[USB-Audio - DigiHug USB Audio, playback] No sound at all

[humboink]

Since apt-get upgrading, my USB Fiio E10 Olympus outputs no sound on Ubuntu 14.10.
However, I was able to hear the two signals from ubuntu-bug -s audio.

Another USB audio device (a logitech headphone) works fine.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: alsa-base 1.0.25+dfsg-0ubuntu4
ProcVersionSignature: Ubuntu 3.13.0-38.65-generic 3.13.11.8
Uname: Linux 3.13.0-38-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.5
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: bhajduk 2814 F.... pulseaudio
 /dev/snd/controlC1: bhajduk 2814 F.... pulseaudio
CurrentDesktop: Unity
Date: Thu Oct 23 18:05:59 2014
InstallationDate: Installed on 2012-05-03 (903 days ago)
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
PackageArchitecture: all
SourcePackage: alsa-driver
Symptom: audio
Symptom_AlsaPlaybackTest: ALSA playback test through plughw:Audio successful
Symptom_Card: DigiHug USB Audio - DigiHug USB Audio
Symptom_DevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: bhajduk 2814 F.... pulseaudio
 /dev/snd/controlC1: bhajduk 2814 F.... pulseaudio
Symptom_PulsePlaybackTest: PulseAudio playback test successful
Symptom_Type: No sound at all
Title: [USB-Audio - DigiHug USB Audio, playback] No sound at all
UpgradeStatus: Upgraded to trusty on 2014-04-22 (184 days ago)
dmi.bios.date: 05/28/2011
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A05
dmi.board.name: 06D7TR
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 6
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA05:bd05/28/2011:svnDellInc.:pnOptiPlex990:pvr01:rvnDellInc.:rn06D7TR:rvrA00:cvnDellInc.:ct6:cvr:
dmi.product.name: OptiPlex 990
dmi.product.version: 01
dmi.sys.vendor: Dell Inc.

[humboink (humboink)]

I close this. The bug disappeared after several shutdowns (not the two first ones).