Bug#466521: libphonon4: no sound: "the device is currently not available"

[Marcus Better <marcus@better.se>]

Package: libphonon4
Version: 4:4.0.1-1
Severity: important

I get no sound out of the KDE sound system. In the Device Preference
tab of the Sound dialog in the System Settings, I have two outputs
listed:

  HDA ATI SB (STAC92xx Analog)
  HDA ATI SB (STAC92xx Digital)

but both are disabled, and hovering on them brings up a popup saying

  The device is currently not available (either it is unplugged or the
  driver is not loaded)

However I can play sound using ALSA (aplay) so the device seems to be
fine. Everything looks normal i kmix, too. The Phonon xine backend is
configured.

This is an LG LE50 Express laptop, i386, kernel 2.6.24.

~$ lspci |grep -i audio
00:14.2 Audio device: ATI Technologies Inc SB450 HDA Audio (rev 01)

~$ lsmod|grep snd
snd_seq_dummy           3716  0
snd_pcm_oss            41856  0
snd_mixer_oss          17096  1 snd_pcm_oss
snd_seq                52024  1 snd_seq_dummy
snd_seq_device          8532  2 snd_seq_dummy,snd_seq
snd_hda_intel         284900  1
snd_pcm                79532  2 snd_pcm_oss,snd_hda_intel
snd_timer              24092  2 snd_seq,snd_pcm
snd                    55332  9 snd_pcm_oss,snd_mixer_oss,snd_seq,snd_seq_device,snd_hda_intel,snd_pcm,snd_timer
soundcore               8416  1 snd
snd_page_alloc         10376  2 snd_hda_intel,snd_pcm

~$ cat /proc/asound/cards
 0 [SB             ]: HDA-Intel - HDA ATI SB
                      HDA ATI SB at 0xc0000000 irq 18

~$ cat /proc/asound/pcm
00-06: Si3054 Modem : Si3054 Modem : playback 1 : capture 1
00-01: STAC92xx Digital : STAC92xx Digital : playback 1 : capture 1
00-00: STAC92xx Analog : STAC92xx Analog : playback 1 : capture 1

-- System Information:
Debian Release: lenny/sid
  APT prefers testing
  APT policy: (990, 'testing'), (500, 'unstable'), (1, 'experimental')
Architecture: i386 (i686)

Kernel: Linux 2.6.24-lg (PREEMPT)
Locale: LANG=sv_SE.UTF-8, LC_CTYPE=sv_SE.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

Versions of packages libphonon4 depends on:
ii  libc6                     2.7-6          GNU C Library: Shared libraries
ii  libqt4-core               4.3.3-2        Qt 4 core non-GUI functionality ru
ii  libqt4-gui                4.3.3-2        Qt 4 core GUI functionality runtim
ii  libstdc++6                4.3-20080202-1 The GNU Standard C++ Library v3

libphonon4 recommends no packages.

-- no debconf information