At Sat, 10 May 2014 11:17:45 +0200, Knut Petersen wrote:

S3 suspend / resume cycle works on kernels up to 3.14.x as expected. With kernels 3.15.0-rc2 it's necessary to reload the alsa modules as sound stays silent otherwise.

Hardware: AOpen i915GMm-hfs mobo, hda intel sound with realtek codec.

00:1b.0 Audio device: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) High Definition Audio Controller (rev 04) Subsystem: AOPEN Inc. Device 0560 Flags: bus master, fast devsel, latency 0, IRQ 46 Memory at d5440000 (64-bit, non-prefetchable) [size=16K] Capabilities: [50] Power Management version 2 Capabilities: [60] MSI: Enable+ Count=1/1 Maskable- 64bit+ Capabilities: [70] Express Root Complex Integrated Endpoint, MSI 00 Capabilities: [100] Virtual Channel Capabilities: [130] Root Complex Link Kernel driver in use: snd_hda_intel Kernel modules: snd_hda_intel

Is this regression known or should I bisect?

I don't know of any 3.15 bugs regarding HD-audio PM yet, so please bisect.

thanks,

Takashi