Next-20150310 works OK, next-20150324 has the bug. Dell Latitude E6530 laptop, lspci tells me:
01:00.1 Audio device: NVIDIA Corporation GF108 High Definition Audio Controller
(rev a1)
Subsystem: Dell Device 0535
...
Kernel driver in use: snd_hda_intel
Symptoms: Audio works perfectly at boot, and for some amount
of time after. But somewhere around 6-8 hours of uptime, it gets
into a strange state where I'll get no audio... and then it will
cut in for all of 2 seconds or so (fairly consistent, that part),
and then cut back out for anywhere from 10 seconds to a minute,
then another 2 seconds of sound.. lather rinse repeat.
Before I start the thankless task of bisecting this (which means I'll
be able to do only 1, *maybe* 2 steps a day), does this ring any bells?
pgpMowQZ8TQrd.pgp
Description: PGP signature

