No audio still with kernel that was linked above (3.19rc5). The behavior in dmesg output does change a bit though.
$ dmesg -t | egrep "(audio|snd|INT3438)"
dmar: ACPI device "INT3438:00" under DMAR at fed91000 as 00:13.0 snd_hda_intel 0000:00:03.0: enabling device (0000 -> 0002) sst-acpi INT3438:00: DesignWare DMA Controller, 8 channels haswell-pcm-audio haswell-pcm-audio: FW loaded, mailbox readback FW info: type 01, - version: 00.00, build 68, source commit id: 445e02b38dd3ac603ab1ffdc4785fbe589bfde31 broadwell-audio broadwell-audio: ASoC: CODEC DAI rt286-aif1 not registered platform broadwell-audio: Driver broadwell-audio requests probe deferral broadwell-audio broadwell-audio: ASoC: CODEC DAI rt286-aif1 not registered platform broadwell-audio: Driver broadwell-audio requests probe deferral
No audio still with kernel that was linked above (3.19rc5). The behavior in dmesg output does change a bit though.
$ dmesg -t | egrep "(audio| snd|INT3438) "
dmar: ACPI device "INT3438:00" under DMAR at fed91000 as 00:13.0 03ab1ffdc4785fb e589bfde31
snd_hda_intel 0000:00:03.0: enabling device (0000 -> 0002)
sst-acpi INT3438:00: DesignWare DMA Controller, 8 channels
haswell-pcm-audio haswell-pcm-audio: FW loaded, mailbox readback FW info: type 01, - version: 00.00, build 68, source commit id: 445e02b38dd3ac6
broadwell-audio broadwell-audio: ASoC: CODEC DAI rt286-aif1 not registered
platform broadwell-audio: Driver broadwell-audio requests probe deferral
broadwell-audio broadwell-audio: ASoC: CODEC DAI rt286-aif1 not registered
platform broadwell-audio: Driver broadwell-audio requests probe deferral