[SOLVED] upgrade 14.2>15.0: No sound except when root

harryhaller · 01-15-2024, 05:47 PM

Just upgraded to 15.0 and cannot get any sound neither in browser nor when using mplayer.
Alsamixer doesn't show any card when I press F6:

Code:

(default)

nor does pavucontrol.
It shows "dummy output"
and under "Advanced", PCM is shaded and can't be clicked...

But as root alsamixer [F6] shows me two cards

Code:

default:0 HDA Intel PCH
default:1 HDA NVidia

and I have sound when I use mplayer.

So I suppose it's to do with permissions.

Changes and hints mentions new groups, but I don't understand how they are to be used - or to what they apply - I don't know what these services are:

Code:

*** NEW USERS/GROUPS SINCE 14.2 ***

cgred group, GID 41
dovecot user and group, UID and GID 94
dovenull user and group, UID and GID 95
icecc user and group, UID and GID 49
ldap user and group, UID and GID 330
ntp user and group, UID and GID 44
postfix user and group, UID and GID 91
postdrop group, GID 92

To sum up, I get sound as root, but not otherwise.

harryhaller · 01-15-2024, 07:02 PM

As user (group users):

Code:

bash $ aplay -l
aplay: device_list:274: no soundcards found...

as root

Code:

aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: PCH [HDA Intel PCH], device 0: ALC656 Analog [ALC656 Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 3: HDMI 0 [HDMI 0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 7: HDMI 1 [HDMI 1]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

volkerdi · 01-15-2024, 09:19 PM

Quote:

Originally Posted by harryhaller

As user (group users):

You'll want to be part of these groups as a normal user:

Code:

bash-5.2$ groups
users lp floppy audio video cdrom plugdev power netdev scanner

Petri Kaukasoina · 01-16-2024, 12:35 AM

On my laptop, I am not in any supplementary groups.

Code:

$ groups
users

Audio, video, dvb etc work for the locally logged in user (xdm or agetty/login), but not for ssh logins from outside. elogind (udev? pam?) adds the local user in the needed access control lists for that session.

Code:

getfacl -Rs /dev

shows I have rw access to device nodes needed for cdrom, audio, netdev, video usage. For example:

Code:

# file: dev/dri/card1
# owner: root
# group: video
user::rw-
user:kaukasoi:rw-
group::rw-
mask::rw-
other::---

It's better than give group access to remote users, for privacy reasons.

It worked in 14.2 already but there was ConsoleKit2 and in 15.0 it is now elogind. So the next question is: Did you remove obsolete packages after upgrade from 14.2 to 15.0, for example ConsoleKit2? And did you process the .new files?

harryhaller · 01-16-2024, 01:10 AM

Thanks, Pat. That's fixed it.

harryhaller · 01-16-2024, 08:53 AM

Quote:

Originally Posted by Petri Kaukasoina

So the next question is: Did you remove obsolete packages after upgrade from 14.2 to 15.0, for example ConsoleKit2? And did you process the .new files?

I do a new install in a spare partition, so I always have the last release in it's own partition to fall back on - like I'm doing now. So I don't have to deal with obsolete packages.

I did the initial install a long time ago and didn't use it. Only now did I update it with slackpkg. So I had already setup my login. I can't check if the default groups have changed as I am now back on 14.2 because of other problems such as with firefox, which now wants to me to change mime types and won't search in my local bin directory for helper programs for different file types - which was not a problem on 14.2 and the question why "less" behaves differently - I think it may be caused by the version/configuration of urxvt - but they are both off the topic of this thread.