Bug#521675: Only root can play sound in pulseaudio
Dr. Robin Haunschild
H at unschild.de
Tue Apr 8 13:23:01 UTC 2014
Hi,
on Tue, 08 04 14 14:50:06 Felipe Sateler wrote:
> Control: found -1 2.0-6.1
> Hi,
>
> On Mon, Apr 7, 2014 at 6:52 PM, Dr. Robin Haunschild <H at unschild.de> wrote:
> > Hi,
> >
> > yes, I still experience this in the pulseaudio version of Debian/stable.
> > I didn't test newer versions. My workaround is to kill all pulseaudio
> > processes as root and restart audio play back.
>
> If you could test the version from testing it would be great to
> confirm, but lets try to debug the problem.
Aren't there too many dependencies that I have to make some kind of a half or
even full upgrade to testing? E.g.: I have libc6 in version 2.13-38+deb7u1 but
pulseaudio from testing requires a libc6 version >= 2.15.
> Could you please post the output of the following commands?
Sure.
> pulseaudio -v -v -v
$ pulseaudio -v -v -v
I: [pulseaudio] main.c: setrlimit(RLIMIT_NICE, (31, 31)) failed: Operation not
permitted
D: [pulseaudio] core-rtclock.c: Timer slack is set to 50 us.
I: [pulseaudio] core-util.c: Failed to acquire high-priority scheduling:
Permission denied
I: [pulseaudio] main.c: This is PulseAudio 2.0
D: [pulseaudio] main.c: Compilation host: x86_64-pc-linux-gnu
D: [pulseaudio] main.c: Compilation CFLAGS: -g -O2 -fstack-protector --
param=ssp-buffer-size=4 -Wformat -Werror=format-security -Wall -W -Wextra -pipe
-Wno-long-long -Wvla -Wno-overlength-strings -Wunsafe-loop-optimizations -
Wundef -Wformat=2 -Wlogical-op -Wsign-compare -Wformat-security -Wmissing-
include-dirs -Wformat-nonliteral -Wpointer-arith -Winit-self -Wdeclaration-
after-statement -Wfloat-equal -Wmissing-prototypes -Wredundant-decls -Wmissing-
declarations -Wmissing-noreturn -Wshadow -Wendif-labels -Wcast-align -Wstrict-
aliasing -Wwrite-strings -Wno-unused-parameter -ffast-math -Wp,-
D_FORTIFY_SOURCE=2 -fno-common -fdiagnostics-show-option
D: [pulseaudio] main.c: Running on host: Linux x86_64 3.2.0-4-amd64 #1 SMP
Debian 3.2.54-2
D: [pulseaudio] main.c: Found 2 CPUs.
I: [pulseaudio] main.c: Page size is 4096 bytes
D: [pulseaudio] main.c: Compiled with Valgrind support: no
D: [pulseaudio] main.c: Running in valgrind mode: no
D: [pulseaudio] main.c: Running in VM: no
D: [pulseaudio] main.c: Optimized build: yes
D: [pulseaudio] main.c: FASTPATH defined, only fast path asserts disabled.
I: [pulseaudio] main.c: Machine ID is 1255fd68d056555ca29812ab4b119d93.
I: [pulseaudio] main.c: Session ID is
1255fd68d056555ca29812ab4b119d93-1396941267.271260-609221226.
I: [pulseaudio] main.c: Using runtime directory
/home/robin/.pulse/1255fd68d056555ca29812ab4b119d93-runtime.
I: [pulseaudio] main.c: Using state directory /home/robin/.pulse.
I: [pulseaudio] main.c: Using modules directory /usr/lib/pulse-2.0/modules.
I: [pulseaudio] main.c: Running in system mode: no
E: [pulseaudio] pid.c: Daemon already running.
E: [pulseaudio] main.c: pa_pid_file_create() failed.
$ ps aux | grep pulseaudio
119 4253 0.6 0.0 237188 5864 ? Sl 09:13 2:13
/usr/bin/pulseaudio --start --log-target=syslog
119 4481 0.0 0.0 116492 3188 ? S 09:14 0:00
/usr/lib/pulseaudio/pulse/gconf-helper
robin 5622 0.0 0.0 323700 7484 ? Sl 09:15 0:01
/usr/bin/pulseaudio --start --log-target=syslog
robin 5623 0.0 0.0 116464 3196 ? S 09:15 0:00
/usr/lib/pulseaudio/pulse/gconf-helper
robin 12021 0.0 0.0 7836 872 pts/7 S+ 15:01 0:00 grep
pulseaudio
$ grep 119 /etc/passwd
speech-dispatcher:x:119:29:Speech Dispatcher,,,:/var/run/speech-
dispatcher:/bin/sh
$ grep 119 /etc/group
pulse-access:x:119:robin
I'm not aware that I am using speech-dispatcher. Maybe I just uninstall the
package speech-dispatcher and hope the problem will be gone. Or is speech-
dispatcher some system package needed by other applications?
> groups (this is to see if you are in the audio group)
$ groups
robin dialout cdrom floppy sudo audio dip src video plugdev scanner netdev
bluetooth pulse pulse-access vboxusers fuse
> ls -l /dev/snd
$ ls -l /dev/snd
total 0
drwxr-xr-x 2 root root 60 Apr 8 09:13 by-path
crw-rw---T 1 root audio 116, 9 Apr 8 09:13 controlC0
crw-rw---T 1 root audio 116, 8 Apr 8 09:13 hwC0D0
crw-rw---T 1 root audio 116, 7 Apr 8 09:13 hwC0D1
crw-rw---T 1 root audio 116, 6 Apr 8 09:13 hwC0D3
crw-rw---T 1 root audio 116, 5 Apr 8 15:01 pcmC0D0c
crw-rw---T 1 root audio 116, 4 Apr 8 15:01 pcmC0D0p
crw-rw---T 1 root audio 116, 3 Apr 8 15:01 pcmC0D1p
crw-rw---T 1 root audio 116, 2 Apr 8 15:01 pcmC0D3p
crw------T 1 root root 116, 1 Apr 8 11:13 seq
crw-rw---T 1 root audio 116, 33 Apr 8 11:13 timer
> cat /etc/default/pulseaudio
$ cat /etc/default/pulseaudio
# Start the PulseAudio sound server in system mode.
# (enables the pulseaudio init script - requires that users be in the
# pulse-access group)
# System mode is not the recommended way to run PulseAudio as it has some
# limitations (such as no shared memory access) and could potentially allow
# users to disconnect or redirect each others' audio streams. The
# recommended way to run PulseAudio is as a per-session daemon. For GNOME/KDE/
# Xfce sessions in Ubuntu Lucid/10.04, /etc/xdg/autostart/pulseaudio.desktop
# handles this function of automatically starting PulseAudio on login, and for
# it to work correctly your user must *not* have "autospawn = no" set in
# ~/.pulse/client.conf (or in /etc/pulse/client.conf). By default, autospawn
# is enabled. For other sessions, you can simply start PulseAudio with
# "pulseaudio --daemonize".
# 0 = don't start in system mode, 1 = start in system mode
PULSEAUDIO_SYSTEM_START=0
# Prevent users from dynamically loading modules into the PulseAudio sound
# server. Dynamic module loading enhances the flexibility of the PulseAudio
# system, but may pose a security risk.
# 0 = no, 1 = yes
DISALLOW_MODULE_LOADING=1
> Also, does that system have multiple users?
Not really, my user (robin) is the only real user plus root. If it would help
debugging, I could create a new user to see if the problem is there, too.
Best regards,
Robin
--
Dr. Robin Haunschild
<H at unschild.de>
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