Sound is not working on my new laptop under Fedora20

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The hardware is Toshiba Satellite S50D-A running FC20 with kernel 3.15.6-200.fc20.x86_64. It has analog and HDMI capability, but I am unable to test the HDMI. I have XFCE as my user-interface.

I have no sound from the speakers or the headphones. Using pavucontrol, I have verified that the volume is set at 100%. Using the audio-mixer from XFCE, I have verified that master, headphone and speaker have full volume and are not muted for sound card "HD-Audio Generic (Alsa mixer)", and volume is full with sound card "Playback: Built-in Audio Audio Analog Stereo (PulseAudio MIxer)".

The output from aplay -l is

**** List of PLAYBACK Hardware Devices **** card 0: HDMI [HDA ATI HDMI], device 3: HDMI 0 [HDMI 0]  
Subdevices: 1/1   Subdevice #0:
subdevice #0 card 1: Generic [HD-Audio
Generic], device 0: 92HD99BXX Analog
[92HD99BXX Analog]   Subdevices: 1/1  
Subdevice #0: subdevice #0

The output from lspci -v | grep Audio -A 11 is

00:01.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Trinity HDMI Audio Controller
        Subsystem: Advanced Micro Devices, Inc. [AMD/ATI] Trinity HDMI Audio Controller
        Flags: bus master, fast devsel, latency 0, IRQ 46
        Memory at f0344000 (32-bit, non-prefetchable) [size=16K]
        Capabilities: [50] Power Management version 3
        Capabilities: [58] Express Root Complex Integrated Endpoint, MSI 00
        Capabilities: [a0] MSI: Enable+ Count=1/1 Maskable- 64bit+
        Capabilities: [100] Vendor Specific Information: ID=0001 Rev=1 Len=010 <?>
        Kernel driver in use: snd_hda_intel
        Kernel modules: snd_hda_intel

00:02.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 10h-1fh) Processor Root Port (prog-if 00 [Normal decode])
        Flags: bus master, fast devsel, latency 0
--
00:14.2 Audio device: Advanced Micro Devices, Inc. [AMD] FCH Azalia Controller (rev 01)
        Subsystem: Toshiba America Info Systems Device fa91
        Flags: bus master, slow devsel, latency 64, IRQ 16
        Memory at f0340000 (64-bit, non-prefetchable) [size=16K]
        Capabilities: [50] Power Management version 2
        Kernel driver in use: snd_hda_intel
        Kernel modules: snd_hda_intel

00:14.3 ISA bridge: Advanced Micro Devices, Inc. [AMD] FCH LPC Bridge (rev 11)
        Subsystem: Advanced Micro Devices, Inc. [AMD] FCH LPC Bridge
        Flags: bus master, 66MHz, medium devsel, latency 0

Sound is working fine under Windows 8.

Does anyone have any idea of how to get sound working?