[Pkg-ltsp-devel] Bug#710016: ltsp-server: No sound on some clients (solved)

[Andreas Brogle]

Package: ltsp-server
Version: 5.4.2-6
Severity: normal

Dear Maintainer,

On some clients there is no sound output with players such as cvlc, vlc or kaffeine.
The programs are starting and then hanging.
Other clients are doing their job faultless.
No problem on all clients with mpg321.

cvlc -v says "pulse audio output error: overflow, flushing"

pulseaudio -vvv started locally at the client in a root shell is filling syslog with "Processing rewind..." messages.


Solution / Workaround :
Setting the option
default-sample-rate = 48000
in the config file
/opt/ltsp/i386/etc/pulse/daemon.conf
works for me.


Don't know if it is a good idea to do that, because I don't understand the working of the sound system in detail.
The sound problem did annoying me more than a year. Now it seems to work and I couldn't detect any side effects as yet.


Sincerely,
Andreas


-- Package-specific info:
chroot information: /opt/ltsp/i386

-- System Information:
Debian Release: jessie/sid
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)

Kernel: Linux 3.9-3.slh.1-aptosid-amd64 (SMP w/2 CPU cores; PREEMPT)
Locale: LANG=de_DE.utf8, LC_CTYPE=de_DE.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages ltsp-server depends on:
ii  debconf [debconf-2.0]  1.5.50
ii  debconf-utils          1.5.50
ii  debootstrap            1.0.52
ii  gettext-base           0.18.1.1-10
ii  iproute                1:3.9.0-2
ii  lsb-release            4.1+Debian11
ii  openssh-client         1:6.2p2-3
ii  python                 2.7.3-5
ii  tcpd                   7.6.q-24
ii  update-inetd           4.43

Versions of packages ltsp-server recommends:
ii  dnsmasq                           2.66-2
ii  nbd-server                        1:3.3-3
ii  nfs-kernel-server                 1:1.2.8-2
ii  openbsd-inetd [inet-superserver]  0.20091229-2
ii  openssh-server                    1:6.2p2-3
ii  squashfs-tools                    1:4.2+20130409-1
ii  tftpd-hpa                         5.2-7

Versions of packages ltsp-server suggests:
pn  audiooss                           <none>
ii  dnsmasq                            2.66-2
ii  fluxbox [x-window-manager]         1.3.5-1
ii  isc-dhcp-server [dhcp3-server]     4.2.4-6
ii  ldm-server                         2:2.2.11-2
ii  libasound2-plugins                 1.0.27-2
ii  ltsp-docs                          1.1-1
pn  ltspfs                             <none>
ii  metacity [x-window-manager]        1:2.34.3-4
ii  pulseaudio                         2.0-6.1
pn  qemu-user-static                   <none>
pn  sdm                                <none>
ii  x11-utils                          7.7~1
ii  xauth                              1:1.0.7-1
ii  xfce4-session [x-session-manager]  4.10.1-1
ii  xfwm4 [x-window-manager]           4.10.1-1

-- debconf information excluded