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On 2015-07-21 14:12, Nikos Chantziaras wrote:
> I upgraded to KDE 5 recently, and was using LightDM as the display
> manager. It seems that KDE 5 prefers SDDM though and offers a
> config module for it in System Settings.
>
> So I installed SDDM. However, when I log in with SDDM, I get no
> sound. My sound card just... disappears. "alsamixer -c0" says:
>
> invalid card index: 0".
>
> "aplay -l" says:
>
> aplay: device_list:268: no soundcards found...
>
> Even if I disable pulseaudio, there's still no ALSA cards found.
>
> When I ctrl+alt+F1 to a console and log in there, there's no
> problem. My sound card is found. But in a KDE session started with
> SDDM, nope. No sound card (and thus, no sound.)
>
> Works just fine with LightDM.
>
> I'm on ~amd64 with gentoo-sources-4.1.2, pulseaudio-6.0. KDE 5 is
> installed from portage (kde-plasma/plasma-meta). Any help?
>
>
Are you using systemd? If so, did you build sddm with USE=systemd?
If not, did you build sddm with USE=consolekit and read the warning
printed by portage?
This display manager doesn't have native built-in ConsoleKit
support. In order to use ConsoleKit pam module with this display
manager, you should remove the "nox11" parameter from
pm_ck_connector.so line in /etc/pam.d/system-login
Your issue is most likely that your X session is not being treated as
a login session by logind/ConsoleKit, and therefore your user is not
being added to the ACLs on the various devices under /dev, including
all sound devices, certain input devices, any CD/DVD/BR devices you
may have, and certain video devices.
- --
Jonathan Callen
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