Talk:SDDM

Regarding the language support on login

The instructions do no always work (https://bbs.archlinux.org/viewtopic.php?id=196248 and I got this too) but there is a work-around

"Alternatively, if the above doesn't work for some reason, you could edit the file /usr/share/sddm/scripts/Xsetup and add the command setxkbmap -layout ISO, e.g. setxkbmap -layout se for a Swedish keyboard." I don't know if you want this included or if we are doing something stupid to not getting it to work. --Shieldfire (talk) 08:46, 1 June 2015 (UTC)

Hello I recently ran in the same problem

I set up Archlinux and want to install kde, I try to run sddm.service Wayland, but my keyboard was not set up correctly.

After some digging I found this link: [1]

I am a fan from systemd, so I ran the following command:

localectl

Result:

System Locale: LANG=en_US.UTF-8

               LC_TIME=en_US.UTF-8

    VC Keymap: en_US.UTF-8

   X11 Layout: (notset)

   

I set up the X11 Layout after ran the command: localectl --help.

Setting up the X11 Layout:

localectl set-x11-keymap fr

After setting up, I executed command:

localectl

Result:

System Locale: LANG=en_US.UTF-8

               LC_TIME=en_US.UTF-8

    VC Keymap: en_US.UTF-8

   X11 Layout: (fr)

   

After that, I rebooted the system and it works.

Hope this helps. Snoppiz (talk) 20:18, 28 October 2024 (UTC)

Regarding SDDM and root login

There is some discussion on root login in SDDM here: https://forum.kde.org/viewtopic.php%3Ff=289&t=124502.html#p328070 Don't know if it's a "feature" or something is broken in SDDM or if it's a bug in Arch (and openSuse).

There's a clear statement from the developer there now stating that it is the intended behaviour. It's a feature; not a bug. (And other posts noting that, really, you shouldn't want to be running an X session as root, for example.) --cfr (talk) 01:19, 31 August 2022 (UTC)

Regarding SDDM 0.14.0

As the default shipped /etc/sddm.conf was changed some parts of the page have to be changed when 0.14.0 lands in [extra]. Z3ntu (talk) 10:15, 1 September 2016 (UTC)

SDDM loading before radeon module (ATI video driver)

Some update by 11-Sep-19 made SDDM unable to load normally during the boot process. The Wiki page should encourage the adding of the 'radeon' module in /etc/mkinitcpio.conf [MODULES=(radeon...)]. The update that caused the issue is for sure not related to SDDM, whose version 0.18.1 went out on 31-Mar-19. Probably is kernel or mesa related. Nicoadamo (talk)

This is already pointed out in various places, e.g. ATI#Enable early KMS. As you say, it is not related to SDDM. Closing. -- Lahwaacz (talk) 13:55, 21 September 2019 (UTC)

I disagree with 'already pointed out in various places'. The article you linked only mentions how to, but never says it is a condition for a Desktop Manager to start properly at boot. Nicoadamo (talk)

So let's see if more people have this problem. -- Lahwaacz (talk) 07:00, 22 September 2019 (UTC)

rootless X

Does sddm support running X rootless? It would be helpful to include a statement about this either way. (I can't find this information anywhere. I thought I'd read sddm didn't support it, but is that still the case? And, if so, is it still the recommended DM for KDE/Plasma?) --cfr (talk) 01:15, 31 August 2022 (UTC)

It looks like is being worked on and there is code for it in the develop branch. You could try it with sddm-git^AUR But it looks like it doesn't work well yet https://github.com/sddm/sddm/issues/1502. If everything goes well, it might be released in the next version, 1.20. —ENV25 (talk) 12:30, 11 October 2022 (UTC)

https://www.reddit.com/r/kde/comments/uan8a2/got_rootless_xorg_working/ —ENV25 (talk) 12:34, 11 October 2022 (UTC)

Regarding SDDM switching monitor on bug

I encountered this bug on SDDM 0.21.4, using recommended settings in SDDM#Wayland. Should I add a warning here or just append it to trouble shooting? Catoverflow (talk) 10:51, 6 August 2024 (UTC)

Regarding the 'black screen with blinking cursor' issue

I've encountered this while using Arch on my old netbook powered by a weak Intel Atom processor.

I managed to fix the issue and get SDDM working by installing the xf86-video-intel package. Apparently, Mesa driver alone doesn't do the job for old Intel Graphics hardware.

Is it worth mentioning in the article? Veetrill (talk) 13:03, 4 January 2025 (UTC)

Re: Fingerprint Reader Integration

There's a note in the Using a fingerprint reader section about how the specified configuration doesn't work. I'm new to PAM configuration but spent a little looking into this (to resolve the issue on my machine). The provided configuration does work, but does not work as intended if modifications are also made to /etc/pam.d/system-auth following guidance from the fprint wiki.

The issue is that the SDDM auth. module configuration (indirectly) includes /etc/pam.d/system-auth. Manually expanding the include chain to avoid duplicating fprint entries does resolve the issue, but I'm not sure if it's the best route as it may pose a maintenance issue if any of these conf. files change upstream, etc.

I'm curious to know how best to update the wiki. Is simply updating the note to mention the nuance of the relationship between modules sufficient? I'm hesitant to go as far as suggesting expanding the includes as it seems like a poor practice. Jrcharlo (talk) 13:33, 27 November 2025 (UTC)