Reported to hang boot on a DELL Optiplex 755 with:
00:1b.0 Audio device: Intel Corporation 82801I (ICH9 Family) HD Audio Controller (rev 02)
Subsystem: Dell Optiplex 755
Codec: Analog Devices AD1984
Address: 0
AFG Function Id: 0x1 (unsol 0)
Vendor Id: 0x11d41984
Subsystem Id: 0x10280211
Revision Id: 0x100400
A recent patch to libalsa should be the upstream solution to the KWin crash problem this patch was intended to fix.
This reverts commit 30e0db1d2c.