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Description of problem:
sound device model listed in virt-manager user-mode GUI should keep consistent with root mode

Version-Release number of selected component (if applicable):
libvirt-1.2.17-3.el7.x86_64
libvirt-python-1.2.17-2.el7.x86_64
virt-manager-1.2.1-4.el7.noarch


How reproducible:
100%

Steps to Reproduce:
1. Login in host with non-root user, then launch virt-manager in user mode:
$ virt-manager -c qemu:///session

2. Add a local "QEMU/KVM" connection: Click File-->Add Connection-->Hyperviso choose "QEMU/KVM", others as default, click "Connect".
   After input root password, connection added.

3. Prepare some guest installed in User mode and Root mode:
eg: Guest in user mode called: rhel6.7-released
    Guest in root mode called: ovmf

4. Change sound device model or add a new sound to guest.

Actual results:
After step4: in user mode, sound model list is: ac97, es1370, ich6, ich9, pcspk, sb16
but in root mode， sound model list is: ac97, ich6, ich9

Expected results:
sound device model listed in virt-manager user-mode GUI should keep consistent with root-mode

Additional info:

Closing as duplicate, the bug doesn't seems to be relevant, but the root cause is the same.

*** This bug has been marked as a duplicate of bug 1258691 ***