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The support for quadbuffer stereo that was added in RHEL-7.1 (see bug 861507) is not functional in RHEL-7.2; this is because the Mutter patch that was part of this was accidentally dropped in the RHEL-7.2 rebase of GNOME.

To fix this problem, we need to at a minimum: 
 
 Update mutter to include a rebased version of the patch - I've already done the rebase and tested that it works.
 Update clutter - the mutter patch doesn't compile without a small fix to clutter. When the stereo patch for clutter was rebased for RHEL-7.2, the newly added symbols to enable stereo were accidentally not exported from the library.

We may also want to update gnome-shell to pick up the fix for:

 https://bugzilla.gnome.org/show_bug.cgi?id=761566

Without that, the restart of GNOME Shell to enable stereo is not very smooth because maximized windows jump around.

*** Bug 1324686 has been marked as a duplicate of this bug. ***

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHBA-2016-2258.html