered: 2025-10-24

Posts: 4

Re: [SOLVED] Some issues after KDE 6.8 update

KDE has removed the X11 session w/ 6.8

Ok. It's sad. No way to put it back ?

*which* DM? SDDM, plasma-login-manager, …?

SDDM

Finally for Vlvaldi it was a problem of theme. Maybe the latest update reset some settings and I thought it was related to KDE.

seth

Member

From: Won't reply 2 private help req

Registered: 2012-09-03

Posts: 78,471

Re: [SOLVED] Some issues after KDE 6.8 update

https://bbs.archlinux.org/viewtopic.php … 4#p2312134

https://wiki.archlinux.org/title/SDDM#E … l_keyboard

grep -r InputMethod /etc/sddm*

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dafrasaga

Member

Registered: 2021-07-18

Posts: 6

Re: [SOLVED] Some issues after KDE 6.8 update

I All,
issues after upgrade me too
I was on X11 but now it's available anymore :-(
The big issue is when i move the mouse monitor is flickering; it's unusable

Can I roll back ?

seth

Member

From: Won't reply 2 private help req

Registered: 2012-09-03

Posts: 78,471

Re: [SOLVED] Some issues after KDE 6.8 update

You can downgrade plasma and put the packages into pacman's ignore list, but this will eventually break and can only serve as crutch while either getting the wayland issues sorted out or looking for an alternative.

Try to change kwin to prefer accuracy over performance (read that somewhere in passing as cause of flicker)

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dafrasaga

Member

Registered: 2021-07-18

Posts: 6

Re: [SOLVED] Some issues after KDE 6.8 update

Try to change kwin to prefer accuracy over performance (read that somewhere in passing as cause of flicker)

Can you give me some tips where to do it?

seth

Member

From: Won't reply 2 private help req

Registered: 2012-09-03

Posts: 78,471

Re: [SOLVED] Some issues after KDE 6.8 update

read that somewhere in passing

But it's likely somewhere in the compositor page of sytemsettings

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V1del

Forum Moderator

Registered: 2012-10-16

Posts: 25,420

Re: [SOLVED] Some issues after KDE 6.8 update

You can toggle that in the screen settings

kcmshell6 kcm_kscreen

maybe also check there whether VRR is enabled and setting a stable refreshrate instead or so.

genericity

Member

Registered: 2014-09-20

Posts: 36

Re: [SOLVED] Some issues after KDE 6.8 update

Idk whether vivaldi has ever actually "followed" some DE here but you can configure random themes/colors in vivaldi:settings/themes/

Vivaldi follows "org.gnome.desktop.interface.color-scheme" (prefer-light/prefer-dark) in dconf. I don't know if it reads from the settings portal, or directly.

Last edited by genericity (2026-10-17 02:08:38)

seth

Member

From: Won't reply 2 private help req

Registered: 2012-09-03

Posts: 78,471

Re: [SOLVED] Some issues after KDE 6.8 update

https://bbs.archlinux.org/viewtopic.php … 9#p2312239

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steph44

Member

Registered: 2025-10-24

Posts: 4

Re: [SOLVED] Some issues after KDE 6.8 update

For the virtual keyboard the problem is solved by putting InputMethod=<empty> in SDDM conf.

For the need of a X11 session it was because of a bug in conky with wayland. But the bug is solved upstream, so I just have to wait fot the update, and there is a workaround.

Thanks seth.

seth

Member

From: Won't reply 2 private help req

Registered: 2012-09-03

Posts: 78,471

Re: [SOLVED] Some issues after KDE 6.8 update

\o/
Please always remember to mark resolved threads by editing your initial posts subject - so others will know that there's no task left, but maybe a solution to find.
Thanks.

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