Comment 11 for bug 1525554

In case it helps, this is the kernel output for the workaround. sudo alsa force-reload with a few seconds in between. alsa 1.0.16.

[ 119.328947] snd_hda_intel 0000:00:1f.3: bound 0000:00:02.0 (ops i915_audio_component_bind_ops [i915])
[ 119.347243] snd_hda_intel 0000:00:1f.3: spurious response 0x0:0x2, last cmd=0x000000
[ 122.364838] snd_hda_intel 0000:00:1f.3: azx_get_response timeout, switching to polling mode: last cmd=0x000f0000
[ 123.368786] snd_hda_intel 0000:00:1f.3: No response from codec, disabling MSI: last cmd=0x000f0000
[ 124.376551] snd_hda_intel 0000:00:1f.3: Codec #0 probe error; disabling it...
[ 124.381407] hdaudio hdaudioC0D2: no AFG or MFG node found
[ 124.381442] snd_hda_intel 0000:00:1f.3: no codecs initialized
[ 129.165830] snd_hda_intel 0000:00:1f.3: bound 0000:00:02.0 (ops i915_audio_component_bind_ops [i915])
[ 129.182844] snd_hda_intel 0000:00:1f.3: spurious response 0x80862809:0x2, last cmd=0x000000
[ 132.202786] snd_hda_intel 0000:00:1f.3: azx_get_response timeout, switching to polling mode: last cmd=0x000f0000
[ 133.210682] snd_hda_intel 0000:00:1f.3: No response from codec, disabling MSI: last cmd=0x000f0000
[ 134.218589] snd_hda_intel 0000:00:1f.3: Codec #0 probe error; disabling it...
[ 134.223454] snd_hda_intel 0000:00:1f.3: spurious response 0x14f150f4:0x0, last cmd=0x0f0000
[ 135.230455] snd_hda_intel 0000:00:1f.3: azx_get_response timeout, switching to single_cmd mode: last cmd=0x200f0004
[ 135.230480] hdaudio hdaudioC0D2: no AFG or MFG node found
[ 135.230495] snd_hda_intel 0000:00:1f.3: no codecs initialized
[ 138.975719] snd_hda_intel 0000:00:1f.3: bound 0000:00:02.0 (ops i915_audio_component_bind_ops [i915])
[ 138.991803] snd_hda_intel 0000:00:1f.3: spurious response 0x80862809:0x2, last cmd=0x000000
[ 142.005673] snd_hda_intel 0000:00:1f.3: azx_get_response timeout, switching to polling mode: last cmd=0x000f0000
[ 143.013540] snd_hda_intel 0000:00:1f.3: No response from codec, disabling MSI: last cmd=0x000f0000
[ 144.021411] snd_hda_intel 0000:00:1f.3: Codec #0 probe error; disabling it...
[ 144.026201] snd_hda_intel 0000:00:1f.3: spurious response 0x14f150f4:0x0, last cmd=0x0f0000
[ 145.033315] snd_hda_intel 0000:00:1f.3: azx_get_response timeout, switching to single_cmd mode: last cmd=0x200f0004
[ 145.033335] hdaudio hdaudioC0D2: no AFG or MFG node found
[ 145.033347] snd_hda_intel 0000:00:1f.3: no codecs initialized
[ 154.940302] snd_hda_intel 0000:00:1f.3: bound 0000:00:02.0 (ops i915_audio_component_bind_ops [i915])
[ 154.964152] snd_hda_codec_conexant hdaudioC0D0: CX20724: BIOS auto-probing.
[ 154.964672] snd_hda_codec_conexant hdaudioC0D0: autoconfig for CX20724: line_outs=1 (0x17/0x0/0x0/0x0/0x0) type:speaker
[ 154.964673] snd_hda_codec_conexant hdaudioC0D0: speaker_outs=0 (0x0/0x0/0x0/0x0/0x0)
[ 154.964675] snd_hda_codec_conexant hdaudioC0D0: hp_outs=1 (0x16/0x0/0x0/0x0/0x0)
[ 154.964676] snd_hda_codec_conexant hdaudioC0D0: mono: mono_out=0x0
[ 154.964678] snd_hda_codec_conexant hdaudioC0D0: inputs:
[ 154.964680] snd_hda_codec_conexant hdaudioC0D0: Internal Mic=0x1a
[ 154.964681] snd_hda_codec_conexant hdaudioC0D0: Mic=0x19
[ 154.965633] snd_hda_codec_conexant hdaudioC0D0: Enable sync_write for stable communication
[ 154.972198] input: HDA Intel PCH Mic as /devices/pci0000:00/0000:00:1f.3/sound/card0/input22
[ 154.972252] input: HDA Intel PCH Headphone as /devices/pci0000:00/0000:00:1f.3/sound/card0/input23
[ 154.972299] input: HDA Intel PCH HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input24
[ 154.972342] input: HDA Intel PCH HDMI/DP,pcm=7 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input25
[ 154.972389] input: HDA Intel PCH HDMI/DP,pcm=8 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input26