LinuxQuestions.org - [SOLVED] no sound

Hello. I am not getting sound for some reason. I was, but after the last update, it seems to have stopped.

Code:

mark@mark-OptiPlex-755:~$ grep "Codec:" /proc/asound/card*/codec*

Codec: Analog Devices AD1984

Code:

mark@mark-OptiPlex-755:~$ aplay /usr/share/sounds/alsa/Front_Center.wav

Playing WAVE '/usr/share/sounds/alsa/Front_Center.wav' : Signed 16 bit Little Endian, Rate 48000 Hz, Mono

mark@mark-OptiPlex-755:~$ sudo aplay /usr/share/sounds/alsa/Front_Center.wav

[sudo] password for mark: 

Playing WAVE '/usr/share/sounds/alsa/Front_Center.wav' : Signed 16 bit Little Endian, Rate 48000 Hz, Mono

Hear nothing whether it's sudo or not. See above.

Seems to recognize the sound card:

Code:

 

mark@mark-OptiPlex-755:~$ sudo aplay -l

**** List of PLAYBACK Hardware Devices ****

card 0: Intel [HDA Intel], device 0: AD1984 Analog [AD1984 Analog]

  Subdevices: 1/1

  Subdevice #0: subdevice #0

card 0: Intel [HDA Intel], device 2: AD1984 Alt Analog [AD1984 Alt Analog]

  Subdevices: 1/1

  Subdevice #0: subdevice #0

mark@mark-OptiPlex-755:~$

Code:

k@mark-OptiPlex-755:~$ lspci -v | grep -A7 -i "audio"

00:1b.0 Audio device: Intel Corporation 82801I (ICH9 Family) HD Audio Controller (rev 02)

        Subsystem: Dell Optiplex 755

        Flags: bus master, fast devsel, latency 0, IRQ 45

        Memory at fe9dc000 (64-bit, non-prefetchable) [size=16K]

        Capabilities: <access denied>

        Kernel driver in use: snd_hda_intel



00:1c.0 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 1 (rev 02) (prog-if 00 [Normal decode])

mark@mark-OptiPlex-755:~$

I'm using xfce and have the audio mixer plugin within the panel. Even though it says it's not mute, when I change the volume it does show a graph with a red ex (see attachment). So, something somewhere seems off.