Sound gone from yum upgrade from F17->F18

[Ranjan Maitra]

Hello,

I did an upgrade using:

http://fedoraproject.org/wiki/Upgrading_Fedora_using_yum#Fedora_17_-.3E_Fedora_18

and it was generally smooth and successful, which generally made me
ecstatic, until the two issues (from what I can tell up to now) came up:


1. Sound is gone. I have looked around all over, but am
unable to figure out what the problem is. 

2. SELinux: My SELinux claims it is disabled. Here is what happens when
I try to change it:

$sudo setenforce 1
[sudo] password for: 
setenforce: SELinux is disabled


There are a couple of minor issues, but I think these major ones are
most important to me at this point.

Any help/suggestions?

Many thanks and best wishes,
Ranjan



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