Still getting this, EVEN with pulseaudio 9.15 from Luke's PPA

[New Thread 0x7f2a567f9950 (LWP 817)]
[New Thread 0x7f2a54ff6950 (LWP 818)]
[New Thread 0x7f2a55ff8950 (LWP 819)]
[New Thread 0x7f2a61c4c950 (LWP 821)]
[New Thread 0x7f2a56ffa950 (LWP 820)]
E: mainloop.c: ERROR: cannot create wakeup pipe
**
ERROR:pulsemixerctrl.c:215:gst_pulsemixer_ctrl_open: assertion failed: (c->mainloop)

Program received signal SIGABRT, Aborted.
[Switching to Thread 0x7f2a55ff8950 (LWP 819)]
0x00007f2a8669bfa5 in raise () from /lib/libc.so.6
(gdb) bt full
#0  0x00007f2a8669bfa5 in raise () from /lib/libc.so.6
No symbol table info available.
#1  0x00007f2a8669dbb3 in abort () from /lib/libc.so.6
No symbol table info available.
#2  0x00007f2a86edc763 in g_assertion_message () from /usr/lib/libglib-2.0.so.0
No symbol table info available.
#3  0x00007f2a86edccf2 in g_assertion_message_expr () from /usr/lib/libglib-2.0.so.0
No symbol table info available.
#4  0x00007f2a62e0b4b1 in ?? () from /usr/lib/gstreamer-0.10/libgstpulse.so
No symbol table info available.
#5  0x00007f2a62e0e9f8 in ?? () from /usr/lib/gstreamer-0.10/libgstpulse.so
No symbol table info available.
#6  0x00007f2a899dc1cc in gst_element_change_state () from /usr/lib/libgstreamer-0.10.so.0
No symbol table info available.
#7  0x00007f2a899dee7e in ?? () from /usr/lib/libgstreamer-0.10.so.0
No symbol table info available.
#8  0x00007f2a6312bd15 in ?? () from /usr/lib/gstreamer-0.10/libgstautodetect.so
No symbol table info available.
#9  0x00007f2a899dc1cc in gst_element_change_state () from /usr/lib/libgstreamer-0.10.so.0
No symbol table info available.
#10 0x00007f2a899dee7e in ?? () from /usr/lib/libgstreamer-0.10.so.0
No symbol table info available.
#11 0x00007f2a899cdfe1 in ?? () from /usr/lib/libgstreamer-0.10.so.0
No symbol table info available.
#12 0x00007f2a899dc1cc in gst_element_change_state () from /usr/lib/libgstreamer-0.10.so.0
No symbol table info available.
#13 0x00007f2a899dee7e in ?? () from /usr/lib/libgstreamer-0.10.so.0
No symbol table info available.
#14 0x00007f2a65d45cb3 in ?? () from /usr/lib/gstreamer-0.10/libgstgconfelements.so
---Type <return> to continue, or q <return> to quit---
No symbol table info available.
#15 0x00007f2a65d435b7 in ?? () from /usr/lib/gstreamer-0.10/libgstgconfelements.so
No symbol table info available.
#16 0x00007f2a65d43878 in ?? () from /usr/lib/gstreamer-0.10/libgstgconfelements.so
No symbol table info available.
#17 0x00007f2a899dc1cc in gst_element_change_state () from /usr/lib/libgstreamer-0.10.so.0
No symbol table info available.
#18 0x00007f2a899dee7e in ?? () from /usr/lib/libgstreamer-0.10.so.0
No symbol table info available.
#19 0x00007f2a899cdfe1 in ?? () from /usr/lib/libgstreamer-0.10.so.0
No symbol table info available.
#20 0x00007f2a899dc1cc in gst_element_change_state () from /usr/lib/libgstreamer-0.10.so.0
No symbol table info available.
#21 0x00007f2a899dee7e in ?? () from /usr/lib/libgstreamer-0.10.so.0
No symbol table info available.
#22 0x00007f2a65698dad in ?? () from /usr/lib/gstreamer-0.10/libgstplaybin.so
No symbol table info available.
#23 0x00007f2a6569a7c2 in ?? () from /usr/lib/gstreamer-0.10/libgstplaybin.so
No symbol table info available.
#24 0x00007f2a656a8aaf in ?? () from /usr/lib/gstreamer-0.10/libgstplaybin.so
No symbol table info available.
#25 0x00007f2a873542cd in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#26 0x00007f2a8736b0b0 in ?? () from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#27 0x00007f2a8736c7a9 in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#28 0x00007f2a8736cd13 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
---Type <return> to continue, or q <return> to quit---
#29 0x00007f2a873542cd in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#30 0x00007f2a8736b0b0 in ?? () from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#31 0x00007f2a8736c7a9 in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#32 0x00007f2a8736cd13 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#33 0x00007f2a64e5f154 in ?? () from /usr/lib/gstreamer-0.10/libgstwavparse.so
No symbol table info available.
#34 0x00007f2a64e5f4d1 in ?? () from /usr/lib/gstreamer-0.10/libgstwavparse.so
No symbol table info available.
#35 0x00007f2a64e634b2 in ?? () from /usr/lib/gstreamer-0.10/libgstwavparse.so
No symbol table info available.
#36 0x00007f2a89a14d86 in ?? () from /usr/lib/libgstreamer-0.10.so.0
No symbol table info available.
#37 0x00007f2a86ee1317 in ?? () from /usr/lib/libglib-2.0.so.0
No symbol table info available.
#38 0x00007f2a86edfd84 in ?? () from /usr/lib/libglib-2.0.so.0
No symbol table info available.
#39 0x00007f2a869e23ba in start_thread () from /lib/libpthread.so.0
No symbol table info available.
#40 0x00007f2a8674f0ad in clone () from /lib/libc.so.6
No symbol table info available.
#41 0x0000000000000000 in ?? ()
No symbol table info available.
(gdb)