FYI, I just wrote a small wiki article about the audio group:
https://wiki.ubuntu.com/Audio/TheAudioGroup
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[Karmic][Lucid] Only one user has sound; no hw shows in Sound Preferences
https://bugs.launchpad.net/bugs/433654
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Good job David!!!
On Tue, Aug 24, 2010 at 10:16 AM, David Henningsson
433...@bugs.launchpad.net wrote:
FYI, I just wrote a small wiki article about the audio group:
https://wiki.ubuntu.com/Audio/TheAudioGroup
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[Karmic][Lucid] Only one user has sound; no hw shows in Sound Preferences
Well, I really appreciate the workaround proposed by Igor, great job, many
thanks! At least it has made sound to work more predictable.
However, I believe the issue is broader than just playing with the audio
group. Since it affects not 100% of users and some of them are used to hear
sound
I created a separate bug on the issue:
https://bugs.launchpad.net/ubuntu/+source/system-tools-
backends/+bug/593110
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[Karmic][Lucid] Only one user has sound; no hw shows in Sound Preferences
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No, that's really the same bug. users-admin shouldn't show that group at
all since it's plainly broken. This behavior doesn't make sense. That's
why I said we should remove the audio group, which would fix the bug for
all people that were added to it without noticing.
If that doesn't seem right,
Apologies; I had thought that this bug was going in a different
direction.
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Well, the fact remains that this needs to be fixed! I messed up user
switching because I innocently gave myself permission to merely use
the sound card.
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[Karmic][Lucid] Only one user has sound; no hw shows in Sound Preferences
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Chauncellor: at least, if you were able to play with permissions, you
should be able to find this bug report. With the new users-admin, it's
harder to tweak fine-grained permissions, so hopefully nobody will do
this anymore.
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[Karmic][Lucid] Only one user has sound; no hw shows in Sound
On the contrary, it's ridiculously easy to do. I admitted myself access
to a friend's computer for shared access (both admins). Upon setting it
up my profile, I glanced through the permissions and found that it would
be worthwhile for me to have access to Video, Audio, etc. Thus, I
checked them
Mind you that I'd consider any device-kit privilege escalation
implementation that isn't configured to support/use (be itself easily
configurable by) standard unix user group memberships as a regression.
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[Karmic][Lucid] Only one user has sound; no hw shows in Sound Preferences
Instead pulling users from the audio group etc. to make user switching
work, device-kit configuration needs to take user groups into account.
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[Karmic][Lucid] Only one user has sound; no hw shows in Sound Preferences
https://bugs.launchpad.net/bugs/433654
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** Also affects: consolekit (Ubuntu)
Importance: Undecided
Status: New
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[Karmic][Lucid] Only one user has sound; no hw shows in Sound Preferences
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** Description changed:
+ Sound does not work for different users if they belong to the audio
+ group.
+
+ A workaround is to remove the users from the audio group. With this
+ however simply managing individual device access based on standard group
+ memberships stops working (regression).
+
+
** Changed in: gnome-system-tools (Ubuntu)
Importance: Undecided = Medium
** Changed in: gnome-system-tools (Ubuntu)
Assignee: (unassigned) = Chris Coulson (chrisccoulson)
** Changed in: gnome-system-tools (Ubuntu)
Status: Confirmed = In Progress
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[Karmic][Lucid] Only one user
This bug was fixed in the package gnome-system-tools - 2.29.91-0ubuntu2
---
gnome-system-tools (2.29.91-0ubuntu2) lucid; urgency=low
* debian/patches/26_user_profiles_conf.patch:
- Don't add users to the audio group. This is consistent with
user-setup and fixes an issue
Chris: what about removing the 'audio' from from the system altogether?
ATM we still show it as a privilege in the Advanced dialog, which can be
misleading. Groups that aren't used shouldn't be created in the first
place, and users-admin will then hide them.
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[Karmic][Lucid] Only one user has
Milan, that would be a very unwise thing to do for an LTS. Of particular
import is the fact that not every Ubuntu derivative uses PulseAudio.
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[Karmic][Lucid] Only one user has sound; no hw shows in Sound Preferences
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Milan, I think that removing audio group is not a good idea. There are
at least 2 reasons.
1. It might affect a lot of system components at least udev, libmtp, alsa which
might cause regressions.
2. It would prevent group based access control to the audio device - mind that
/dev is dynamic, so
Hi Igor,
Thanks so much for this!
U-DA-MAN!
Igor Wojnicki wrote:
Guys I found it!!! Here is the solution!
1st the lucid daily build (28.02.10) doesn't perform better than karmic, but
it gave me some clues.
When it logged in (the daily build) as ubuntu I started rythmbox to play.
I
Actually the problem is more general and it regards permissions to
access certain devices (and files in /dev directory). Historically if a
user needs access to particular device he is assigned to a group which
group-owns the device file. It has worked for ages in the unix world
i.e. access to an
Regarding the property 'Use audio device' and my motion (comment #48).
Giving it a second thought the rename might be unfortunate. Especially
if one does not have consolekit installed.
If consolekit IS NOT installed than assigning a user to audio group
makes an audio device accessible to him,
** Changed in: gnome-system-tools (Ubuntu)
Status: New = Confirmed
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What about the user that is made when installing? Isn't that an
administrator? I think we should make it so that the user that is
created when you install works properly too. (I'm just not sure if it is
based off the administrator profile. If it is, is it the right thing to
make the administrator
Good point Erik. I'm not sure about that 'Administrator Profile' either
- that's why I didn't propose to change it. But It seems to be
reasonable to remove audio group from all three profiles.
I guess packaging is not a problem, committing the changes and making them to
Lucid might be though. I
The user created during install is not created via the GNOME tools, but
via the low level command-line components to create users, so the first
user should not be in the audio group.
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[Karmic][Lucid] Only one user has sound; no hw shows in Sound Preferences
Luke you're right. Fortunately ubiquity (which is the ubuntu installer)
seems to work just fine - at least according to its changelog:
user-setup (1.27ubuntu1) karmic; urgency=low
* Resynchronise with Debian. Remaining changes:
- Add the initial user to the adm, dip, lpadmin, and
Guys I found it!!! Here is the solution!
1st the lucid daily build (28.02.10) doesn't perform better than karmic, but it
gave me some clues.
When it logged in (the daily build) as ubuntu I started rythmbox to play.
I added another user aa.
I switched to aa, and... the music stopped playing :)
PS. I would like to make a motion to:
1. rename the property 'Use audio device' to 'Use audio device exclusively',
2. make it unchecked by default,
3. document it.
It would apply to users-admin application in gnome-system-tools.
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[Karmic][Lucid] Only one user has sound; no hw shows in Sound
** Also affects: gnome-system-tools (Ubuntu)
Importance: Undecided
Status: New
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[Karmic][Lucid] Only one user has sound; no hw shows in Sound Preferences
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Bugs, which is
PS2. Disabling 'Use audio device' removes the user from audio group. And
since /dev/dsp is acl controlled, access to it is granted to the user
which currently uses the display. I guess that the ACL magic is done by
policykit/udev - but i'm not sure though.
So, to enable sound switching with user
As per latest comments, this is not a pulseaudio bug.
** Changed in: pulseaudio (Ubuntu)
Status: Confirmed = Invalid
** Changed in: pulseaudio (Ubuntu)
Status: Invalid = Confirmed
** Changed in: pulseaudio (Ubuntu)
Assignee: Luke Yelavich (themuso) = (unassigned)
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** Changed in: pulseaudio (Ubuntu)
Status: Confirmed = Invalid
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[Karmic][Lucid] Only one user has sound; no hw shows in Sound Preferences
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I couldn't seem to get the fix mentioned to work with existing users on
both karmic and lucid. It seems to work after a restart though. So I can
confirm that the fix works, after a restart.
I second Igor Wojnicki 's suggestion, with one additional thing:either upgrade
the setting to unchecked if
** Summary changed:
- [Karmic] Only one user has sound; no hw shows in Sound Preferences
+ [Karmic][Lucid] Only one user has sound; no hw shows in Sound Preferences
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[Karmic][Lucid] Only one user has sound; no hw shows in Sound Preferences
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Ok, I followed the instructions on the wiki. I disabled autospawning for
both users and then started pulseaudio as specified on both users. Then
on user 1 I started playing a .ogg. Opened sound preferences and and
verfied that the music player showed up. Switched to user 2. (Could
still hear user
** Attachment added: Log from first user
http://launchpadlibrarian.net/39894555/pulseverbose_user1.log
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Ok, I think I figured out the difference between getting a dummy output or
having the output there but not working for the second user.
If user 1 starts playing something before user 2 logs in an starts their
client, then user 2 can't see (or select) the output in Sound Preferences
(which
** Attachment added: User 2's log from 'dummy output' run
http://launchpadlibrarian.net/39894878/pulseverbose_user2_dummy.log
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