I have experienced this same issue, and could also unmute the audio. Sometimes
it was the input that was muted and sometimes the output. Upon changing to
unmuted, I could hear audio again. Now i'm experiencing something different
though. After weeks of having to adjust the audio every time I turn on my
computer, now not even unmuting the input and output audios am I able to hear
audio. Perhaps this info will help some:
sudo aplay -l
[sudo] password for james:
**** List of PLAYBACK Hardware Devices ****
card 0: SB [HDA ATI SB], device 0: STAC92xx Analog [STAC92xx Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: HDMI [HDA ATI HDMI], device 3: HDMI 0 [HDMI 0]
Subdevices: 0/1
Subdevice #0: subdevice #0
james@FbiVan:~$ lspci -v | grep -A7 -i "audio"
00:14.2 Audio device: Advanced Micro Devices [AMD] nee ATI SBx00 Azalia (Intel
HDA)
Subsystem: Gateway 2000 Device 0565
Flags: bus master, slow devsel, latency 64, IRQ 16
Memory at f0300000 (64-bit, non-prefetchable) [size=16K]
Capabilities: <access denied>
Kernel driver in use: snd_hda_intel
Kernel modules: snd-hda-intel
--
01:05.2 Audio device: Advanced Micro Devices [AMD] nee ATI Radeon X1200 Series
Audio Controller
Subsystem: Advanced Micro Devices [AMD] nee ATI Radeon X1200 Series
Audio Controller
Flags: bus master, fast devsel, latency 64, IRQ 19
Memory at cfdec000 (64-bit, non-prefetchable) [size=16K]
Capabilities: <access denied>
Kernel driver in use: snd_hda_intel
Kernel modules: snd-hda-intel
08:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd.
RTL8101E/RTL8102E PCI Express Fast Ethernet controller (rev 01)
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https://bugs.launchpad.net/bugs/1023514
Title:
[HDA-Intel - HDA ATI SB, playback] No sound at all
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