I have run the: alsamixer -c0 command
nothing is muted. 
did something change in the upgrade? I did not have to go to bios to set up my 
sound in the previous release.
Is there a harware incompatibility here?



________________________________
 From: Raymond <1207...@bugs.launchpad.net>
To: alcep...@yahoo.com 
Sent: Wednesday, August 7, 2013 3:57 AM
Subject: [Bug 1207364] Re: no sound since upgrade to 13.04 [System Product      
Name, Realtek ALC892, Green Line Out, Rear] No sound at all
 

you have plugged the speaker into the green jack at rear panel  since
the value of Line Out Front Jack is true

    control.38 {
        iface CARD
        name 'Line Out Front Jack'
        value true
        comment {
            access read
            type BOOLEAN
            count 1
        }
    }

All desktop  with hda codec should be supported except some mothboard
with alc880 does not set the pin default

if your computer chassis have HDA Front audio panel (with pin 4
connected) , you need to setup the front audio panel type to HDA in BIOS
setup

please run alsamixer -c0  to check whether  the playback switch is not
muted and unmuted frequently


it is not clear that  module-switch-on-port-available switch to which port when 
availabilty of line out jack and headout jack are unknown

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https://bugs.launchpad.net/bugs/1207364

Title:
  no sound since upgrade to 13.04 [System Product Name, Realtek ALC892,
  Green Line Out, Rear] No sound at all

To manage notifications about this bug go to:
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Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1207364

Title:
  no sound since upgrade to 13.04 [System Product Name, Realtek ALC892,
  Green Line Out, Rear] No sound at all

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