Bonjour,
J’ai un léger soucis sur une Debian Wheezy Xfce : lorsque je lance un fichier audio avec VLC -> nickel.
Par contre, si je lance ce fichier avec Quod Libet j’obtiens un message :
“Erreur de sortie
GStreamer output pipeline could not be initialized. The pipeline might be invalid, or the device may be in use. Check the player preferences.”
Dans le gestionnaire de paramètres je n’ai aucune rubrique “Audio” et pourtant “xfce4-mixer” est bien installé. Si je le lance à la main j’obtiens ce message :
“Erreur
GStreamer n’a pas détecté de cartes son. Certains paquets de GStreamer peuvent être manquants. Il peut aussi s’agir d’un problème de permissions.”
J’ai testé sous Ubuntu et sous Fedora je n’ai pas de problème 
Si quelqu’un peut m’aider, merci d’avance.
Commande “lspci” :
00:00.0 Host bridge: ATI Technologies Inc RX780/RX790 Chipset Host Bridge
00:02.0 PCI bridge: ATI Technologies Inc RD790 PCI to PCI bridge (external gfx0 port A)
00:11.0 SATA controller: ATI Technologies Inc SB7x0/SB8x0/SB9x0 SATA Controller [AHCI mode] (rev 40)
00:12.0 USB controller: ATI Technologies Inc SB7x0/SB8x0/SB9x0 USB OHCI0 Controller
00:12.2 USB controller: ATI Technologies Inc SB7x0/SB8x0/SB9x0 USB EHCI Controller
00:13.0 USB controller: ATI Technologies Inc SB7x0/SB8x0/SB9x0 USB OHCI0 Controller
00:13.2 USB controller: ATI Technologies Inc SB7x0/SB8x0/SB9x0 USB EHCI Controller
00:14.0 SMBus: ATI Technologies Inc SBx00 SMBus Controller (rev 42)
00:14.2 Audio device: ATI Technologies Inc SBx00 Azalia (Intel HDA) (rev 40)
00:14.3 ISA bridge: ATI Technologies Inc SB7x0/SB8x0/SB9x0 LPC host controller (rev 40)
00:14.4 PCI bridge: ATI Technologies Inc SBx00 PCI to PCI Bridge (rev 40)
00:14.5 USB controller: ATI Technologies Inc SB7x0/SB8x0/SB9x0 USB OHCI2 Controller
00:15.0 PCI bridge: ATI Technologies Inc SB700/SB800/SB900 PCI to PCI bridge (PCIE port 0)
00:16.0 USB controller: ATI Technologies Inc SB7x0/SB8x0/SB9x0 USB OHCI0 Controller
00:16.2 USB controller: ATI Technologies Inc SB7x0/SB8x0/SB9x0 USB EHCI Controller
00:18.0 Host bridge: Advanced Micro Devices [AMD] Family 10h Processor HyperTransport Configuration
00:18.1 Host bridge: Advanced Micro Devices [AMD] Family 10h Processor Address Map
00:18.2 Host bridge: Advanced Micro Devices [AMD] Family 10h Processor DRAM Controller
00:18.3 Host bridge: Advanced Micro Devices [AMD] Family 10h Processor Miscellaneous Control
00:18.4 Host bridge: Advanced Micro Devices [AMD] Family 10h Processor Link Control
01:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 06)
02:07.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10)
03:00.0 VGA compatible controller: ATI Technologies Inc Cedar PRO [Radeon HD 5450]
03:00.1 Audio device: ATI Technologies Inc Manhattan HDMI Audio [Mobility Radeon HD 5000 Series]
Commande “lsmod” :
Module Size Used by
twofish_generic 16569 0
twofish_x86_64 12501 12
twofish_common 20544 2 twofish_generic,twofish_x86_64
cryptd 14517 0
aes_x86_64 16796 12
aes_generic 33026 1 aes_x86_64
xts 12645 12
gf128mul 13048 1 xts
dm_crypt 22586 2
dm_mod 63353 5 dm_crypt
parport_pc 22364 0
ppdev 12763 0
lp 17149 0
parport 31858 3 parport_pc,ppdev,lp
mperf 12453 0
cpufreq_conservative 13147 0
cpufreq_powersave 12454 0
cpufreq_userspace 12576 0
cpufreq_stats 12866 0
binfmt_misc 12957 1
nfsd 259717 2
nfs 312135 0
lockd 67328 2 nfsd,nfs
fscache 36739 1 nfs
auth_rpcgss 37143 2 nfsd,nfs
nfs_acl 12511 2 nfsd,nfs
sunrpc 173516 6 nfsd,nfs,lockd,auth_rpcgss,nfs_acl
fuse 61981 9
loop 22597 2
snd_hda_codec_hdmi 26548 1
snd_hda_codec_via 41119 1
psmouse 55543 0
snd_usb_audio 84796 0
snd_usbmidi_lib 23373 1 snd_usb_audio
snd_seq_midi 12848 0
snd_seq_midi_event 13316 1 snd_seq_midi
snd_rawmidi 23060 2 snd_usbmidi_lib,snd_seq_midi
joydev 17266 0
evdev 17562 8
sp5100_tco 12900 0
pcspkr 12579 0
serio_raw 12850 0
snd_hda_intel 26182 0
snd_hda_codec 72920 3 snd_hda_codec_hdmi,snd_hda_codec_via,snd_hda_intel
radeon 648863 2
snd_seq 45093 2 snd_seq_midi,snd_seq_midi_event
edac_core 35258 0
edac_mce_amd 17103 0
snd_seq_device 13176 3 snd_seq_midi,snd_rawmidi,snd_seq
k10temp 12611 0
i2c_piix4 12536 0
snd_hwdep 13186 2 snd_usb_audio,snd_hda_codec
snd_pcm 63744 4 snd_hda_codec_hdmi,snd_usb_audio,snd_hda_intel,snd_hda_codec
snd_timer 22917 2 snd_seq,snd_pcm
ttm 48725 1 radeon
snd 52798 12 snd_hda_codec_hdmi,snd_hda_codec_via,snd_usb_audio,snd_usbmidi_lib,snd_rawmidi,snd_hda_intel,snd_hda_codec,snd_seq,snd_seq_device,snd_hwdep,snd_pcm,snd_timer
drm_kms_helper 27227 1 radeon
drm 167371 4 radeon,ttm,drm_kms_helper
soundcore 13065 1 snd
asus_atk0110 17297 0
i2c_algo_bit 12841 1 radeon
i2c_core 23876 5 radeon,i2c_piix4,drm_kms_helper,drm,i2c_algo_bit
snd_page_alloc 13003 2 snd_hda_intel,snd_pcm
power_supply 13475 1 radeon
wmi 13243 0
button 12937 0
processor 27949 0
thermal_sys 18040 1 processor
ext4 312988 1
mbcache 13065 1 ext4
jbd2 62015 1 ext4
crc16 12343 1 ext4
usbhid 36379 0
hid 77192 1 usbhid
sd_mod 36136 7
sr_mod 21899 0
crc_t10dif 12348 1 sd_mod
cdrom 35401 1 sr_mod
ohci_hcd 26614 0
r8169 42391 0
8139too 26492 0
8139cp 22658 0
mii 12675 3 r8169,8139too,8139cp
ehci_hcd 40215 0
ahci 24997 4
libahci 22860 1 ahci
libata 140545 2 ahci,libahci
scsi_mod 162376 3 sd_mod,sr_mod,libata
usbcore 124095 6 snd_usb_audio,snd_usbmidi_lib,usbhid,ohci_hcd,ehci_hcd
