I have been working on creating a new RHEL 6.x image for a college computer lab. We use LDAP authentication so that the users can freely move between computers, and so that they can then connect to high-powered machines to create CAD drawings. I was working on getting this working under RHEL 6.3 (6.4 isn't supported by RGS 6.0). I have tried changing permissions, and adding the audio group to the LDAP group, and vice a versa. Has anyone successfully implemented a Red Hat (family) system with RGS 6.0 with functioning audio?
After working on it, I updated the kernel (not as part of the fix for this problem, but just to patch the security flaw in the older Linux kernels) and I manually compiled the Audio driver in conjunction with the new kernel and it worked.
My guess, (and it really is just a guess, but its a guess about a good solution) is that there was a part of the old audio driver that wasn't getting deleted from the kernel modules, and thus when I would install the new audio stuff, the old module wouldn't be compatible with the new information, and thus the audio stopped working.
I hope that this might be helpful to someone else later on.